diff options
| author | Olav Kongas <ok@artecdesign.ee> | 2005-10-17 14:30:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-17 14:45:49 -0700 |
| commit | e9b765decfb49ddc105d303d491e1bee9769436f (patch) | |
| tree | 16fdd136b112a86c4313436e83a51549346db40c /drivers/usb/host | |
| parent | 2cc78eb52bc1ae89f0a4fa5a00eb998dffde4a9f (diff) | |
[PATCH] isp116x-hcd: fix handling of short transfers
Increased use of scatter-gather by usb-storage driver after 2.6.13 has
exposed a buggy codepath in isp116x-hcd, which was probably never
visited before: bug happened only for those urbs, for which
URB_SHORT_NOT_OK was set AND short transfer occurred.
The fix attached was tested in 2 ways: (a) it fixed failing
initialization of a flash drive with an embedded hub; (b) the fix was
tested with 'usbtest' against a modified g_zero driver (on top of
net2280), which generated short bulk IN transfers of various lengths
including multiples and non-multiples of max_packet_length.
Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/isp116x-hcd.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c index 41bbae83fc7..e142056b0d2 100644 --- a/drivers/usb/host/isp116x-hcd.c +++ b/drivers/usb/host/isp116x-hcd.c @@ -326,7 +326,8 @@ static void postproc_atl_queue(struct isp116x *isp116x) usb_settoggle(udev, ep->epnum, ep->nextpid == USB_PID_OUT, - PTD_GET_TOGGLE(ptd) ^ 1); + PTD_GET_TOGGLE(ptd)); + urb->actual_length += PTD_GET_COUNT(ptd); urb->status = cc_to_error[TD_DATAUNDERRUN]; spin_unlock(&urb->lock); continue; |