xhci: Treat not finding the event_seg on COMP_STOP the same as COMP_STOP_INVAL
authorHans de Goede <hdegoede@redhat.com>
Tue, 19 Aug 2014 12:17:56 +0000 (15:17 +0300)
committerZefan Li <lizefan@huawei.com>
Thu, 25 Sep 2014 03:49:14 +0000 (11:49 +0800)
commit42494f024b957baa879f35bacb8b2353253ea7b8
treeeb47e8b1afca84d73957f0cc38b0d76647acf3fa
parentd232e2cabf543a2a36361110e89d82a535b4be1a
xhci: Treat not finding the event_seg on COMP_STOP the same as COMP_STOP_INVAL

commit 9a54886342e227433aebc9d374f8ae268a836475 upstream.

When using a Renesas uPD720231 chipset usb-3 uas to sata bridge with a 120G
Crucial M500 ssd, model string: Crucial_ CT120M500SSD1, together with a
the integrated Intel xhci controller on a Haswell laptop:

00:14.0 USB controller [0c03]: Intel Corporation 8 Series USB xHCI HC [8086:9c31] (rev 04)

The following error gets logged to dmesg:

xhci error: Transfer event TRB DMA ptr not part of current TD

Treating COMP_STOP the same as COMP_STOP_INVAL when no event_seg gets found
fixes this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>
drivers/usb/host/xhci-ring.c