Linux-libre 4.5.3-gnupck-4.5.3-gnu

10 files changed, 68 insertions, 12 deletions

diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 9eb1cff28..b8b580e5a 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -74,6 +74,15 @@ static void for_each_companion(struct pci_dev *pdev, struct usb_hcd *hcd,
 		if (companion->bus != pdev->bus ||
 				PCI_SLOT(companion->devfn) != slot)
 			continue;
+
+		/*
+		 * Companion device should be either UHCI,OHCI or EHCI host
+		 * controller, otherwise skip.
+		 */
+		if (companion->class != CL_UHCI && companion->class != CL_OHCI &&
+				companion->class != CL_EHCI)
+			continue;
+
 		companion_hcd = pci_get_drvdata(companion);
 		if (!companion_hcd || !companion_hcd->self.root_hub)
 			continue;
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index cf43e9e18..79d895c2d 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -646,6 +646,7 @@ static void ffs_user_copy_worker(struct work_struct *work)
 						   work);
 	int ret = io_data->req->status ? io_data->req->status :
 					 io_data->req->actual;
+	bool kiocb_has_eventfd = io_data->kiocb->ki_flags & IOCB_EVENTFD;
 
 	if (io_data->read && ret > 0) {
 		use_mm(io_data->mm);
@@ -657,13 +658,11 @@ static void ffs_user_copy_worker(struct work_struct *work)
 
 	io_data->kiocb->ki_complete(io_data->kiocb, ret, ret);
 
-	if (io_data->ffs->ffs_eventfd &&
-	    !(io_data->kiocb->ki_flags & IOCB_EVENTFD))
+	if (io_data->ffs->ffs_eventfd && !kiocb_has_eventfd)
 		eventfd_signal(io_data->ffs->ffs_eventfd, 1);
 
 	usb_ep_free_request(io_data->ep, io_data->req);
 
-	io_data->kiocb->private = NULL;
 	if (io_data->read)
 		kfree(io_data->to_free);
 	kfree(io_data->buf);
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 5cd080e0a..743d9a20e 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1873,6 +1873,12 @@ no_bw:
 	kfree(xhci->rh_bw);
 	kfree(xhci->ext_caps);
 
+	xhci->usb2_ports = NULL;
+	xhci->usb3_ports = NULL;
+	xhci->port_array = NULL;
+	xhci->rh_bw = NULL;
+	xhci->ext_caps = NULL;
+
 	xhci->page_size = 0;
 	xhci->page_shift = 0;
 	xhci->bus_state[0].bus_suspended = 0;
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index f0640b7a1..48672fac7 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -48,6 +48,7 @@
 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI		0xa12f
 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI	0x9d2f
 #define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI		0x0aa8
+#define PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI		0x1aa8
 
 static const char hcd_name[] = "xhci_hcd";
 
@@ -155,7 +156,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 		(pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
 		 pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
 		 pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
-		 pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI)) {
+		 pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI ||
+		 pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI)) {
 		xhci->quirks |= XHCI_PME_STUCK_QUIRK;
 	}
 	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
@@ -302,6 +304,7 @@ static void xhci_pci_remove(struct pci_dev *dev)
 	struct xhci_hcd *xhci;
 
 	xhci = hcd_to_xhci(pci_get_drvdata(dev));
+	xhci->xhc_state |= XHCI_STATE_REMOVING;
 	if (xhci->shared_hcd) {
 		usb_remove_hcd(xhci->shared_hcd);
 		usb_put_hcd(xhci->shared_hcd);
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index d39d6bf1d..d4962208b 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -39,12 +39,25 @@ static const struct xhci_driver_overrides xhci_plat_overrides __initconst = {
 
 static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)
 {
+	struct usb_hcd *hcd = xhci_to_hcd(xhci);
+
 	/*
 	 * As of now platform drivers don't provide MSI support so we ensure
 	 * here that the generic code does not try to make a pci_dev from our
 	 * dev struct in order to setup MSI
 	 */
 	xhci->quirks |= XHCI_PLAT;
+
+	/*
+	 * On R-Car Gen2 and Gen3, the AC64 bit (bit 0) of HCCPARAMS1 is set
+	 * to 1. However, these SoCs don't support 64-bit address memory
+	 * pointers. So, this driver clears the AC64 bit of xhci->hcc_params
+	 * to call dma_set_coherent_mask(dev, DMA_BIT_MASK(32)) in
+	 * xhci_gen_setup().
+	 */
+	if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2) ||
+	    xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN3))
+		xhci->quirks |= XHCI_NO_64BIT_SUPPORT;
 }
 
 /* called during probe() after chip reset completes */
diff --git a/drivers/usb/host/xhci-plat.h b/drivers/usb/host/xhci-plat.h
index 5a2e2e393..529c3c40f 100644
--- a/drivers/usb/host/xhci-plat.h
+++ b/drivers/usb/host/xhci-plat.h
@@ -14,7 +14,7 @@
 #include "xhci.h"	/* for hcd_to_xhci() */
 
 enum xhci_plat_type {
-	XHCI_PLAT_TYPE_MARVELL_ARMADA,
+	XHCI_PLAT_TYPE_MARVELL_ARMADA = 1,
 	XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2,
 	XHCI_PLAT_TYPE_RENESAS_RCAR_GEN3,
 };
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 3915657e6..a85a1c993 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -4014,7 +4014,8 @@ static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd,
 	int reserved_trbs = xhci->cmd_ring_reserved_trbs;
 	int ret;
 
