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| author |   Jussi Kivilinna <jussi.kivilinna@mbnet.fi> | 2011-01-31 20:47:08 +0200 |
|---|---|---|
| committer |   John W. Linville <linville@tuxdriver.com> | 2011-02-04 16:29:48 -0500 |
| commit | 78fc800f06a72c25842e585fd747fa6a98f3f0e5 (patch) | |
| tree | 2c71d432229c54b0efb3103f04815c9f74e9ca1b /drivers/net/wireless/zd1211rw/zd_chip.c | |
| parent | mac80211: Add testing functionality for TKIP (diff) | |
| download | linux-dev-78fc800f06a72c25842e585fd747fa6a98f3f0e5.tar.xz linux-dev-78fc800f06a72c25842e585fd747fa6a98f3f0e5.zip | |
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>
Diffstat (limited to 'drivers/net/wireless/zd1211rw/zd_chip.c')
0 files changed, 0 insertions, 0 deletions