linux/drivers/net/wireless/zd1211rw
Jussi Kivilinna 78fc800f06 zd1211rw: use urb anchors for tx and fix tx-queue disabling
When stress testing AP-mode I hit OOPS when unpluging or rmmodding
driver.

It appears that when tx-queue is disabled, tx-urbs might be left pending.
These can cause ehci to call non-existing tx_urb_complete() (after rmmod)
or uninitialized/reseted private structure (after disconnect()). Add skb
queue for submitted packets and unlink pending urbs on zd_usb_disable_tx().

Part of the problem seems to be usb->free_urb_list that isn't always
working as it should, causing machine freeze when trying to free the list
in zd_usb_disable_tx(). Caching free urbs isn't what other drivers seem
to be doing (usbnet for example) so strip free_usb_list.

Patch makes tx-urb handling saner with use of urb anchors.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-04 16:29:48 -05:00
..
Kconfig
Makefile
zd_chip.c Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2010-11-29 11:19:09 -08:00
zd_chip.h
zd_def.h
zd_mac.c workqueue: convert cancel_rearming_delayed_work[queue]() users to cancel_delayed_work_sync() 2010-12-15 10:56:11 +01:00
zd_mac.h Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2010-06-17 14:19:06 -07:00
zd_rf_al2230.c
zd_rf_al7230b.c
zd_rf_rf2959.c
zd_rf_uw2453.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
zd_rf.c
zd_rf.h
zd_usb.c zd1211rw: use urb anchors for tx and fix tx-queue disabling 2011-02-04 16:29:48 -05:00
zd_usb.h zd1211rw: use urb anchors for tx and fix tx-queue disabling 2011-02-04 16:29:48 -05:00