diff options
| author | Jack Pham <jackp@codeaurora.org> | 2013-11-15 14:53:14 -0800 |
|---|---|---|
| committer | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2013-12-19 13:23:56 -0800 |
| commit | 9005355af23856c55a5538c9024355785424821b (patch) | |
| tree | da655a4b1999971ae717f6ce0550786bbee9b0ae /drivers/usb/host | |
| parent | 599459d8230bd6af9c354e00ad6608c43b6f7426 (diff) | |
| download | linux-9005355af23856c55a5538c9024355785424821b.tar.bz2 | |
usb: xhci: Check for XHCI_PLAT in xhci_cleanup_msix()
If CONFIG_PCI is enabled, make sure xhci_cleanup_msix()
doesn't try to free a bogus PCI IRQ or dereference an invalid
pci_dev when the xHCI device is actually a platform_device.
This patch should be backported to kernels as old as 3.9, that
contain the commit 52fb61250a7a132b0cfb9f4a1060a1f3c49e5a25
"xhci-plat: Don't enable legacy PCI interrupts."
Signed-off-by: Jack Pham <jackp@codeaurora.org>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/xhci.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 6bc966cfb60e..f8ffc512faf1 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -325,6 +325,9 @@ static void xhci_cleanup_msix(struct xhci_hcd *xhci) struct usb_hcd *hcd = xhci_to_hcd(xhci); struct pci_dev *pdev = to_pci_dev(hcd->self.controller); + if (xhci->quirks & XHCI_PLAT) + return; + xhci_free_irq(xhci); if (xhci->msix_entries) { |