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Diffstat (limited to 'drivers/usb/core')
-rw-r--r--drivers/usb/core/config.c66
-rw-r--r--drivers/usb/core/devio.c19
-rw-r--r--drivers/usb/core/hub.c23
3 files changed, 85 insertions, 23 deletions
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 31ccdccd7..15ce4ab11 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -171,6 +171,31 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
ep, buffer, size);
}
+static const unsigned short low_speed_maxpacket_maxes[4] = {
+ [USB_ENDPOINT_XFER_CONTROL] = 8,
+ [USB_ENDPOINT_XFER_ISOC] = 0,
+ [USB_ENDPOINT_XFER_BULK] = 0,
+ [USB_ENDPOINT_XFER_INT] = 8,
+};
+static const unsigned short full_speed_maxpacket_maxes[4] = {
+ [USB_ENDPOINT_XFER_CONTROL] = 64,
+ [USB_ENDPOINT_XFER_ISOC] = 1023,
+ [USB_ENDPOINT_XFER_BULK] = 64,
+ [USB_ENDPOINT_XFER_INT] = 64,
+};
+static const unsigned short high_speed_maxpacket_maxes[4] = {
+ [USB_ENDPOINT_XFER_CONTROL] = 64,
+ [USB_ENDPOINT_XFER_ISOC] = 1024,
+ [USB_ENDPOINT_XFER_BULK] = 512,
+ [USB_ENDPOINT_XFER_INT] = 1024,
+};
+static const unsigned short super_speed_maxpacket_maxes[4] = {
+ [USB_ENDPOINT_XFER_CONTROL] = 512,
+ [USB_ENDPOINT_XFER_ISOC] = 1024,
+ [USB_ENDPOINT_XFER_BULK] = 1024,
+ [USB_ENDPOINT_XFER_INT] = 1024,
+};
+
static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
int asnum, struct usb_host_interface *ifp, int num_ep,
unsigned char *buffer, int size)
@@ -179,6 +204,8 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
struct usb_endpoint_descriptor *d;
struct usb_host_endpoint *endpoint;
int n, i, j, retval;
+ unsigned int maxp;
+ const unsigned short *maxpacket_maxes;
d = (struct usb_endpoint_descriptor *) buffer;
buffer += d->bLength;
@@ -286,6 +313,42 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
endpoint->desc.wMaxPacketSize = cpu_to_le16(8);
}
+ /* Validate the wMaxPacketSize field */
+ maxp = usb_endpoint_maxp(&endpoint->desc);
+
+ /* Find the highest legal maxpacket size for this endpoint */
+ i = 0; /* additional transactions per microframe */
+ switch (to_usb_device(ddev)->speed) {
+ case USB_SPEED_LOW:
+ maxpacket_maxes = low_speed_maxpacket_maxes;
+ break;
+ case USB_SPEED_FULL:
+ maxpacket_maxes = full_speed_maxpacket_maxes;
+ break;
+ case USB_SPEED_HIGH:
+ /* Bits 12..11 are allowed only for HS periodic endpoints */
+ if (usb_endpoint_xfer_int(d) || usb_endpoint_xfer_isoc(d)) {
+ i = maxp & (BIT(12) | BIT(11));
+ maxp &= ~i;
+ }
+ /* fallthrough */
+ default:
+ maxpacket_maxes = high_speed_maxpacket_maxes;
+ break;
+ case USB_SPEED_SUPER:
+ case USB_SPEED_SUPER_PLUS:
+ maxpacket_maxes = super_speed_maxpacket_maxes;
+ break;
+ }
+ j = maxpacket_maxes[usb_endpoint_type(&endpoint->desc)];
+
+ if (maxp > j) {
+ dev_warn(ddev, "config %d interface %d altsetting %d endpoint 0x%X has invalid maxpacket %d, setting to %d\n",
+ cfgno, inum, asnum, d->bEndpointAddress, maxp, j);
+ maxp = j;
+ endpoint->desc.wMaxPacketSize = cpu_to_le16(i | maxp);
+ }
+
/*
* Some buggy high speed devices have bulk endpoints using
* maxpacket sizes other than 512. High speed HCDs may not
@@ -293,9 +356,6 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
*/
if (to_usb_device(ddev)->speed == USB_SPEED_HIGH
