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-rw-r--r--drivers/usb/core/Makefile2
-rw-r--r--drivers/usb/core/buffer.c18
-rw-r--r--drivers/usb/core/config.c37
-rw-r--r--drivers/usb/core/devices.c26
-rw-r--r--drivers/usb/core/devio.c301
-rw-r--r--drivers/usb/core/driver.c40
-rw-r--r--drivers/usb/core/file.c9
-rw-r--r--drivers/usb/core/hcd-pci.c3
-rw-r--r--drivers/usb/core/hcd.c129
-rw-r--r--drivers/usb/core/hub.c114
-rw-r--r--drivers/usb/core/hub.h7
-rw-r--r--drivers/usb/core/of.c47
-rw-r--r--drivers/usb/core/sysfs.c68
-rw-r--r--drivers/usb/core/urb.c3
-rw-r--r--drivers/usb/core/usb.c16
-rw-r--r--drivers/usb/core/usb.h2
16 files changed, 637 insertions, 185 deletions
diff --git a/drivers/usb/core/Makefile b/drivers/usb/core/Makefile
index 2f6f93220..978087701 100644
--- a/drivers/usb/core/Makefile
+++ b/drivers/usb/core/Makefile
@@ -5,7 +5,7 @@
usbcore-y := usb.o hub.o hcd.o urb.o message.o driver.o
usbcore-y += config.o file.o buffer.o sysfs.o endpoint.o
usbcore-y += devio.o notify.o generic.o quirks.o devices.o
-usbcore-y += port.o
+usbcore-y += port.o of.o
usbcore-$(CONFIG_PCI) += hcd-pci.o
usbcore-$(CONFIG_ACPI) += usb-acpi.o
diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c
index 89f2e7765..2741566ee 100644
--- a/drivers/usb/core/buffer.c
+++ b/drivers/usb/core/buffer.c
@@ -62,8 +62,9 @@ int hcd_buffer_create(struct usb_hcd *hcd)
char name[16];
int i, size;
- if (!hcd->self.controller->dma_mask &&
- !(hcd->driver->flags & HCD_LOCAL_MEM))
+ if (!IS_ENABLED(CONFIG_HAS_DMA) ||
+ (!hcd->self.controller->dma_mask &&
+ !(hcd->driver->flags & HCD_LOCAL_MEM)))
return 0;
for (i = 0; i < HCD_BUFFER_POOLS; i++) {
@@ -93,6 +94,9 @@ void hcd_buffer_destroy(struct usb_hcd *hcd)
{
int i;
+ if (!IS_ENABLED(CONFIG_HAS_DMA))
+ return;
+
for (i = 0; i < HCD_BUFFER_POOLS; i++) {
struct dma_pool *pool = hcd->pool[i];
@@ -119,8 +123,9 @@ void *hcd_buffer_alloc(
int i;
/* some USB hosts just use PIO */
- if (!bus->controller->dma_mask &&
- !(hcd->driver->flags & HCD_LOCAL_MEM)) {
+ if (!IS_ENABLED(CONFIG_HAS_DMA) ||
+ (!bus->controller->dma_mask &&
+ !(hcd->driver->flags & HCD_LOCAL_MEM))) {
*dma = ~(dma_addr_t) 0;
return kmalloc(size, mem_flags);
}
@@ -145,8 +150,9 @@ void hcd_buffer_free(
if (!addr)
return;
- if (!bus->controller->dma_mask &&
- !(hcd->driver->flags & HCD_LOCAL_MEM)) {
+ if (!IS_ENABLED(CONFIG_HAS_DMA) ||
+ (!bus->controller->dma_mask &&
+ !(hcd->driver->flags & HCD_LOCAL_MEM))) {
kfree(addr);
return;
}
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 5050760f5..31ccdccd7 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -43,6 +43,27 @@ static int find_next_descriptor(unsigned char *buffer, int size,
return buffer - buffer0;
}
+static void usb_parse_ssp_isoc_endpoint_companion(struct device *ddev,
+ int cfgno, int inum, int asnum, struct usb_host_endpoint *ep,
+ unsigned char *buffer, int size)
+{
+ struct usb_ssp_isoc_ep_comp_descriptor *desc;
+
+ /*
+ * The SuperSpeedPlus Isoc endpoint companion descriptor immediately
+ * follows the SuperSpeed Endpoint Companion descriptor
+ */
+ desc = (struct usb_ssp_isoc_ep_comp_descriptor *) buffer;
+ if (desc->bDescriptorType != USB_DT_SSP_ISOC_ENDPOINT_COMP ||
+ size < USB_DT_SSP_ISOC_EP_COMP_SIZE) {
+ dev_warn(ddev, "Invalid SuperSpeedPlus isoc endpoint companion"
+ "for config %d interface %d altsetting %d ep %d.\n",
+ cfgno, inum, asnum, ep->desc.bEndpointAddress);
+ return;
+ }
+ memcpy(&ep->ssp_isoc_ep_comp, desc, USB_DT_SSP_ISOC_EP_COMP_SIZE);
+}
+
static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
int inum, int asnum, struct usb_host_endpoint *ep,
unsigned char *buffer, int size)
@@ -54,6 +75,7 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
* be the first thing immediately following the endpoint descriptor.
*/
desc = (struct usb_ss_ep_comp_descriptor *) buffer;
+
if (desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP ||
size < USB_DT_SS_EP_COMP_SIZE) {
dev_warn(ddev, "No SuperSpeed endpoint companion for config %d "
@@ -76,7 +98,8 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
ep->desc.wMaxPacketSize;
return;
}
-
+ buffer += desc->bLength;
+ size -= desc->bLength;
memcpy(&ep->ss_ep_comp, desc, USB_DT_SS_EP_COMP_SIZE);
/* Check the various values */
@@ -112,6 +135,7 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
cfgno, inum, asnum, ep->desc.bEndpointAddress);
ep->ss_ep_comp.bmAttributes = 16;
} else if (usb_endpoint_xfer_isoc(&ep->desc) &&
+ !USB_SS_SSP_ISOC_COMP(desc->bmAttributes) &&
USB_SS_MULT(desc->bmAttributes) > 3) {
dev_warn(ddev, "Isoc endpoint has Mult of %d in "
"config %d interface %d altsetting %d ep %d: "
@@ -140,6 +164,11 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
max_tx);
ep->ss_ep_comp.wBytesPerInterval = cpu_to_le16(max_tx);
}
+ /* Parse a possible SuperSpeedPlus isoc ep companion descriptor */
+ if (usb_endpoint_xfer_isoc(&ep->desc) &&
+ USB_SS_SSP_ISOC_COMP(desc->bmAttributes))
+ usb_parse_ssp_isoc_endpoint_companion(ddev, cfgno, inum, asnum,
+ ep, buffer, size);
}
static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
@@ -191,6 +220,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
if (usb_endpoint_xfer_int(d)) {
i = 1;
switch (to_usb_device(ddev)->speed) {
+ case USB_SPEED_SUPER_PLUS:
case USB_SPEED_SUPER:
case USB_SPEED_HIGH:
/* Many device manufacturers are using full-speed
@@ -274,7 +304,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
}
/* Parse a possible SuperSpeed endpoint companion descriptor */
- if (to_usb_device(ddev)->speed == USB_SPEED_SUPER)
+ if (to_usb_device(ddev)->speed >= USB_SPEED_SUPER)
usb_parse_ss_endpoint_companion(ddev, cfgno,
inum, asnum, endpoint, buffer, size);
@@ -862,6 +892,9 @@ int usb_get_bos_descriptor(struct usb_device *dev)
dev->bos->ss_id =
(struct usb_ss_container_id_descriptor *)buffer;
break;
+ case USB_PTM_CAP_TYPE:
+ dev->bos->ptm_cap =
+ (struct usb_ptm_cap_descriptor *)buffer;
default:
break;
}
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index cffa0a0d7..ef04b50e6 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -110,13 +110,6 @@ static const char format_endpt[] =
/* E: Ad=xx(s) Atr=xx(ssss) MxPS=dddd Ivl=D?s */
"E: Ad=%02x(%c) Atr=%02x(%-4s) MxPS=%4d Ivl=%d%cs\n";
-
-/*
- * Need access to the driver and USB bus lists.
- * extern struct list_head usb_bus_list;
- * However, these will come from functions that return ptrs to each of them.
