| commit | dcf40b739ed328a82ef6620c7b505a8209c0f009 | |
| author | Alan Stern <stern@rowland.harvard.edu> | |
| Mon, 29 Jun 2009 15:04:54 +0000 (29 11:04 -0400) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Thu, 30 Jul 2009 21:39:13 +0000 (30 14:39 -0700) | ||
| tree | fa8c2623fbe15490983224880adcf1f06a4d6fb6 | treesnapshot (tar.gz zip) |
| parent | 15362af40d0f6708e8a88f58651d122f973ba1d0 | commitdiff |
USB: handle zero-length usbfs submissions correctly
commit 9180135bc80ab11199d482b6111e23f74d65af4a upstream.
This patch (as1262) fixes a bug in usbfs: It refuses to accept
zero-length transfers, and it insists that the buffer pointer be valid
even if there is no data being transferred.
The patch also consolidates a bunch of repetitive access_ok() checks
into a single check, which incidentally fixes the lack of such a check
for Isochronous URBs.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 9180135bc80ab11199d482b6111e23f74d65af4a upstream.
This patch (as1262) fixes a bug in usbfs: It refuses to accept
zero-length transfers, and it insists that the buffer pointer be valid
even if there is no data being transferred.
The patch also consolidates a bunch of repetitive access_ok() checks
into a single check, which incidentally fixes the lack of such a check
for Isochronous URBs.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/usb/core/devio.c | diffblobblamehistory |