&& usb_endpoint_xfer_bulk(d)) {
- unsigned maxp;
-
- maxp = usb_endpoint_maxp(&endpoint->desc) & 0x07ff;
if (maxp != 512)
dev_warn(ddev, "config %d interface %d altsetting %d "
"bulk endpoint 0x%X has invalid maxpacket %d\n",
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index e9f5043a2..50b6baa50 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -241,7 +241,8 @@ static int usbdev_mmap(struct file *file, struct vm_area_struct *vma)
goto error_decrease_mem;
}
- mem = usb_alloc_coherent(ps->dev, size, GFP_USER, &dma_handle);
+ mem = usb_alloc_coherent(ps->dev, size, GFP_USER | __GFP_NOWARN,
+ &dma_handle);
if (!mem) {
ret = -ENOMEM;
goto error_free_usbm;
@@ -1708,11 +1709,17 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb
as->urb->start_frame = uurb->start_frame;
as->urb->number_of_packets = number_of_packets;
as->urb->stream_id = stream_id;
- if (uurb->type == USBDEVFS_URB_TYPE_ISO ||
- ps->dev->speed == USB_SPEED_HIGH)
- as->urb->interval = 1 << min(15, ep->desc.bInterval - 1);
- else
- as->urb->interval = ep->desc.bInterval;
+
+ if (ep->desc.bInterval) {
+ if (uurb->type == USBDEVFS_URB_TYPE_ISO ||
+ ps->dev->speed == USB_SPEED_HIGH ||
+ ps->dev->speed >= USB_SPEED_SUPER)
+ as->urb->interval = 1 <<
+ min(15, ep->desc.bInterval - 1);
+ else
+ as->urb->interval = ep->desc.bInterval;
+ }
+
as->urb->context = as;
as->urb->complete = async_completed;
for (totlen = u = 0; u < number_of_packets; u++) {
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index bee135176..1d5fc32d0 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1052,14 +1052,11 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
/* Continue a partial initialization */
if (type == HUB_INIT2 || type == HUB_INIT3) {
- device_lock(hub->intfdev);
+ device_lock(&hdev->dev);
/* Was the hub disconnected while we were waiting? */
- if (hub->disconnected) {
- device_unlock(hub->intfdev);
- kref_put(&hub->kref, hub_release);
- return;
- }
+ if (hub->disconnected)
+ goto disconnected;
if (type == HUB_INIT2)
goto init2;
goto init3;
@@ -1262,7 +1259,7 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
queue_delayed_work(system_power_efficient_wq,
&hub->init_work,
msecs_to_jiffies(delay));
- device_unlock(hub->intfdev);
+ device_unlock(&hdev->dev);
return; /* Continues at init3: below */
} else {
msleep(delay);
@@ -1281,12 +1278,12 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
/* Scan all ports that need attention */
kick_hub_wq(hub);
- /* Allow autosuspend if it was suppressed */
- if (type <= HUB_INIT3)
+ if (type == HUB_INIT2 || type == HUB_INIT3) {
+ /* Allow autosuspend if it was suppressed */
+ disconnected:
usb_autopm_put_interface_async(to_usb_interface(hub->intfdev));
-
- if (type == HUB_INIT2 || type == HUB_INIT3)
- device_unlock(hub->intfdev);
+ device_unlock(&hdev->dev);
+ }
kref_put(&hub->kref, hub_release);
}
@@ -1315,8 +1312,6 @@ static void hub_quiesce(struct usb_hub *hub, enum hub_quiescing_type type)
struct usb_device *hdev = hub->hdev;
int i;
- cancel_delayed_work_sync(&hub->init_work);
-
/* hub_wq and related activity won't re-trigger */
hub->quiescing = 1;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-29 05:50:49 +0000