- */
-
/*
* Wait for an connect/disconnect event to happen. We initialize
* the event counter with an odd number, and each event will increment
@@ -221,7 +214,7 @@ static char *usb_dump_endpoint_descriptor(int speed, char *start, char *end,
break;
case USB_ENDPOINT_XFER_INT:
type = "Int.";
- if (speed == USB_SPEED_HIGH || speed == USB_SPEED_SUPER)
+ if (speed == USB_SPEED_HIGH || speed >= USB_SPEED_SUPER)
interval = 1 << (desc->bInterval - 1);
else
interval = desc->bInterval;
@@ -230,7 +223,7 @@ static char *usb_dump_endpoint_descriptor(int speed, char *start, char *end,
return start;
}
interval *= (speed == USB_SPEED_HIGH ||
- speed == USB_SPEED_SUPER) ? 125 : 1000;
+ speed >= USB_SPEED_SUPER) ? 125 : 1000;
if (interval % 1000)
unit = 'u';
else {
@@ -322,7 +315,7 @@ static char *usb_dump_config_descriptor(char *start, char *end,
if (start > end)
return start;
- if (speed == USB_SPEED_SUPER)
+ if (speed >= USB_SPEED_SUPER)
mul = 8;
else
mul = 2;
@@ -534,6 +527,8 @@ static ssize_t usb_device_dump(char __user **buffer, size_t *nbytes,
speed = "480"; break;
case USB_SPEED_SUPER:
speed = "5000"; break;
+ case USB_SPEED_SUPER_PLUS:
+ speed = "10000"; break;
default:
speed = "??";
}
@@ -553,7 +548,7 @@ static ssize_t usb_device_dump(char __user **buffer, size_t *nbytes,
/* super/high speed reserves 80%, full/low reserves 90% */
if (usbdev->speed == USB_SPEED_HIGH ||
- usbdev->speed == USB_SPEED_SUPER)
+ usbdev->speed >= USB_SPEED_SUPER)
max = 800;
else
max = FRAME_TIME_MAX_USECS_ALLOC;
@@ -616,6 +611,7 @@ static ssize_t usb_device_read(struct file *file, char __user *buf,
struct usb_bus *bus;
ssize_t ret, total_written = 0;
loff_t skip_bytes = *ppos;
+ int id;
if (*ppos < 0)
return -EINVAL;
@@ -624,9 +620,9 @@ static ssize_t usb_device_read(struct file *file, char __user *buf,
if (!access_ok(VERIFY_WRITE, buf, nbytes))
return -EFAULT;
- mutex_lock(&usb_bus_list_lock);
+ mutex_lock(&usb_bus_idr_lock);
/* print devices for all busses */
- list_for_each_entry(bus, &usb_bus_list, bus_list) {
+ idr_for_each_entry(&usb_bus_idr, bus, id) {
/* recurse through all children of the root hub */
if (!bus_to_hcd(bus)->rh_registered)
continue;
@@ -635,12 +631,12 @@ static ssize_t usb_device_read(struct file *file, char __user *buf,
bus->root_hub, bus, 0, 0, 0);
usb_unlock_device(bus->root_hub);
if (ret < 0) {
- mutex_unlock(&usb_bus_list_lock);
+ mutex_unlock(&usb_bus_idr_lock);
return ret;
}
total_written += ret;
}
- mutex_unlock(&usb_bus_list_lock);
+ mutex_unlock(&usb_bus_idr_lock);
return total_written;
}
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 59e7a3369..52c4461df 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -50,6 +50,7 @@
#include <linux/user_namespace.h>
#include <linux/scatterlist.h>
#include <linux/uaccess.h>
+#include <linux/dma-mapping.h>
#include <asm/byteorder.h>
#include <linux/moduleparam.h>
@@ -69,6 +70,7 @@ struct usb_dev_state {
spinlock_t lock; /* protects the async urb lists */
struct list_head async_pending;
struct list_head async_completed;
+ struct list_head memory_list;
wait_queue_head_t wait; /* wake up if a request completed */
unsigned int discsignr;
struct pid *disc_pid;
@@ -77,6 +79,19 @@ struct usb_dev_state {
unsigned long ifclaimed;
u32 secid;
u32 disabled_bulk_eps;
+ bool privileges_dropped;
+ unsigned long interface_allowed_mask;
+};
+
+struct usb_memory {
+ struct list_head memlist;
+ int vma_use_count;
+ int urb_use_count;
+ u32 size;
+ void *mem;
+ dma_addr_t dma_handle;
+ unsigned long vm_start;
+ struct usb_dev_state *ps;
};
struct async {
@@ -89,6 +104,7 @@ struct async {
void __user *userbuffer;
void __user *userurb;
struct urb *urb;
+ struct usb_memory *usbm;
unsigned int mem_usage;
int status;
u32 secid;
@@ -162,6 +178,111 @@ static int connected(struct usb_dev_state *ps)
ps->dev->state != USB_STATE_NOTATTACHED);
}
+static void dec_usb_memory_use_count(struct usb_memory *usbm, int *count)
+{
+ struct usb_dev_state *ps = usbm->ps;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ps->lock, flags);
+ --*count;
+ if (usbm->urb_use_count == 0 && usbm->vma_use_count == 0) {
+ list_del(&usbm->memlist);
+ spin_unlock_irqrestore(&ps->lock, flags);
+
+ usb_free_coherent(ps->dev, usbm->size, usbm->mem,
+ usbm->dma_handle);
+ usbfs_decrease_memory_usage(
+ usbm->size + sizeof(struct usb_memory));
+ kfree(usbm);
+ } else {
+ spin_unlock_irqrestore(&ps->lock, flags);
+ }
+}
+
+static void usbdev_vm_open(struct vm_area_struct *vma)
+{
+ struct usb_memory *usbm = vma->vm_private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&usbm->ps->lock, flags);
+ ++usbm->vma_use_count;
+ spin_unlock_irqrestore(&usbm->ps->lock, flags);
+}
+
+static void usbdev_vm_close(struct vm_area_struct *vma)
+{
+ struct usb_memory *usbm = vma->vm_private_data;
+
+ dec_usb_memory_use_count(usbm, &usbm->vma_use_count);
+}
+
+struct vm_operations_struct usbdev_vm_ops = {
+ .open = usbdev_vm_open,
+ .close = usbdev_vm_close
+};
+
+static int usbdev_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct usb_memory *usbm = NULL;
+ struct usb_dev_state *ps = file->private_data;
+ size_t size = vma->vm_end - vma->vm_start;
+ void *mem;
+ unsigned long flags;
+ dma_addr_t dma_handle;
+ int ret;
+
+ ret = usbfs_increase_memory_usage(size + sizeof(struct usb_memory));
+ if (ret)
+ goto error;
+
+ usbm = kzalloc(sizeof(struct usb_memory), GFP_KERNEL);
+ if (!usbm) {
+ ret = -ENOMEM;
+ goto error_decrease_mem;
+ }
+
+ mem = usb_alloc_coherent(ps->dev, size, GFP_USER, &dma_handle);
+ if (!mem) {
+ ret = -ENOMEM;
+ goto error_free_usbm;
+ }
+
+ memset(mem, 0, size);
+
+ usbm->mem = mem;
+ usbm->dma_handle = dma_handle;
+ usbm->size = size;
+ usbm->ps = ps;
+ usbm->vm_start = vma->vm_start;
+ usbm->vma_use_count = 1;
+ INIT_LIST_HEAD(&usbm->memlist);
+
+ if (remap_pfn_range(vma, vma->vm_start,
+ virt_to_phys(usbm->mem) >> PAGE_SHIFT,
+ size, vma->vm_page_prot) < 0) {
+ dec_usb_memory_use_count(usbm, &usbm->vma_use_count);
+ return -EAGAIN;
+ }
+
+ vma->vm_flags |= VM_IO;
+ vma->vm_flags |= (VM_DONTEXPAND | VM_DONTDUMP);
+ vma->vm_ops = &usbdev_vm_ops;
+ vma->vm_private_data = usbm;
+
+ spin_lock_irqsave(&ps->lock, flags);
+ list_add_tail(&usbm->memlist, &ps->memory_list);
+ spin_unlock_irqrestore(&ps->lock, flags);
+
+ return 0;
+
+error_free_usbm:
+ kfree(usbm);
+error_decrease_mem:
+ usbfs_decrease_memory_usage(size + sizeof(struct usb_memory));
+error:
+ return ret;
+}
+
static ssize_t usbdev_read(struct file *file, char __user *buf, size_t nbytes,
loff_t *ppos)
{
@@ -278,8 +399,13 @@ static void free_async(struct async *as)
if (sg_page(&as->urb->sg[i]))
kfree(sg_virt(&as->urb->sg[i]));
}
+
kfree(as->urb->sg);
- kfree(as->urb->transfer_buffer);
+ if (as->usbm == NULL)
+ kfree(as->urb->transfer_buffer);
+ else
+ dec_usb_memory_use_count(as->usbm, &as->usbm->urb_use_count);
+
kfree(as->urb->setup_packet);
usb_free_urb(as->urb);
usbfs_decrease_memory_usage(as->mem_usage);
@@ -624,6 +750,10 @@ static int claimintf(struct usb_dev_state *ps, unsigned int ifnum)
if (test_bit(ifnum, &ps->ifclaimed))
return 0;
+ if (ps->privileges_dropped &&
+ !test_bit(ifnum, &ps->interface_allowed_mask))
+ return -EACCES;
+
intf = usb_ifnum_to_if(dev, ifnum);
if (!intf)
err = -ENOENT;
@@ -848,7 +978,7 @@ static struct usb_device *usbdev_lookup_by_devt(dev_t devt)
(void *) (unsigned long) devt, match_devt);
if (!dev)
return NULL;
- return container_of(dev, struct usb_device, dev);
+ return to_usb_device(dev);
}
/*
@@ -861,7 +991,7 @@ static int usbdev_open(struct inode *inode, struct file *file)
int ret;
ret = -ENOMEM;
- ps = kmalloc(sizeof(struct usb_dev_state), GFP_KERNEL);
+ ps = kzalloc(sizeof(struct usb_dev_state), GFP_KERNEL);
if (!ps)
goto out_free_ps;
@@ -889,16 +1019,15 @@ static int usbdev_open(struct inode *inode, struct file *file)
ps->dev = dev;
ps->file = file;
+ ps->interface_allowed_mask = 0xFFFFFFFF; /* 32 bits */
spin_lock_init(&ps->lock);
INIT_LIST_HEAD(&ps->list);
INIT_LIST_HEAD(&ps->async_pending);
INIT_LIST_HEAD(&ps->async_completed);
+ INIT_LIST_HEAD(&ps->memory_list);
init_waitqueue_head(&ps->wait);
- ps->discsignr = 0;
ps->disc_pid = get_pid(task_pid(current));
ps->cred = get_current_cred();
- ps->disccontext = NULL;
- ps->ifclaimed = 0;
security_task_getsecid(current, &ps->secid);
smp_wmb();
list_add_tail(&ps->list, &dev->filelist);
@@ -945,6 +1074,7 @@ static int usbdev_release(struct inode *inode, struct file *file)
free_async(as);
as = async_getcompleted(ps);
}
+
kfree(ps);
return 0;
}
@@ -1198,6 +1328,28 @@ static int proc_connectinfo(struct usb_dev_state *ps, void __user *arg)
static int proc_resetdevice(struct usb_dev_state *ps)
{
+ struct usb_host_config *actconfig = ps->dev->actconfig;
+ struct usb_interface *interface;
+ int i, number;
+
+ /* Don't allow a device reset if the process has dropped the
+ * privilege to do such things and any of the interfaces are
+ * currently claimed.
