shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-05 10:31:46 +09:00
Code Issues Packages Projects Releases Wiki Activity

wifi: mt76: mt7921e: stop chip reset worker in unregister hook

Browse Source 
[ Upstream commit 3d78c46423 ]

If the chip reset worker is triggered during the remove process, the chip
DMA may not be properly pushed back to the idle state. This can lead to
corruption of the DMA flow due to the chip reset. Therefore, it is
necessary to stop the chip reset before the DMA is finalized.

To avoid resetting the chip after the reset worker is cancelled, use
__mt7921_mcu_drv_pmctrl() instead of mt7921_mcu_drv_pmctrl(). It is safe to
ignore the pm mutex because the pm worker and wake worker have already been
cancelled.

Fixes: 033ae79b38 ("mt76: mt7921: refactor init.c to be bus independent")
Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Co-developed-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Co-developed-by: Wang Zhao <wang.zhao@mediatek.com>
Signed-off-by: Wang Zhao <wang.zhao@mediatek.com>
Signed-off-by: Quan Zhou <quan.zhou@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Quan Zhou
2023-04-13 05:11:14 +08:00
committed by Greg Kroah-Hartman
parent 741bf262bd
commit d365e14483
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/mediatek/mt76/mt7921/pci.c
View File

@@ -111,9 +111,10 @@ static void mt7921e_unregister_device(struct mt7921_dev *dev)
napi_disable(&dev->mt76.napi[i]);
cancel_delayed_work_sync(&pm->ps_work);
cancel_work_sync(&pm->wake_work);
cancel_work_sync(&dev->reset_work);
mt7921_tx_token_put(dev);
mt7921_mcu_drv_pmctrl(dev);
__mt7921_mcu_drv_pmctrl(dev);
mt7921_dma_cleanup(dev);
mt7921_wfsys_reset(dev);
skb_queue_purge(&dev->mt76.mcu.res_q);