diff options
| author | Shengzhen Li <szli@marvell.com> | 2016-11-18 19:30:24 +0530 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2016-11-19 09:18:46 +0200 |
| commit | eb2428fb1a21e7c813987118b0296135ddec0f24 (patch) | |
| tree | f470b971d48de4bc9c46b9367b4e34eb60006036 /drivers/net/wireless/marvell/mwifiex/main.h | |
| parent | 853402a0082315f6c4f38feeba2c6c81a393557c (diff) | |
| download | lwn-eb2428fb1a21e7c813987118b0296135ddec0f24.tar.gz lwn-eb2428fb1a21e7c813987118b0296135ddec0f24.zip | |
mwifiex: check tx_hw_pending before downloading sleep confirm
We may get SLEEP event from firmware even if TXDone interrupt
for last Tx packet is still pending. In this case, we may
end up accessing PCIe memory for handling TXDone after power
save handshake is completed. This causes kernel crash with
external abort.
This patch will only allow downloading sleep confirm
when no tx done interrupt is pending in the hardware.
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Shengzhen Li <szli@marvell.com>
Tested-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/marvell/mwifiex/main.h')
| -rw-r--r-- | drivers/net/wireless/marvell/mwifiex/main.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/wireless/marvell/mwifiex/main.h b/drivers/net/wireless/marvell/mwifiex/main.h index ae5afe5829ea..904a2edefc06 100644 --- a/drivers/net/wireless/marvell/mwifiex/main.h +++ b/drivers/net/wireless/marvell/mwifiex/main.h @@ -857,6 +857,7 @@ struct mwifiex_adapter { atomic_t rx_pending; atomic_t tx_pending; atomic_t cmd_pending; + atomic_t tx_hw_pending; struct workqueue_struct *workqueue; struct work_struct main_work; struct workqueue_struct *rx_workqueue; |