+ */
+ if (ps->privileges_dropped && actconfig) {
+ for (i = 0; i < actconfig->desc.bNumInterfaces; ++i) {
+ interface = actconfig->interface[i];
+ number = interface->cur_altsetting->desc.bInterfaceNumber;
+ if (usb_interface_claimed(interface) &&
+ !test_bit(number, &ps->ifclaimed)) {
+ dev_warn(&ps->dev->dev,
+ "usbfs: interface %d claimed by %s while '%s' resets device\n",
+ number, interface->dev.driver->name, current->comm);
+ return -EACCES;
+ }
+ }
+ }
+
return usb_reset_device(ps->dev);
}
@@ -1266,6 +1418,31 @@ static int proc_setconfig(struct usb_dev_state *ps, void __user *arg)
return status;
}
+static struct usb_memory *
+find_memory_area(struct usb_dev_state *ps, const struct usbdevfs_urb *uurb)
+{
+ struct usb_memory *usbm = NULL, *iter;
+ unsigned long flags;
+ unsigned long uurb_start = (unsigned long)uurb->buffer;
+
+ spin_lock_irqsave(&ps->lock, flags);
+ list_for_each_entry(iter, &ps->memory_list, memlist) {
+ if (uurb_start >= iter->vm_start &&
+ uurb_start < iter->vm_start + iter->size) {
+ if (uurb->buffer_length > iter->vm_start + iter->size -
+ uurb_start) {
+ usbm = ERR_PTR(-EINVAL);
+ } else {
+ usbm = iter;
+ usbm->urb_use_count++;
+ }
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&ps->lock, flags);
+ return usbm;
+}
+
static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb,
struct usbdevfs_iso_packet_desc __user *iso_frame_desc,
void __user *arg)
@@ -1378,11 +1555,10 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb
number_of_packets = uurb->number_of_packets;
isofrmlen = sizeof(struct usbdevfs_iso_packet_desc) *
number_of_packets;
- isopkt = kmalloc(isofrmlen, GFP_KERNEL);
- if (!isopkt)
- return -ENOMEM;
- if (copy_from_user(isopkt, iso_frame_desc, isofrmlen)) {
- ret = -EFAULT;
+ isopkt = memdup_user(iso_frame_desc, isofrmlen);
+ if (IS_ERR(isopkt)) {
+ ret = PTR_ERR(isopkt);
+ isopkt = NULL;
goto error;
}
for (totlen = u = 0; u < number_of_packets; u++) {
@@ -1422,6 +1598,19 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb
goto error;
}
+ as->usbm = find_memory_area(ps, uurb);
+ if (IS_ERR(as->usbm)) {
+ ret = PTR_ERR(as->usbm);
+ as->usbm = NULL;
+ goto error;
+ }
+
+ /* do not use SG buffers when memory mapped segments
+ * are in use
+ */
+ if (as->usbm)
+ num_sgs = 0;
+
u += sizeof(struct async) + sizeof(struct urb) + uurb->buffer_length +
num_sgs * sizeof(struct scatterlist);
ret = usbfs_increase_memory_usage(u);
@@ -1459,29 +1648,35 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb
totlen -= u;
}
} else if (uurb->buffer_length > 0) {
- as->urb->transfer_buffer = kmalloc(uurb->buffer_length,
- GFP_KERNEL);
- if (!as->urb->transfer_buffer) {
- ret = -ENOMEM;
- goto error;
- }
+ if (as->usbm) {
+ unsigned long uurb_start = (unsigned long)uurb->buffer;
- if (!is_in) {
- if (copy_from_user(as->urb->transfer_buffer,
- uurb->buffer,
- uurb->buffer_length)) {
- ret = -EFAULT;
+ as->urb->transfer_buffer = as->usbm->mem +
+ (uurb_start - as->usbm->vm_start);
+ } else {
+ as->urb->transfer_buffer = kmalloc(uurb->buffer_length,
+ GFP_KERNEL);
+ if (!as->urb->transfer_buffer) {
+ ret = -ENOMEM;
goto error;
}
- } else if (uurb->type == USBDEVFS_URB_TYPE_ISO) {
- /*
- * Isochronous input data may end up being
- * discontiguous if some of the packets are short.
- * Clear the buffer so that the gaps don't leak
- * kernel data to userspace.
- */
- memset(as->urb->transfer_buffer, 0,
- uurb->buffer_length);
+ if (!is_in) {
+ if (copy_from_user(as->urb->transfer_buffer,
+ uurb->buffer,
+ uurb->buffer_length)) {
+ ret = -EFAULT;
+ goto error;
+ }
+ } else if (uurb->type == USBDEVFS_URB_TYPE_ISO) {
+ /*
+ * Isochronous input data may end up being
+ * discontiguous if some of the packets are
+ * short. Clear the buffer so that the gaps
+ * don't leak kernel data to userspace.
+ */
+ memset(as->urb->transfer_buffer, 0,
+ uurb->buffer_length);
+ }
}
}
as->urb->dev = ps->dev;
@@ -1528,10 +1723,14 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb
isopkt = NULL;
as->ps = ps;
as->userurb = arg;
- if (is_in && uurb->buffer_length > 0)
+ if (as->usbm) {
+ unsigned long uurb_start = (unsigned long)uurb->buffer;
+
+ as->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+ as->urb->transfer_dma = as->usbm->dma_handle +
+ (uurb_start - as->usbm->vm_start);
+ } else if (is_in && uurb->buffer_length > 0)
as->userbuffer = uurb->buffer;
- else
- as->userbuffer = NULL;
as->signr = uurb->signr;
as->ifnum = ifnum;
as->pid = get_pid(task_pid(current));
@@ -1587,6 +1786,8 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb
return 0;
error:
+ if (as && as->usbm)
+ dec_usb_memory_use_count(as->usbm, &as->usbm->urb_use_count);
kfree(isopkt);
kfree(dr);
if (as)
@@ -1903,7 +2104,7 @@ static int proc_releaseinterface(struct usb_dev_state *ps, void __user *arg)
ret = releaseintf(ps, ifnum);
if (ret < 0)
return ret;
- destroy_async_on_interface (ps, ifnum);
+ destroy_async_on_interface(ps, ifnum);
return 0;
}
@@ -1915,6 +2116,9 @@ static int proc_ioctl(struct usb_dev_state *ps, struct usbdevfs_ioctl *ctl)
struct usb_interface *intf = NULL;
struct usb_driver *driver = NULL;
+ if (ps->privileges_dropped)
+ return -EACCES;
+
/* alloc buffer */
size = _IOC_SIZE(ctl->ioctl_code);
if (size > 0) {
@@ -2040,7 +2244,8 @@ static int proc_get_capabilities(struct usb_dev_state *ps, void __user *arg)
__u32 caps;
caps = USBDEVFS_CAP_ZERO_PACKET | USBDEVFS_CAP_NO_PACKET_SIZE_LIM |
- USBDEVFS_CAP_REAP_AFTER_DISCONNECT;
+ USBDEVFS_CAP_REAP_AFTER_DISCONNECT | USBDEVFS_CAP_MMAP |
+ USBDEVFS_CAP_DROP_PRIVILEGES;
if (!ps->dev->bus->no_stop_on_short)
caps |= USBDEVFS_CAP_BULK_CONTINUATION;
if (ps->dev->bus->sg_tablesize)
@@ -2067,6 +2272,9 @@ static int proc_disconnect_claim(struct usb_dev_state *ps, void __user *arg)
if (intf->dev.driver) {
struct usb_driver *driver = to_usb_driver(intf->dev.driver);
+ if (ps->privileges_dropped)
+ return -EACCES;
+
if ((dc.flags & USBDEVFS_DISCONNECT_CLAIM_IF_DRIVER) &&
strncmp(dc.driver, intf->dev.driver->name,
sizeof(dc.driver)) != 0)
@@ -2123,6 +2331,23 @@ static int proc_free_streams(struct usb_dev_state *ps, void __user *arg)
return r;
}
+static int proc_drop_privileges(struct usb_dev_state *ps, void __user *arg)
+{
+ u32 data;
+
+ if (copy_from_user(&data, arg, sizeof(data)))
+ return -EFAULT;
+
+ /* This is an one way operation. Once privileges are
+ * dropped, you cannot regain them. You may however reissue
+ * this ioctl to shrink the allowed interfaces mask.