-	if (xhci->xhc_state) {
+	if ((xhci->xhc_state & XHCI_STATE_DYING) ||
+		(xhci->xhc_state & XHCI_STATE_HALTED)) {
 		xhci_dbg(xhci, "xHCI dying or halted, can't queue_command\n");
 		return -ESHUTDOWN;
 	}
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 0c8087d3c..8e713cca5 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -147,7 +147,8 @@ static int xhci_start(struct xhci_hcd *xhci)
 				"waited %u microseconds.\n",
 				XHCI_MAX_HALT_USEC);
 	if (!ret)
-		xhci->xhc_state &= ~(XHCI_STATE_HALTED | XHCI_STATE_DYING);
+		/* clear state flags. Including dying, halted or removing */
+		xhci->xhc_state = 0;
 
 	return ret;
 }
@@ -1108,8 +1109,8 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
 		/* Resume root hubs only when have pending events. */
 		status = readl(&xhci->op_regs->status);
 		if (status & STS_EINT) {
-			usb_hcd_resume_root_hub(hcd);
 			usb_hcd_resume_root_hub(xhci->shared_hcd);
+			usb_hcd_resume_root_hub(hcd);
 		}
 	}
 
@@ -1124,10 +1125,10 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
 
 	/* Re-enable port polling. */
 	xhci_dbg(xhci, "%s: starting port polling.\n", __func__);
-	set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
-	usb_hcd_poll_rh_status(hcd);
 	set_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags);
 	usb_hcd_poll_rh_status(xhci->shared_hcd);
+	set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
+	usb_hcd_poll_rh_status(hcd);
 
 	return retval;
 }
@@ -2770,7 +2771,8 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
 	if (ret <= 0)
 		return ret;
 	xhci = hcd_to_xhci(hcd);
-	if (xhci->xhc_state & XHCI_STATE_DYING)
+	if ((xhci->xhc_state & XHCI_STATE_DYING) ||
+		(xhci->xhc_state & XHCI_STATE_REMOVING))
 		return -ENODEV;
 
 	xhci_dbg(xhci, "%s called for udev %p\n", __func__, udev);
@@ -3817,7 +3819,7 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,
 
 	mutex_lock(&xhci->mutex);
 
-	if (xhci->xhc_state)	/* dying or halted */
+	if (xhci->xhc_state)	/* dying, removing or halted */
 		goto out;
 
 	if (!udev->slot_id) {
@@ -4944,6 +4946,16 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
 		return retval;
 	xhci_dbg(xhci, "Reset complete\n");
 
+	/*
+	 * On some xHCI controllers (e.g. R-Car SoCs), the AC64 bit (bit 0)
+	 * of HCCPARAMS1 is set to 1. However, the xHCs don't support 64-bit
+	 * address memory pointers actually. So, this driver clears the AC64
+	 * bit of xhci->hcc_params to call dma_set_coherent_mask(dev,
+	 * DMA_BIT_MASK(32)) in this xhci_gen_setup().
+	 */
+	if (xhci->quirks & XHCI_NO_64BIT_SUPPORT)
+		xhci->hcc_params &= ~BIT(0);
+
 	/* Set dma_mask and coherent_dma_mask to 64-bits,
 	 * if xHC supports 64-bit addressing */
 	if (HCC_64BIT_ADDR(xhci->hcc_params) &&
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index cc651383c..1cdea4a8c 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1596,6 +1596,7 @@ struct xhci_hcd {
  */
 #define XHCI_STATE_DYING	(1 << 0)
 #define XHCI_STATE_HALTED	(1 << 1)
+#define XHCI_STATE_REMOVING	(1 << 2)
 	/* Statistics */
 	int			error_bitmask;
 	unsigned int		quirks;
@@ -1632,6 +1633,7 @@ struct xhci_hcd {
 #define XHCI_PME_STUCK_QUIRK	(1 << 20)
 #define XHCI_MTK_HOST		(1 << 21)
 #define XHCI_SSIC_PORT_UNUSED	(1 << 22)
+#define XHCI_NO_64BIT_SUPPORT	(1 << 23)
 	unsigned int		num_active_eps;
 	unsigned int		limit_active_eps;
 	/* There are two roothubs to keep track of bus suspend info for */
diff --git a/drivers/usb/usbip/usbip_common.c b/drivers/usb/usbip/usbip_common.c
index facaaf003..e40da7759 100644
--- a/drivers/usb/usbip/usbip_common.c
+++ b/drivers/usb/usbip/usbip_common.c
@@ -741,6 +741,17 @@ int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb)
 	if (!(size > 0))
 		return 0;
 
+	if (size > urb->transfer_buffer_length) {
+		/* should not happen, probably malicious packet */
+		if (ud->side == USBIP_STUB) {
+			usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);
+			return 0;
+		} else {
+			usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
+			return -EPIPE;
+		}
+	}
+
 	ret = usbip_recv(ud->tcp_socket, urb->transfer_buffer, size);
 	if (ret != size) {
 		dev_err(&urb->dev->dev, "recv xbuf, %d\n", ret);