diff mbox series

[v2] wifi: mt76: mt7921: fix PCI DMA hang after reboot

Message ID 9f4a25c54dc68c941fbbd864e56e1b78868a5a9a.1676342819.git.deren.wu@mediatek.com
State Superseded
Headers show
Series [v2] wifi: mt76: mt7921: fix PCI DMA hang after reboot | expand

Commit Message

Deren Wu Feb. 14, 2023, 2:49 a.m. UTC
mt7921 just stop some workers and clean up chip status before reboot.
In stress test, there are working activities still running at the period
of .shutdown callback and that would cause some hosts cannot recover
DMA after reboot. To avoid the floating state in reboot, we use
mt7921_pci_remove() to fully deinit all resources.

Fixes: f23a0cea8bd6 ("wifi: mt76: mt7921e: add pci .shutdown() support")
Signed-off-by: Deren Wu <deren.wu@mediatek.com>

---
v2: add Fixes tag
---
 drivers/net/wireless/mediatek/mt76/mt7921/pci.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
index cb72ded37256..1a8a54a46dcc 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
@@ -509,17 +509,7 @@  static int mt7921_pci_resume(struct device *device)
 
 static void mt7921_pci_shutdown(struct pci_dev *pdev)
 {
-	struct mt76_dev *mdev = pci_get_drvdata(pdev);
-	struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
-	struct mt76_connac_pm *pm = &dev->pm;
-
-	cancel_delayed_work_sync(&pm->ps_work);
-	cancel_work_sync(&pm->wake_work);
-
-	/* chip cleanup before reboot */
-	mt7921_mcu_drv_pmctrl(dev);
-	mt7921_dma_cleanup(dev);
-	mt7921_wfsys_reset(dev);
+	mt7921_pci_remove(pdev);
 }
 
 static DEFINE_SIMPLE_DEV_PM_OPS(mt7921_pm_ops, mt7921_pci_suspend, mt7921_pci_resume);