+ */
+ ps->interface_allowed_mask &= data;
+ ps->privileges_dropped = true;
+
+ return 0;
+}
+
/*
* NOTE: All requests here that have interface numbers as parameters
* are assuming that somehow the configuration has been prevented from
@@ -2311,6 +2536,9 @@ static long usbdev_do_ioctl(struct file *file, unsigned int cmd,
case USBDEVFS_FREE_STREAMS:
ret = proc_free_streams(ps, p);
break;
+ case USBDEVFS_DROP_PRIVILEGES:
+ ret = proc_drop_privileges(ps, p);
+ break;
}
done:
@@ -2366,6 +2594,7 @@ const struct file_operations usbdev_file_operations = {
#ifdef CONFIG_COMPAT
.compat_ioctl = usbdev_compat_ioctl,
#endif
+ .mmap = usbdev_mmap,
.open = usbdev_open,
.release = usbdev_release,
};
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 2057d91d8..dadd1e8df 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -284,7 +284,7 @@ static int usb_probe_interface(struct device *dev)
struct usb_device *udev = interface_to_usbdev(intf);
const struct usb_device_id *id;
int error = -ENODEV;
- int lpm_disable_error;
+ int lpm_disable_error = -ENODEV;
dev_dbg(dev, "%s\n", __func__);
@@ -336,12 +336,14 @@ static int usb_probe_interface(struct device *dev)
* setting during probe, that should also be fine. usb_set_interface()
* will attempt to disable LPM, and fail if it can't disable it.
*/
- lpm_disable_error = usb_unlocked_disable_lpm(udev);
- if (lpm_disable_error && driver->disable_hub_initiated_lpm) {
- dev_err(&intf->dev, "%s Failed to disable LPM for driver %s\n.",
- __func__, driver->name);
- error = lpm_disable_error;
- goto err;
+ if (driver->disable_hub_initiated_lpm) {
+ lpm_disable_error = usb_unlocked_disable_lpm(udev);
+ if (lpm_disable_error) {
+ dev_err(&intf->dev, "%s Failed to disable LPM for driver %s\n.",
+ __func__, driver->name);
+ error = lpm_disable_error;
+ goto err;
+ }
}
/* Carry out a deferred switch to altsetting 0 */
@@ -391,7 +393,8 @@ static int usb_unbind_interface(struct device *dev)
struct usb_interface *intf = to_usb_interface(dev);
struct usb_host_endpoint *ep, **eps = NULL;
struct usb_device *udev;
- int i, j, error, r, lpm_disable_error;
+ int i, j, error, r;
+ int lpm_disable_error = -ENODEV;
intf->condition = USB_INTERFACE_UNBINDING;
@@ -399,12 +402,13 @@ static int usb_unbind_interface(struct device *dev)
udev = interface_to_usbdev(intf);
error = usb_autoresume_device(udev);
- /* Hub-initiated LPM policy may change, so attempt to disable LPM until
+ /* If hub-initiated LPM policy may change, attempt to disable LPM until
* the driver is unbound. If LPM isn't disabled, that's fine because it
* wouldn't be enabled unless all the bound interfaces supported
* hub-initiated LPM.
*/
- lpm_disable_error = usb_unlocked_disable_lpm(udev);
+ if (driver->disable_hub_initiated_lpm)
+ lpm_disable_error = usb_unlocked_disable_lpm(udev);
/*
* Terminate all URBs for this interface unless the driver
@@ -505,7 +509,7 @@ int usb_driver_claim_interface(struct usb_driver *driver,
struct device *dev;
struct usb_device *udev;
int retval = 0;
- int lpm_disable_error;
+ int lpm_disable_error = -ENODEV;
if (!iface)
return -ENODEV;
@@ -526,12 +530,14 @@ int usb_driver_claim_interface(struct usb_driver *driver,
iface->condition = USB_INTERFACE_BOUND;
- /* Disable LPM until this driver is bound. */
- lpm_disable_error = usb_unlocked_disable_lpm(udev);
- if (lpm_disable_error && driver->disable_hub_initiated_lpm) {
- dev_err(&iface->dev, "%s Failed to disable LPM for driver %s\n.",
- __func__, driver->name);
- return -ENOMEM;
+ /* See the comment about disabling LPM in usb_probe_interface(). */
+ if (driver->disable_hub_initiated_lpm) {
+ lpm_disable_error = usb_unlocked_disable_lpm(udev);
+ if (lpm_disable_error) {
+ dev_err(&iface->dev, "%s Failed to disable LPM for driver %s\n.",
+ __func__, driver->name);
+ return -ENOMEM;
+ }
}
/* Claimed interfaces are initially inactive (suspended) and
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index ea337a718..822ced963 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -19,6 +19,7 @@
#include <linux/errno.h>
#include <linux/rwsem.h>
#include <linux/slab.h>
+#include <linux/string.h>
#include <linux/usb.h>
#include "usb.h"
@@ -155,7 +156,6 @@ int usb_register_dev(struct usb_interface *intf,
int minor_base = class_driver->minor_base;
int minor;
char name[20];
- char *temp;
#ifdef CONFIG_USB_DYNAMIC_MINORS
/*
@@ -192,14 +192,9 @@ int usb_register_dev(struct usb_interface *intf,
/* create a usb class device for this usb interface */
snprintf(name, sizeof(name), class_driver->name, minor - minor_base);
- temp = strrchr(name, '/');
- if (temp && (temp[1] != '\0'))
- ++temp;
- else
- temp = name;
intf->usb_dev = device_create(usb_class->class, &intf->dev,
MKDEV(USB_MAJOR, minor), class_driver,
- "%s", temp);
+ "%s", kbasename(name));
if (IS_ERR(intf->usb_dev)) {
down_write(&minor_rwsem);
usb_minors[minor] = NULL;
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index b8b580e5a..7859d738d 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -28,7 +28,6 @@
#ifdef CONFIG_PPC_PMAC
#include <asm/machdep.h>
#include <asm/pmac_feature.h>
-#include <asm/pci-bridge.h>
#include <asm/prom.h>
#endif
@@ -206,7 +205,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
* The xHCI driver has its own irq management
* make sure irq setup is not touched for xhci in generic hcd code
*/
- if ((driver->flags & HCD_MASK) != HCD_USB3) {
+ if ((driver->flags & HCD_MASK) < HCD_USB3) {
if (!dev->irq) {
dev_err(&dev->dev,
"Found HC with no IRQ. Check BIOS/PCI %s setup!\n",
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index df0e3b925..980fc5774 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -90,16 +90,15 @@ unsigned long usb_hcds_loaded;
EXPORT_SYMBOL_GPL(usb_hcds_loaded);
/* host controllers we manage */
-LIST_HEAD (usb_bus_list);
-EXPORT_SYMBOL_GPL (usb_bus_list);
+DEFINE_IDR (usb_bus_idr);
+EXPORT_SYMBOL_GPL (usb_bus_idr);
/* used when allocating bus numbers */
#define USB_MAXBUS 64
-static DECLARE_BITMAP(busmap, USB_MAXBUS);
/* used when updating list of hcds */
-DEFINE_MUTEX(usb_bus_list_lock); /* exported only for usbfs */
-EXPORT_SYMBOL_GPL (usb_bus_list_lock);
+DEFINE_MUTEX(usb_bus_idr_lock); /* exported only for usbfs */
+EXPORT_SYMBOL_GPL (usb_bus_idr_lock);
/* used for controlling access to virtual root hubs */
static DEFINE_SPINLOCK(hcd_root_hub_lock);
@@ -128,6 +127,27 @@ static inline int is_root_hub(struct usb_device *udev)
#define KERNEL_REL bin2bcd(((LINUX_VERSION_CODE >> 16) & 0x0ff))
#define KERNEL_VER bin2bcd(((LINUX_VERSION_CODE >> 8) & 0x0ff))
+/* usb 3.1 root hub device descriptor */
+static const u8 usb31_rh_dev_descriptor[18] = {
+ 0x12, /* __u8 bLength; */
+ USB_DT_DEVICE, /* __u8 bDescriptorType; Device */
+ 0x10, 0x03, /* __le16 bcdUSB; v3.1 */
+
+ 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
+ 0x00, /* __u8 bDeviceSubClass; */
+ 0x03, /* __u8 bDeviceProtocol; USB 3 hub */
+ 0x09, /* __u8 bMaxPacketSize0; 2^9 = 512 Bytes */
+
+ 0x6b, 0x1d, /* __le16 idVendor; Linux Foundation 0x1d6b */
+ 0x03, 0x00, /* __le16 idProduct; device 0x0003 */
+ KERNEL_VER, KERNEL_REL, /* __le16 bcdDevice */
