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xhci: Bug fixes, now with more tags! 

Hi Greg,
 
 Here's five bug fixes for 3.12.
 
 The three patches are marked for stable.  Two fix NULL pointer dereferences.
 The third marked for stable suppresses some serious log spam from unnecessary
 xHCI driver warnings, whenever an isochronous short packet happens on an xHCI
 1.0 host.
 
 The other two patches fix build warnings.
 
 Sarah Sharp
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Merge tag 'for-usb-linus-2013-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci into usb-linus

Sarah writes:

xhci: Bug fixes, now with more tags!

Hi Greg,

Here's five bug fixes for 3.12.

The three patches are marked for stable.  Two fix NULL pointer dereferences.
The third marked for stable suppresses some serious log spam from unnecessary
xHCI driver warnings, whenever an isochronous short packet happens on an xHCI
1.0 host.

The other two patches fix build warnings.

Sarah Sharp
This commit is contained in:
Greg Kroah-Hartman 2013-07-25 10:02:24 -07:00
parent 63b5df963f d66eaf9f89
commit 00c5ec287a
4 changed files with 14 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/usb/host/pci-quirks.h
View File

@ -13,6 +13,7 @@ void usb_enable_xhci_ports(struct pci_dev *xhci_pdev);
void usb_disable_xhci_ports(struct pci_dev *xhci_pdev);
void sb800_prefetch(struct device *dev, int on);
#else
struct pci_dev;
static inline void usb_amd_quirk_pll_disable(void) {}
static inline void usb_amd_quirk_pll_enable(void) {}
static inline void usb_amd_dev_put(void) {}

1
drivers/usb/host/xhci-pci.c
View File

@ -93,7 +93,6 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
}
if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI) {
xhci->quirks |= XHCI_SPURIOUS_SUCCESS;
xhci->quirks |= XHCI_EP_LIMIT_QUIRK;
xhci->limit_active_eps = 64;
xhci->quirks |= XHCI_SW_BW_CHECKING;

2
drivers/usb/host/xhci-ring.c
View File

@ -434,7 +434,7 @@ static void ring_doorbell_for_active_rings(struct xhci_hcd *xhci,
/* A ring has pending URBs if its TD list is not empty */
if (!(ep->ep_state & EP_HAS_STREAMS)) {
if (!(list_empty(&ep->ring->td_list)))
if (ep->ring && !(list_empty(&ep->ring->td_list)))
xhci_ring_ep_doorbell(xhci, slot_id, ep_index, 0);
return;
}

17
drivers/usb/host/xhci.c
View File

@ -329,7 +329,7 @@ static void xhci_cleanup_msix(struct xhci_hcd *xhci)
return;
}
static void xhci_msix_sync_irqs(struct xhci_hcd *xhci)
static void __maybe_unused xhci_msix_sync_irqs(struct xhci_hcd *xhci)
{
int i;
@ -1181,9 +1181,6 @@ static int xhci_check_args(struct usb_hcd *hcd, struct usb_device *udev,
}
xhci = hcd_to_xhci(hcd);
if (xhci->xhc_state & XHCI_STATE_HALTED)
return -ENODEV;
if (check_virt_dev) {
if (!udev->slot_id || !xhci->devs[udev->slot_id]) {
printk(KERN_DEBUG "xHCI %s called with unaddressed "
@ -1199,6 +1196,9 @@ static int xhci_check_args(struct usb_hcd *hcd, struct usb_device *udev,
}
}
if (xhci->xhc_state & XHCI_STATE_HALTED)
return -ENODEV;
return 1;
}
@ -3898,7 +3898,7 @@ int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1)
* Issue an Evaluate Context command to change the Maximum Exit Latency in the
* slot context. If that succeeds, store the new MEL in the xhci_virt_device.
*/
static int xhci_change_max_exit_latency(struct xhci_hcd *xhci,
static int __maybe_unused xhci_change_max_exit_latency(struct xhci_hcd *xhci,
struct usb_device *udev, u16 max_exit_latency)
{
struct xhci_virt_device *virt_dev;
@ -4892,6 +4892,13 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
get_quirks(dev, xhci);
/* In xhci controllers which follow xhci 1.0 spec gives a spurious
* success event after a short transfer. This quirk will ignore such
* spurious event.
*/
if (xhci->hci_version > 0x96)
xhci->quirks |= XHCI_SPURIOUS_SUCCESS;
/* Make sure the HC is halted. */
retval = xhci_halt(xhci);
if (retval)