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Revert "xhci: Avoid infinite loop when sg urb requires too many trbs"

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This reverts commit d6c9ea9069af684358efedcaf2f2f687f51c58ee.

We are ripping out commit 35773dac5f862cb1c82ea151eba3e2f6de51ec3e "usb:
xhci: Link TRB must not occur within a USB payload burst" because it's a
hack that caused regressions in the usb-storage and userspace USB
drivers that use usbfs and libusb.  This commit attempted to fix the
issues with that patch.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org # 3.12
This commit is contained in:
Sarah Sharp 2014-01-31 11:51:59 -08:00
parent 1386ff7579
commit 9cf00d9170
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/host/xhci-ring.c
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@ -3002,7 +3002,7 @@ static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring,
if (num_trbs >= TRBS_PER_SEGMENT) {
xhci_err(xhci, "Too many fragments %d, max %d\n",
num_trbs, TRBS_PER_SEGMENT - 1);
return -EINVAL;
return -ENOMEM;
}
nop_cmd = cpu_to_le32(TRB_TYPE(TRB_TR_NOOP) |