+
+ 0x03, /* __u8 iManufacturer; */
+ 0x02, /* __u8 iProduct; */
+ 0x01, /* __u8 iSerialNumber; */
+ 0x01 /* __u8 bNumConfigurations; */
+};
+
/* usb 3.0 root hub device descriptor */
static const u8 usb3_rh_dev_descriptor[18] = {
0x12, /* __u8 bLength; */
@@ -557,6 +577,8 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
case USB_DT_DEVICE << 8:
switch (hcd->speed) {
case HCD_USB31:
+ bufp = usb31_rh_dev_descriptor;
+ break;
case HCD_USB3:
bufp = usb3_rh_dev_descriptor;
break;
@@ -645,9 +667,15 @@ nongeneric:
/* non-generic request */
switch (typeReq) {
case GetHubStatus:
- case GetPortStatus:
len = 4;
break;
+ case GetPortStatus:
+ if (wValue == HUB_PORT_STATUS)
+ len = 4;
+ else
+ /* other port status types return 8 bytes */
+ len = 8;
+ break;
case GetHubDescriptor:
len = sizeof (struct usb_hub_descriptor);
break;
@@ -966,9 +994,7 @@ static void usb_bus_init (struct usb_bus *bus)
bus->bandwidth_allocated = 0;
bus->bandwidth_int_reqs = 0;
bus->bandwidth_isoc_reqs = 0;
- mutex_init(&bus->usb_address0_mutex);
-
- INIT_LIST_HEAD (&bus->bus_list);
+ mutex_init(&bus->devnum_next_mutex);
}
/*-------------------------------------------------------------------------*/
@@ -988,18 +1014,14 @@ static int usb_register_bus(struct usb_bus *bus)
int result = -E2BIG;
int busnum;
- mutex_lock(&usb_bus_list_lock);
- busnum = find_next_zero_bit(busmap, USB_MAXBUS, 1);
- if (busnum >= USB_MAXBUS) {
- printk (KERN_ERR "%s: too many buses\n", usbcore_name);
+ mutex_lock(&usb_bus_idr_lock);
+ busnum = idr_alloc(&usb_bus_idr, bus, 1, USB_MAXBUS, GFP_KERNEL);
+ if (busnum < 0) {
+ pr_err("%s: failed to get bus number\n", usbcore_name);
goto error_find_busnum;
}
- set_bit(busnum, busmap);
bus->busnum = busnum;
-
- /* Add it to the local list of buses */
- list_add (&bus->bus_list, &usb_bus_list);
- mutex_unlock(&usb_bus_list_lock);
+ mutex_unlock(&usb_bus_idr_lock);
usb_notify_add_bus(bus);
@@ -1008,7 +1030,7 @@ static int usb_register_bus(struct usb_bus *bus)
return 0;
error_find_busnum:
- mutex_unlock(&usb_bus_list_lock);
+ mutex_unlock(&usb_bus_idr_lock);
return result;
}
@@ -1029,13 +1051,11 @@ static void usb_deregister_bus (struct usb_bus *bus)
* controller code, as well as having it call this when cleaning
* itself up
*/
- mutex_lock(&usb_bus_list_lock);
- list_del (&bus->bus_list);
- mutex_unlock(&usb_bus_list_lock);
+ mutex_lock(&usb_bus_idr_lock);
+ idr_remove(&usb_bus_idr, bus->busnum);
+ mutex_unlock(&usb_bus_idr_lock);
usb_notify_remove_bus(bus);
-
- clear_bit(bus->busnum, busmap);
}
/**
@@ -1063,12 +1083,12 @@ static int register_root_hub(struct usb_hcd *hcd)
set_bit (devnum, usb_dev->bus->devmap.devicemap);
usb_set_device_state(usb_dev, USB_STATE_ADDRESS);
- mutex_lock(&usb_bus_list_lock);
+ mutex_lock(&usb_bus_idr_lock);
usb_dev->ep0.desc.wMaxPacketSize = cpu_to_le16(64);
retval = usb_get_device_descriptor(usb_dev, USB_DT_DEVICE_SIZE);
if (retval != sizeof usb_dev->descriptor) {
- mutex_unlock(&usb_bus_list_lock);
+ mutex_unlock(&usb_bus_idr_lock);
dev_dbg (parent_dev, "can't read %s device descriptor %d\n",
dev_name(&usb_dev->dev), retval);
return (retval < 0) ? retval : -EMSGSIZE;
@@ -1078,8 +1098,8 @@ static int register_root_hub(struct usb_hcd *hcd)
retval = usb_get_bos_descriptor(usb_dev);
if (!retval) {
usb_dev->lpm_capable = usb_device_supports_lpm(usb_dev);
- } else if (usb_dev->speed == USB_SPEED_SUPER) {
- mutex_unlock(&usb_bus_list_lock);
+ } else if (usb_dev->speed >= USB_SPEED_SUPER) {
+ mutex_unlock(&usb_bus_idr_lock);
dev_dbg(parent_dev, "can't read %s bos descriptor %d\n",
dev_name(&usb_dev->dev), retval);
return retval;
@@ -1099,7 +1119,7 @@ static int register_root_hub(struct usb_hcd *hcd)
if (HCD_DEAD(hcd))
usb_hc_died (hcd); /* This time clean up */
}
- mutex_unlock(&usb_bus_list_lock);
+ mutex_unlock(&usb_bus_idr_lock);
return retval;
}
@@ -1408,7 +1428,8 @@ static void hcd_free_coherent(struct usb_bus *bus, dma_addr_t *dma_handle,
void usb_hcd_unmap_urb_setup_for_dma(struct usb_hcd *hcd, struct urb *urb)
{
- if (urb->transfer_flags & URB_SETUP_MAP_SINGLE)
+ if (IS_ENABLED(CONFIG_HAS_DMA) &&
+ (urb->transfer_flags & URB_SETUP_MAP_SINGLE))
dma_unmap_single(hcd->self.controller,
urb->setup_dma,
sizeof(struct usb_ctrlrequest),
@@ -1440,17 +1461,20 @@ void usb_hcd_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb)
usb_hcd_unmap_urb_setup_for_dma(hcd, urb);
dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
- if (urb->transfer_flags & URB_DMA_MAP_SG)
+ if (IS_ENABLED(CONFIG_HAS_DMA) &&
+ (urb->transfer_flags & URB_DMA_MAP_SG))
dma_unmap_sg(hcd->self.controller,
urb->sg,
urb->num_sgs,
dir);
- else if (urb->transfer_flags & URB_DMA_MAP_PAGE)
+ else if (IS_ENABLED(CONFIG_HAS_DMA) &&
+ (urb->transfer_flags & URB_DMA_MAP_PAGE))
dma_unmap_page(hcd->self.controller,
urb->transfer_dma,
urb->transfer_buffer_length,
dir);
- else if (urb->transfer_flags & URB_DMA_MAP_SINGLE)
+ else if (IS_ENABLED(CONFIG_HAS_DMA) &&
+ (urb->transfer_flags & URB_DMA_MAP_SINGLE))
dma_unmap_single(hcd->self.controller,
urb->transfer_dma,
urb->transfer_buffer_length,
@@ -1492,7 +1516,7 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
if (usb_endpoint_xfer_control(&urb->ep->desc)) {
if (hcd->self.uses_pio_for_control)
return ret;
- if (hcd->self.uses_dma) {
+ if (IS_ENABLED(CONFIG_HAS_DMA) && hcd->self.uses_dma) {
urb->setup_dma = dma_map_single(
hcd->self.controller,
urb->setup_packet,
@@ -1518,7 +1542,7 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
if (urb->transfer_buffer_length != 0
&& !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) {
- if (hcd->self.uses_dma) {
+ if (IS_ENABLED(CONFIG_HAS_DMA) && hcd->self.uses_dma) {
if (urb->num_sgs) {
int n;
@@ -2112,7 +2136,7 @@ int usb_alloc_streams(struct usb_interface *interface,
hcd = bus_to_hcd(dev->bus);
if (!hcd->driver->alloc_streams || !hcd->driver->free_streams)
return -EINVAL;
- if (dev->speed != USB_SPEED_SUPER)
+ if (dev->speed < USB_SPEED_SUPER)
return -EINVAL;
if (dev->state < USB_STATE_CONFIGURED)
return -ENODEV;
@@ -2160,7 +2184,7 @@ int usb_free_streams(struct usb_interface *interface,
dev = interface_to_usbdev(interface);
hcd = bus_to_hcd(dev->bus);
- if (dev->speed != USB_SPEED_SUPER)
+ if (dev->speed < USB_SPEED_SUPER)
return -EINVAL;
/* Double-free is not allowed */
@@ -2208,7 +2232,7 @@ int usb_hcd_get_frame_number (struct usb_device *udev)
int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg)
{
- struct usb_hcd *hcd = container_of(rhdev->bus, struct usb_hcd, self);
+ struct usb_hcd *hcd = bus_to_hcd(rhdev->bus);
int status;
int old_state = hcd->state;
@@ -2257,7 +2281,7 @@ int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg)
int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg)
{
- struct usb_hcd *hcd = container_of(rhdev->bus, struct usb_hcd, self);
+ struct usb_hcd *hcd = bus_to_hcd(rhdev->bus);
int status;
int old_state = hcd->state;
@@ -2371,7 +2395,7 @@ int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num)
* boards with root hubs hooked up to internal devices (instead of
* just the OTG port) may need more attention to resetting...
