Skip to main content

Browse the archive

https://github.com/torvalds/linux
13 June 2022, 11:31:42 UTC
Revision 7dedacf4270a810fadcca887ac85d267b5f1882d authored by David Brownell on 05 August 2005, 01:06:41 UTC, committed by Linus Torvalds on 05 August 2005, 04:32:46 UTC 
[PATCH] USB: ehci: microframe handling fix
 
This patch has a one line oops fix, plus related cleanups.

 - The bugfix uses microframe scheduling data given to the hardware to
   test "is this a periodic QH", rather than testing for nonzero period.
   (Prevents an oops by providing the correct answer.)

 - The cleanup going along with the patch should make it clearer what's
   going on whenever those bitfields are accessed.

The bug came about when, around January, two new kinds of EHCI interrupt
scheduling operation were added, involving both the high speed (24 KBytes
per millisec) and low/full speed (1-64 bytes per millisec) microframe
scheduling.  A driver for the Edirol UA-1000 Audio Capture Unit ran into
the oops; it used one of the newly supported high speed modes.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent 003ba51
History
Tip revision: 7dedacf4270a810fadcca887ac85d267b5f1882d authored by David Brownell on 05 August 2005, 01:06:41 UTC
[PATCH] USB: ehci: microframe handling fix
Tip revision: 7dedacf
File Mode Size
Documentation
arch
crypto
drivers
fs
include
init
ipc
kernel
lib
mm
net
scripts
security
sound
usr
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 87.3 KB
MAINTAINERS -rw-r--r-- 57.3 KB
Makefile -rw-r--r-- 43.4 KB
README -rw-r--r-- 14.2 KB
REPORTING-BUGS -rw-r--r-- 2.9 KB

README

back to top