Bug#910366: linux: ath9k-htc on OHCI -> bogus usb xfer
Package: linux
Version: 4.9.110-1
Tags: patch
This is regression, on older (3.x) kernels, it used to work:
On my USB 1.1 port I cannot use my USB WLAN adaptor anymore
(TL-WN722N with hostapd).
When I remove the following lines, everything is fine again:
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 3d27477..a317e1e 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -443,11 +443,6 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
* cause problems in HCDs if they get it wrong.
*/
- /* Check that the pipe's type matches the endpoint's type */
- if (usb_pipetype(urb->pipe) != pipetypes[xfertype])
- dev_WARN(&dev->dev, "BOGUS urb xfer, pipe %x != type %x\n",
- usb_pipetype(urb->pipe), pipetypes[xfertype]);
-
/* Check against a simple/standard policy */
allowed = (URB_NO_TRANSFER_DMA_MAP | URB_NO_INTERRUPT | URB_DIR_MASK |
URB_FREE_BUFFER);
Thanks to Alexey Brodkin for finding the culprit.
See here:
https://lists.openwrt.org/pipermail/openwrt-devel/2016-July/001723.html
and here:
http://lists.infradead.org/pipermail/linux-snps-arc/2016-July/001310.html
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