diff options
Diffstat (limited to 'mt76-mt7921-fix-dma-hang-in-rmmod.patch')
| -rw-r--r-- | mt76-mt7921-fix-dma-hang-in-rmmod.patch | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/mt76-mt7921-fix-dma-hang-in-rmmod.patch b/mt76-mt7921-fix-dma-hang-in-rmmod.patch deleted file mode 100644 index 7b353ab3e5eb..000000000000 --- a/mt76-mt7921-fix-dma-hang-in-rmmod.patch +++ /dev/null @@ -1,55 +0,0 @@ -From: Deren Wu <Deren.Wu@mediatek.com> -To: Felix Fietkau <nbd@nbd.name>, Lorenzo Bianconi - <lorenzo.bianconi@redhat.com> -CC: Sean Wang <sean.wang@mediatek.com>, Soul Huang <Soul.Huang@mediatek.com>, - YN Chen <YN.Chen@mediatek.com>, Leon Yen <Leon.Yen@mediatek.com>, "Eric-SY - Chang" <Eric-SY.Chang@mediatek.com>, Deren Wu <Deren.Wu@mediatek.com>, - KM Lin <km.lin@mediatek.com>, Robin Chiu <robin.chiu@mediatek.com>, CH Yeh - <ch.yeh@mediatek.com>, Posh Sun <posh.sun@mediatek.com>, Eric Liang - <Eric.Liang@mediatek.com>, Stella Chang <Stella.Chang@mediatek.com>, Jimmy Hu - <Jimmy.Hu@mediatek.com>, <jemele@google.com>, <yenlinlai@google.com>, - linux-wireless <linux-wireless@vger.kernel.org>, linux-mediatek - <linux-mediatek@lists.infradead.org>, Deren Wu <deren.wu@mediatek.com> -Subject: [PATCH] mt76: mt7921: fix dma hang in rmmod -Date: Tue, 27 Jul 2021 17:47:09 +0800 - -From: Deren Wu <deren.wu@mediatek.com> - -The dma would be broken after rmmod flow. There are two different -cases causing this issue. -1. dma access without privilege. -2. hw access sequence borken by another context. - -This patch handle both cases to avoid hw crash. - -Fixes: 2b9ea5a8cf1bd ("mt76: mt7921: add mt7921_dma_cleanup in mt7921_unregister_device") -Signed-off-by: Deren Wu <deren.wu@mediatek.com> ---- - drivers/net/wireless/mediatek/mt76/mt7921/init.c | 10 ++++++++++ - 1 file changed, 10 insertions(+) - -diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/init.c b/drivers/net/wireless/mediatek/mt76/mt7921/init.c -index 49725caca7ed..1f37e64b6038 100644 ---- a/drivers/net/wireless/mediatek/mt76/mt7921/init.c -+++ b/drivers/net/wireless/mediatek/mt76/mt7921/init.c -@@ -266,10 +266,20 @@ int mt7921_register_device(struct mt7921_dev *dev) - - void mt7921_unregister_device(struct mt7921_dev *dev) - { -+ int i; -+ struct mt76_connac_pm *pm = &dev->pm; -+ - mt76_unregister_device(&dev->mt76); -+ mt76_for_each_q_rx(&dev->mt76, i) -+ napi_disable(&dev->mt76.napi[i]); -+ cancel_delayed_work_sync(&pm->ps_work); -+ cancel_work_sync(&pm->wake_work); -+ - mt7921_tx_token_put(dev); -+ mt7921_mcu_drv_pmctrl(dev); - mt7921_dma_cleanup(dev); - mt7921_mcu_exit(dev); -+ mt7921_mcu_fw_pmctrl(dev); - - tasklet_disable(&dev->irq_tasklet); - mt76_free_device(&dev->mt76); |