diff options
| author | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2009-07-27 21:04:01 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-07-28 23:31:12 +0200 |
| commit | fcf8f576beafb8c5db8aee8a73eb73763fa7b0ad (patch) | |
| tree | 43251e12846cc8b974348c67bba0c4e28c309c20 /drivers/usb | |
| parent | USB: xhci: Don't oops if the host doesn't halt. (diff) | |
| download | linux-fcf8f576beafb8c5db8aee8a73eb73763fa7b0ad.tar.xz linux-fcf8f576beafb8c5db8aee8a73eb73763fa7b0ad.zip | |
USB: xhci: Check if the host controller died in IRQ handler.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/xhci-hcd.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c index 8c3a074a95cd..008326d5bc52 100644 --- a/drivers/usb/host/xhci-hcd.c +++ b/drivers/usb/host/xhci-hcd.c @@ -277,6 +277,9 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd) /* Check if the xHC generated the interrupt, or the irq is shared */ temp = xhci_readl(xhci, &xhci->op_regs->status); temp2 = xhci_readl(xhci, &xhci->ir_set->irq_pending); + if (temp == 0xffffffff && temp2 == 0xffffffff) + goto hw_died; + if (!(temp & STS_EINT) && !ER_IRQ_PENDING(temp2)) { spin_unlock(&xhci->lock); return IRQ_NONE; @@ -294,6 +297,7 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd) if (temp & STS_FATAL) { xhci_warn(xhci, "WARNING: Host System Error\n"); xhci_halt(xhci); +hw_died: xhci_to_hcd(xhci)->state = HC_STATE_HALT; spin_unlock(&xhci->lock); return -ESHUTDOWN; |