From: Ben Hutchings <[email protected]> Currently prepare_ring() returns -ENOMEM if the urb won't fit into a single ring segment. usb_sg_wait() treats this error as a temporary condition and will keep retrying until something else goes wrong.
The number of retries should be limited in usb_sg_wait(), but also prepare_ring() should not return an error code that suggests it might be worth retrying. Change it to -EINVAL. Reported-by: [email protected] References: http://bugs.debian.org/733907 Fixes: 35773dac5f86 ('usb: xhci: Link TRB must not occur within a USB payload burst') Cc: stable <[email protected]> # 3.12 Signed-off-by: Ben Hutchings <[email protected]> Signed-off-by: Sarah Sharp <[email protected]> --- drivers/usb/host/xhci-ring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 09b2b551be72..a0b248c34526 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -3000,7 +3000,7 @@ 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 -ENOMEM; + return -EINVAL; } nop_cmd = cpu_to_le32(TRB_TYPE(TRB_TR_NOOP) | -- 1.8.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
