commit: cf840551a884360841bd3d3ce1ad0868ff0b759a From: Andiry Xu <[email protected]> Date: Wed, 18 Jan 2012 17:47:12 +0800 Subject: xHCI: Cleanup isoc transfer ring when TD length mismatch found
When a TD length mismatch is found during isoc TRB enqueue, it directly returns -EINVAL. However, isoc transfer is partially enqueued at this time, and the ring should be cleared. This should be backported to kernels as old as 2.6.36, which contain the commit 522989a27c7badb608155b1f1dea3487ed431f74 "xhci: Fix failed enqueue in the middle of isoch TD." Signed-off-by: Andiry Xu <[email protected]> Signed-off-by: Sarah Sharp <[email protected]> Cc: [email protected] --- drivers/usb/host/xhci-ring.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 5a818cb..b62037b 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -3324,7 +3324,8 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags, /* Check TD length */ if (running_total != td_len) { xhci_err(xhci, "ISOC TD length unmatch\n"); - return -EINVAL; + ret = -EINVAL; + goto cleanup; } } -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