*/
- hcd = container_of (bus, struct usb_hcd, self);
+ hcd = bus_to_hcd(bus);
if (port_num && hcd->driver->start_port_reset)
status = hcd->driver->start_port_reset(hcd, port_num);
@@ -2497,6 +2521,14 @@ struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
return NULL;
}
if (primary_hcd == NULL) {
+ hcd->address0_mutex = kmalloc(sizeof(*hcd->address0_mutex),
+ GFP_KERNEL);
+ if (!hcd->address0_mutex) {
+ kfree(hcd);
+ dev_dbg(dev, "hcd address0 mutex alloc failed\n");
+ return NULL;
+ }
+ mutex_init(hcd->address0_mutex);
hcd->bandwidth_mutex = kmalloc(sizeof(*hcd->bandwidth_mutex),
GFP_KERNEL);
if (!hcd->bandwidth_mutex) {
@@ -2508,6 +2540,7 @@ struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
dev_set_drvdata(dev, hcd);
} else {
mutex_lock(&usb_port_peer_mutex);
+ hcd->address0_mutex = primary_hcd->address0_mutex;
hcd->bandwidth_mutex = primary_hcd->bandwidth_mutex;
hcd->primary_hcd = primary_hcd;
primary_hcd->primary_hcd = primary_hcd;
@@ -2574,8 +2607,10 @@ static void hcd_release(struct kref *kref)
struct usb_hcd *hcd = container_of (kref, struct usb_hcd, kref);
mutex_lock(&usb_port_peer_mutex);
- if (usb_hcd_is_primary_hcd(hcd))
+ if (usb_hcd_is_primary_hcd(hcd)) {
+ kfree(hcd->address0_mutex);
kfree(hcd->bandwidth_mutex);
+ }
if (hcd->shared_hcd) {
struct usb_hcd *peer = hcd->shared_hcd;
@@ -2778,9 +2813,11 @@ int usb_add_hcd(struct usb_hcd *hcd,
rhdev->speed = USB_SPEED_WIRELESS;
break;
case HCD_USB3:
- case HCD_USB31:
rhdev->speed = USB_SPEED_SUPER;
break;
+ case HCD_USB31:
+ rhdev->speed = USB_SPEED_SUPER_PLUS;
+ break;
default:
retval = -EINVAL;
goto err_set_rh_speed;
@@ -2863,9 +2900,9 @@ error_create_attr_group:
#ifdef CONFIG_PM
cancel_work_sync(&hcd->wakeup_work);
#endif
- mutex_lock(&usb_bus_list_lock);
+ mutex_lock(&usb_bus_idr_lock);
usb_disconnect(&rhdev); /* Sets rhdev to NULL */
- mutex_unlock(&usb_bus_list_lock);
+ mutex_unlock(&usb_bus_idr_lock);
err_register_root_hub:
hcd->rh_pollable = 0;
clear_bit(HCD_FLAG_POLL_RH, &hcd->flags);
@@ -2932,9 +2969,9 @@ void usb_remove_hcd(struct usb_hcd *hcd)
cancel_work_sync(&hcd->wakeup_work);
#endif
- mutex_lock(&usb_bus_list_lock);
+ mutex_lock(&usb_bus_idr_lock);
usb_disconnect(&rhdev); /* Sets rhdev to NULL */
- mutex_unlock(&usb_bus_list_lock);
+ mutex_unlock(&usb_bus_idr_lock);
/*
* tasklet_kill() isn't needed here because:
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 84f65743f..1ab42bfbe 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -49,7 +49,7 @@ static void hub_event(struct work_struct *work);
DEFINE_MUTEX(usb_port_peer_mutex);
/* cycle leds on hubs that aren't blinking for attention */
-static bool blinkenlights = 0;
+static bool blinkenlights;
module_param(blinkenlights, bool, S_IRUGO);
MODULE_PARM_DESC(blinkenlights, "true to cycle leds on hubs");
@@ -78,7 +78,7 @@ MODULE_PARM_DESC(initial_descriptor_timeout,
* otherwise the new scheme is used. If that fails and "use_both_schemes"
* is set, then the driver will make another attempt, using the other scheme.
*/
-static bool old_scheme_first = 0;
+static bool old_scheme_first;
module_param(old_scheme_first, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(old_scheme_first,
"start with the old device initialization scheme");
@@ -298,7 +298,7 @@ static void usb_set_lpm_parameters(struct usb_device *udev)
unsigned int hub_u1_del;
unsigned int hub_u2_del;
- if (!udev->lpm_capable || udev->speed != USB_SPEED_SUPER)
+ if (!udev->lpm_capable || udev->speed < USB_SPEED_SUPER)
return;
hub = usb_hub_to_struct_hub(udev->parent);
@@ -537,29 +537,34 @@ static int get_hub_status(struct usb_device *hdev,
/*
* USB 2.0 spec Section 11.24.2.7
+ * USB 3.1 takes into use the wValue and wLength fields, spec Section 10.16.2.6
*/
static int get_port_status(struct usb_device *hdev, int port1,
- struct usb_port_status *data)
+ void *data, u16 value, u16 length)
{
int i, status = -ETIMEDOUT;
for (i = 0; i < USB_STS_RETRIES &&
(status == -ETIMEDOUT || status == -EPIPE); i++) {
status = usb_control_msg(hdev, usb_rcvctrlpipe(hdev, 0),
- USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port1,
- data, sizeof(*data), USB_STS_TIMEOUT);
+ USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, value,
+ port1, data, length, USB_STS_TIMEOUT);
}
return status;
}
-static int hub_port_status(struct usb_hub *hub, int port1,
- u16 *status, u16 *change)
+static int hub_ext_port_status(struct usb_hub *hub, int port1, int type,
+ u16 *status, u16 *change, u32 *ext_status)
{
int ret;
+ int len = 4;
+
+ if (type != HUB_PORT_STATUS)
+ len = 8;
mutex_lock(&hub->status_mutex);
- ret = get_port_status(hub->hdev, port1, &hub->status->port);
- if (ret < 4) {
+ ret = get_port_status(hub->hdev, port1, &hub->status->port, type, len);
+ if (ret < len) {
if (ret != -ENODEV)
dev_err(hub->intfdev,
"%s failed (err = %d)\n", __func__, ret);
@@ -568,13 +573,22 @@ static int hub_port_status(struct usb_hub *hub, int port1,
} else {
*status = le16_to_cpu(hub->status->port.wPortStatus);
*change = le16_to_cpu(hub->status->port.wPortChange);
-
+ if (type != HUB_PORT_STATUS && ext_status)
+ *ext_status = le32_to_cpu(
+ hub->status->port.dwExtPortStatus);
ret = 0;
}
mutex_unlock(&hub->status_mutex);
return ret;
}
+static int hub_port_status(struct usb_hub *hub, int port1,
+ u16 *status, u16 *change)
+{
+ return hub_ext_port_status(hub, port1, HUB_PORT_STATUS,
+ status, change, NULL);
+}
+
static void kick_hub_wq(struct usb_hub *hub)
{
struct usb_interface *intf;
@@ -2066,7 +2080,7 @@ static void choose_devnum(struct usb_device *udev)
struct usb_bus *bus = udev->bus;
/* be safe when more hub events are proceed in parallel */
- mutex_lock(&bus->usb_address0_mutex);
+ mutex_lock(&bus->devnum_next_mutex);
if (udev->wusb) {
devnum = udev->portnum + 1;
BUG_ON(test_bit(devnum, bus->devmap.devicemap));
@@ -2084,7 +2098,7 @@ static void choose_devnum(struct usb_device *udev)
set_bit(devnum, bus->devmap.devicemap);
udev->devnum = devnum;
}
- mutex_unlock(&bus->usb_address0_mutex);
+ mutex_unlock(&bus->devnum_next_mutex);
}
static void release_devnum(struct usb_device *udev)
@@ -2131,7 +2145,7 @@ static void hub_disconnect_children(struct usb_device *udev)
* Something got disconnected. Get rid of it and all of its children.
*
* If *pdev is a normal device then the parent hub must already be locked.
- * If *pdev is a root hub then the caller must hold the usb_bus_list_lock,
+ * If *pdev is a root hub then the caller must hold the usb_bus_idr_lock,
* which protects the set of root hubs as well as the list of buses.
*
* Only hub drivers (including virtual root hub drivers for host
@@ -2429,7 +2443,7 @@ static void set_usb_port_removable(struct usb_device *udev)
* enumerated. The device descriptor is available, but not descriptors
* for any device configuration. The caller must have locked either
* the parent hub (if udev is a normal device) or else the
- * usb_bus_list_lock (if udev is a root hub). The parent's pointer to
+ * usb_bus_idr_lock (if udev is a root hub). The parent's pointer to
* udev has already been installed, but udev is not yet visible through
* sysfs or other filesystem code.
*
@@ -2612,6 +2626,32 @@ out_authorized:
return result;
}
+/*
+ * Return 1 if port speed is SuperSpeedPlus, 0 otherwise
+ * check it from the link protocol field of the current speed ID attribute.
