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xHCI bug fixes for 3.7

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Hi Greg,
 
 Here's three small bug fixes for 3.7.  They fix a NULL pointer deference
 and lost USB device unplug events, as well as making sure the xHCI
 driver doesn't prevent system suspend.
 
 Sarah Sharp
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Merge tag 'for-usb-next-2012-09-25' of git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci into usb-next

xHCI bug fixes for 3.7

Hi Greg,

Here's three small bug fixes for 3.7.  They fix a NULL pointer deference
and lost USB device unplug events, as well as making sure the xHCI
driver doesn't prevent system suspend.

Sarah Sharp
This commit is contained in:
Greg Kroah-Hartman 2012-09-25 15:34:17 -07:00
commit 655db79805
4 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -103,6 +103,7 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
* PPT chipsets.
*/
xhci->quirks |= XHCI_SPURIOUS_REBOOT;
xhci->quirks |= XHCI_AVOID_BEI;
}
if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
pdev->device == PCI_DEVICE_ID_ASROCK_P67) {

4
drivers/usb/host/xhci-ring.c
View File

@ -3672,7 +3672,9 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
} else {
td->last_trb = ep_ring->enqueue;
field |= TRB_IOC;
if (xhci->hci_version == 0x100) {
if (xhci->hci_version == 0x100 &&
!(xhci->quirks &
XHCI_AVOID_BEI)) {
/* Set BEI bit except for the last td */
if (i < num_tds - 1)
field |= TRB_BEI;

4
drivers/usb/host/xhci.c
View File

@ -471,6 +471,8 @@ static bool compliance_mode_recovery_timer_quirk_check(void)
dmi_product_name = dmi_get_system_info(DMI_PRODUCT_NAME);
dmi_sys_vendor = dmi_get_system_info(DMI_SYS_VENDOR);
if (!dmi_product_name || !dmi_sys_vendor)
return false;
if (!(strstr(dmi_sys_vendor, "Hewlett-Packard")))
return false;
@ -888,7 +890,7 @@ int xhci_suspend(struct xhci_hcd *xhci)
command &= ~CMD_RUN;
xhci_writel(xhci, command, &xhci->op_regs->command);
if (handshake(xhci, &xhci->op_regs->status,
STS_HALT, STS_HALT, 100*100)) {
STS_HALT, STS_HALT, XHCI_MAX_HALT_USEC)) {
xhci_warn(xhci, "WARN: xHC CMD_RUN timeout\n");
spin_unlock_irq(&xhci->lock);
return -ETIMEDOUT;

1
drivers/usb/host/xhci.h
View File

@ -1511,6 +1511,7 @@ struct xhci_hcd {
#define XHCI_INTEL_HOST (1 << 12)
#define XHCI_SPURIOUS_REBOOT (1 << 13)
#define XHCI_COMP_MODE_QUIRK (1 << 14)
#define XHCI_AVOID_BEI (1 << 15)
unsigned int num_active_eps;
unsigned int limit_active_eps;
/* There are two roothubs to keep track of bus suspend info for */