+ * current speed ID is got from ext port status request. Sublink speed attribute
+ * table is returned with the hub BOS SSP device capability descriptor
+ */
+static int port_speed_is_ssp(struct usb_device *hdev, int speed_id)
+{
+ int ssa_count;
+ u32 ss_attr;
+ int i;
+ struct usb_ssp_cap_descriptor *ssp_cap = hdev->bos->ssp_cap;
+
+ if (!ssp_cap)
+ return 0;
+
+ ssa_count = le32_to_cpu(ssp_cap->bmAttributes) &
+ USB_SSP_SUBLINK_SPEED_ATTRIBS;
+
+ for (i = 0; i <= ssa_count; i++) {
+ ss_attr = le32_to_cpu(ssp_cap->bmSublinkSpeedAttr[i]);
+ if (speed_id == (ss_attr & USB_SSP_SUBLINK_SPEED_SSID))
+ return !!(ss_attr & USB_SSP_SUBLINK_SPEED_LP);
+ }
+ return 0;
+}
/* Returns 1 if @hub is a WUSB root hub, 0 otherwise */
static unsigned hub_is_wusb(struct usb_hub *hub)
@@ -2619,7 +2659,7 @@ static unsigned hub_is_wusb(struct usb_hub *hub)
struct usb_hcd *hcd;
if (hub->hdev->parent != NULL) /* not a root hub? */
return 0;
- hcd = container_of(hub->hdev->bus, struct usb_hcd, self);
+ hcd = bus_to_hcd(hub->hdev->bus);
return hcd->wireless;
}
@@ -2645,7 +2685,7 @@ static unsigned hub_is_wusb(struct usb_hub *hub)
*/
static bool use_new_scheme(struct usb_device *udev, int retry)
{
- if (udev->speed == USB_SPEED_SUPER)
+ if (udev->speed >= USB_SPEED_SUPER)
return false;
return USE_NEW_SCHEME(retry);
@@ -2676,6 +2716,7 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
int delay_time, ret;
u16 portstatus;
u16 portchange;
+ u32 ext_portstatus = 0;
for (delay_time = 0;
delay_time < HUB_RESET_TIMEOUT;
@@ -2684,7 +2725,14 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
msleep(delay);
/* read and decode port status */
- ret = hub_port_status(hub, port1, &portstatus, &portchange);
+ if (hub_is_superspeedplus(hub->hdev))
+ ret = hub_ext_port_status(hub, port1,
+ HUB_EXT_PORT_STATUS,
+ &portstatus, &portchange,
+ &ext_portstatus);
+ else
+ ret = hub_port_status(hub, port1, &portstatus,
+ &portchange);
if (ret < 0)
return ret;
@@ -2727,6 +2775,10 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
if (hub_is_wusb(hub))
udev->speed = USB_SPEED_WIRELESS;
+ else if (hub_is_superspeedplus(hub->hdev) &&
+ port_speed_is_ssp(hub->hdev, ext_portstatus &
+ USB_EXT_PORT_STAT_RX_SPEED_ID))
+ udev->speed = USB_SPEED_SUPER_PLUS;
else if (hub_is_superspeed(hub->hdev))
udev->speed = USB_SPEED_SUPER;
else if (portstatus & USB_PORT_STAT_HIGH_SPEED)
@@ -3989,7 +4041,7 @@ int usb_disable_lpm(struct usb_device *udev)
struct usb_hcd *hcd;
if (!udev || !udev->parent ||
- udev->speed != USB_SPEED_SUPER ||
+ udev->speed < USB_SPEED_SUPER ||
!udev->lpm_capable ||
udev->state < USB_STATE_DEFAULT)
return 0;
@@ -4048,7 +4100,7 @@ void usb_enable_lpm(struct usb_device *udev)
struct usb_port *port_dev;
if (!udev || !udev->parent ||
- udev->speed != USB_SPEED_SUPER ||
+ udev->speed < USB_SPEED_SUPER ||
!udev->lpm_capable ||
udev->state < USB_STATE_DEFAULT)
return;
@@ -4312,7 +4364,7 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1,
if (oldspeed == USB_SPEED_LOW)
delay = HUB_LONG_RESET_TIME;
- mutex_lock(&hdev->bus->usb_address0_mutex);
+ mutex_lock(hcd->address0_mutex);
/* Reset the device; full speed may morph to high speed */
/* FIXME a USB 2.0 device may morph into SuperSpeed on reset. */
@@ -4323,7 +4375,9 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1,
retval = -ENODEV;
- if (oldspeed != USB_SPEED_UNKNOWN && oldspeed != udev->speed) {
+ /* Don't allow speed changes at reset, except usb 3.0 to faster */
+ if (oldspeed != USB_SPEED_UNKNOWN && oldspeed != udev->speed &&
+ !(oldspeed == USB_SPEED_SUPER && udev->speed > oldspeed)) {
dev_dbg(&udev->dev, "device reset changed speed!\n");
goto fail;
}
@@ -4335,6 +4389,7 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1,
* reported as 0xff in the device descriptor). WUSB1.0[4.8.1].
*/
switch (udev->speed) {
+ case USB_SPEED_SUPER_PLUS:
case USB_SPEED_SUPER:
case USB_SPEED_WIRELESS: /* fixed at 512 */
udev->ep0.desc.wMaxPacketSize = cpu_to_le16(512);
@@ -4361,7 +4416,7 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1,
else
speed = usb_speed_string(udev->speed);
- if (udev->speed != USB_SPEED_SUPER)
+ if (udev->speed < USB_SPEED_SUPER)
dev_info(&udev->dev,
"%s %s USB device number %d using %s\n",
(udev->config) ? "reset" : "new", speed,
@@ -4491,11 +4546,12 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1,
devnum, retval);
goto fail;
}
- if (udev->speed == USB_SPEED_SUPER) {
+ if (udev->speed >= USB_SPEED_SUPER) {
devnum = udev->devnum;
dev_info(&udev->dev,
- "%s SuperSpeed USB device number %d using %s\n",
+ "%s SuperSpeed%s USB device number %d using %s\n",
(udev->config) ? "reset" : "new",
+ (udev->speed == USB_SPEED_SUPER_PLUS) ? "Plus" : "",
devnum, udev->bus->controller->driver->name);
}
@@ -4534,7 +4590,7 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1,
* got from those devices show they aren't superspeed devices. Warm
* reset the port attached by the devices can fix them.
*/
- if ((udev->speed == USB_SPEED_SUPER) &&
+ if ((udev->speed >= USB_SPEED_SUPER) &&
(le16_to_cpu(udev->descriptor.bcdUSB) < 0x0300)) {
dev_err(&udev->dev, "got a wrong device descriptor, "
"warm reset device\n");
@@ -4545,7 +4601,7 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1,
}
if (udev->descriptor.bMaxPacketSize0 == 0xff ||
- udev->speed == USB_SPEED_SUPER)
+ udev->speed >= USB_SPEED_SUPER)
i = 512;
else
i = udev->descriptor.bMaxPacketSize0;
@@ -4594,7 +4650,7 @@ fail:
hub_port_disable(hub, port1, 0);
update_devnum(udev, devnum); /* for disconnect processing */
}
- mutex_unlock(&hdev->bus->usb_address0_mutex);
+ mutex_unlock(hcd->address0_mutex);
return retval;
}
@@ -4755,7 +4811,7 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
udev->level = hdev->level + 1;
udev->wusb = hub_is_wusb(hub);
- /* Only USB 3.0 devices are connected to SuperSpeed hubs. */
+ /* Devices connected to SuperSpeed hubs are USB 3.0 or later */
if (hub_is_superspeed(hub->hdev))
udev->speed = USB_SPEED_SUPER;
else
diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h
index 45d070dd1..34c1a7e22 100644
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@@ -140,6 +140,13 @@ static inline int hub_is_superspeed(struct usb_device *hdev)
return hdev->descriptor.bDeviceProtocol == USB_HUB_PR_SS;
}
+static inline int hub_is_superspeedplus(struct usb_device *hdev)
+{
+ return (hdev->descriptor.bDeviceProtocol == USB_HUB_PR_SS &&
+ le16_to_cpu(hdev->descriptor.bcdUSB) >= 0x0310 &&
+ hdev->bos->ssp_cap);
+}
+
static inline unsigned hub_power_on_good_delay(struct usb_hub *hub)
{
unsigned delay = hub->descriptor->bPwrOn2PwrGood * 2;
diff --git a/drivers/usb/core/of.c b/drivers/usb/core/of.c
new file mode 100644
index 000000000..2289700c3
--- /dev/null
+++ b/drivers/usb/core/of.c
@@ -0,0 +1,47 @@
+/*
+ * of.c The helpers for hcd device tree support
+ *
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ * Author: Peter Chen <peter.chen@freescale.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 of
+ * the License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/of.h>
+
+/**
+ * usb_of_get_child_node - Find the device node match port number
+ * @parent: the parent device node
+ * @portnum: the port number which device is connecting
+ *
+ * Find the node from device tree according to its port number.
+ *
+ * Return: On success, a pointer to the device node, %NULL on failure.
+ */
+struct device_node *usb_of_get_child_node(struct device_node *parent,
+ int portnum)
+{
+ struct device_node *node;
+ u32 port;
+
+ for_each_child_of_node(parent, node) {
+ if (!of_property_read_u32(node, "reg", &port)) {
+ if (port == portnum)
+ return node;
+ }
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(usb_of_get_child_node);
+
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 65b6e6b84..c953a0f1c 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -23,10 +23,12 @@ static ssize_t field##_show(struct device *dev, \
{ \
struct usb_device *udev; \
struct usb_host_config *actconfig; \
- ssize_t rc = 0; \
+ ssize_t rc; \
\
udev = to_usb_device(dev); \
- usb_lock_device(udev); \
+ rc = usb_lock_device_interruptible(udev); \
+ if (rc < 0) \
+ return -EINTR; \
actconfig = udev->actconfig; \
if (actconfig) \
rc = sprintf(buf, format_string, \
@@ -47,10 +49,12 @@ static ssize_t bMaxPower_show(struct device *dev,
{
struct usb_device *udev;
struct usb_host_config *actconfig;
- ssize_t rc = 0;
+ ssize_t rc;
udev = to_usb_device(dev);
- usb_lock_device(udev);
+ rc = usb_lock_device_interruptible(udev);
+ if (rc < 0)
+ return -EINTR;
actconfig = udev->actconfig;
if (actconfig)
rc = sprintf(buf, "%dmA\n", usb_get_max_power(udev, actconfig));
@@ -64,10 +68,12 @@ static ssize_t configuration_show(struct device *dev,
{
struct usb_device *udev;
struct usb_host_config *actconfig;
- ssize_t rc = 0;
+ ssize_t rc;
udev = to_usb_device(dev);
- usb_lock_device(udev);
+ rc = usb_lock_device_interruptible(udev);
+ if (rc < 0)
+ return -EINTR;
actconfig = udev->actconfig;
if (actconfig && actconfig->string)
rc = sprintf(buf, "%s\n", actconfig->string);
@@ -84,11 +90,13 @@ static ssize_t bConfigurationValue_store(struct device *dev,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
- int config, value;
+ int config, value, rc;
if (sscanf(buf, "%d", &config) != 1 || config < -1 || config > 255)
return -EINVAL;
- usb_lock_device(udev);
+ rc = usb_lock_device_interruptible(udev);
+ if (rc < 0)
+ return -EINTR;
value = usb_set_configuration(udev, config);
usb_unlock_device(udev);
return (value < 0) ? value : count;
@@ -105,7 +113,9 @@ static ssize_t name##_show(struct device *dev, \
int retval; \
\
udev = to_usb_device(dev); \
- usb_lock_device(udev); \
+ retval = usb_lock_device_interruptible(udev); \
+ if (retval < 0) \
+ return -EINTR; \
retval = sprintf(buf, "%s\n", udev->name); \
usb_unlock_device(udev); \
return retval; \
@@ -141,6 +151,9 @@ static ssize_t speed_show(struct device *dev, struct device_attribute *attr,
case USB_SPEED_SUPER:
speed = "5000";
break;
+ case USB_SPEED_SUPER_PLUS:
+ speed = "10000";
+ break;
default:
speed = "unknown";
}
@@ -224,11 +237,13 @@ static ssize_t avoid_reset_quirk_store(struct device *dev,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
- int val;
+ int val, rc;
if (sscanf(buf, "%d", &val) != 1 || val < 0 || val > 1)
return -EINVAL;
- usb_lock_device(udev);
+ rc = usb_lock_device_interruptible(udev);
+ if (rc < 0)
+ return -EINTR;
if (val)
udev->quirks |= USB_QUIRK_RESET;
else
@@ -294,7 +309,7 @@ static ssize_t persist_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
- int value;
+ int value, rc;
/* Hubs are always enabled for USB_PERSIST */
if (udev->descriptor.bDeviceClass == USB_CLASS_HUB)
@@ -303,7 +318,9 @@ static ssize_t persist_store(struct device *dev, struct device_attribute *attr,
if (sscanf(buf, "%d", &value) != 1)
return -EINVAL;
- usb_lock_device(udev);
+ rc = usb_lock_device_interruptible(udev);
+ if (rc < 0)
+ return -EINTR;
udev->persist_enabled = !!value;
usb_unlock_device(udev);
return count;
@@ -420,13 +437,16 @@ static ssize_t level_store(struct device *dev, struct device_attribute *attr,
int len = count;
char *cp;
int rc = count;
+ int rv;
warn_level();
cp = memchr(buf, '\n', count);
if (cp)
len = cp - buf;
- usb_lock_device(udev);
+ rv = usb_lock_device_interruptible(udev);
+ if (rv < 0)
+ return -EINTR;
if (len == sizeof on_string - 1 &&
strncmp(buf, on_string, len) == 0)
@@ -466,7 +486,9 @@ static ssize_t usb2_hardware_lpm_store(struct device *dev,
bool value;
int ret;
- usb_lock_device(udev);
+ ret = usb_lock_device_interruptible(udev);
+ if (ret < 0)
+ return -EINTR;
ret = strtobool(buf, &value);
@@ -536,8 +558,11 @@ static ssize_t usb3_hardware_lpm_u1_show(struct device *dev,
{
struct usb_device *udev = to_usb_device(dev);
const char *p;
+ int rc;
- usb_lock_device(udev);
+ rc = usb_lock_device_interruptible(udev);
+ if (rc < 0)
+ return -EINTR;
if (udev->usb3_lpm_u1_enabled)
p = "enabled";
@@ -555,8 +580,11 @@ static ssize_t usb3_hardware_lpm_u2_show(struct device *dev,
{
struct usb_device *udev = to_usb_device(dev);
const char *p;
+ int rc;
- usb_lock_device(udev);
+ rc = usb_lock_device_interruptible(udev);
+ if (rc < 0)
+ return -EINTR;
if (udev->usb3_lpm_u2_enabled)
p = "enabled";
@@ -822,7 +850,6 @@ read_descriptors(struct file *filp, struct kobject *kobj,
* Following that are the raw descriptor entries for all the
* configurations (config plus subsidiary descriptors).
*/
- usb_lock_device(udev);
for (cfgno = -1; cfgno < udev->descriptor.bNumConfigurations &&
nleft > 0; ++cfgno) {
if (cfgno < 0) {
@@ -843,7 +870,6 @@ read_descriptors(struct file *filp, struct kobject *kobj,
off -= srclen;
}
}
- usb_unlock_device(udev);
return count - nleft;
}
@@ -969,7 +995,9 @@ static ssize_t supports_autosuspend_show(struct device *dev,
{
int s;
- device_lock(dev);
+ s = device_lock_interruptible(dev);
+ if (s < 0)
+ return -EINTR;
/* Devices will be autosuspended even when an interface isn't claimed */
s = (!dev->driver || to_usb_driver(dev->driver)->supports_autosuspend);
device_unlock(dev);
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 3d274778c..c601e25b6 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -401,7 +401,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
/* SuperSpeed isoc endpoints have up to 16 bursts of up to
* 3 packets each
*/
- if (dev->speed == USB_SPEED_SUPER) {
+ if (dev->speed >= USB_SPEED_SUPER) {
int burst = 1 + ep->ss_ep_comp.bMaxBurst;
int mult = USB_SS_MULT(ep->ss_ep_comp.bmAttributes);
max *= burst;
@@ -499,6 +499,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
}
/* too big? */
switch (dev->speed) {
+ case USB_SPEED_SUPER_PLUS:
case USB_SPEED_SUPER: /* units are 125us */
/* Handle up to 2^(16-1) microframes */
if (urb->interval > (1 << 15))
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 77e4c9bc0..479187c32 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -36,6 +36,7 @@
#include <linux/mutex.h>
#include <linux/workqueue.h>
#include <linux/debugfs.h>
+#include <linux/usb/of.h>
#include <asm/io.h>
#include <linux/scatterlist.h>
@@ -241,7 +242,7 @@ static int __each_dev(struct device *dev, void *data)
if (!is_usb_device(dev))
return 0;
- return arg->fn(container_of(dev, struct usb_device, dev), arg->data);
+ return arg->fn(to_usb_device(dev), arg->data);
}
/**
@@ -391,7 +392,7 @@ struct device_type usb_device_type = {
/* Returns 1 if @usb_bus is WUSB, 0 otherwise */
static unsigned usb_bus_is_wusb(struct usb_bus *bus)
{
- struct usb_hcd *hcd = container_of(bus, struct usb_hcd, self);
+ struct usb_hcd *hcd = bus_to_hcd(bus);
return hcd->wireless;
}
@@ -417,6 +418,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent,
struct usb_device *dev;
struct usb_hcd *usb_hcd = bus_to_hcd(bus);
unsigned root_hub = 0;
+ unsigned raw_port = port1;
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
@@ -464,6 +466,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent,
dev->route = 0;
dev->dev.parent = bus->controller;
+ dev->dev.of_node = bus->controller->of_node;
dev_set_name(&dev->dev, "usb%d", bus->busnum);
root_hub = 1;
} else {
@@ -488,6 +491,14 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent,
dev->dev.parent = &parent->dev;
dev_set_name(&dev->dev, "%d-%s", bus->busnum, dev->devpath);
+ if (!parent->parent) {
+ /* device under root hub's port */
+ raw_port = usb_hcd_find_raw_port_number(usb_hcd,
+ port1);
+ }
+ dev->dev.of_node = usb_of_get_child_node(parent->dev.of_node,
+ raw_port);
+
/* hub driver sets up TT records */
}
@@ -1109,6 +1120,7 @@ static void __exit usb_exit(void)
bus_unregister(&usb_bus_type);
usb_acpi_unregister();
usb_debugfs_cleanup();
+ idr_destroy(&usb_bus_idr);
}
subsys_initcall(usb_init);
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 05b5e17ab..53318126e 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -45,7 +45,7 @@ static inline unsigned usb_get_max_power(struct usb_device *udev,
struct usb_host_config *c)
{
/* SuperSpeed power is in 8 mA units; others are in 2 mA units */
- unsigned mul = (udev->speed == USB_SPEED_SUPER ? 8 : 2);
+ unsigned mul = (udev->speed >= USB_SPEED_SUPER ? 8 : 2);
return c->desc.bMaxPower * mul;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-20 05:54:00 +0000