diff options
Diffstat (limited to 'sys-kernel_arch-sources-g14_files-8021-mt76-mt7921-fix-the-inconsistent-state-between-bind-and-unbind.patch')
| -rw-r--r-- | sys-kernel_arch-sources-g14_files-8021-mt76-mt7921-fix-the-inconsistent-state-between-bind-and-unbind.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sys-kernel_arch-sources-g14_files-8021-mt76-mt7921-fix-the-inconsistent-state-between-bind-and-unbind.patch b/sys-kernel_arch-sources-g14_files-8021-mt76-mt7921-fix-the-inconsistent-state-between-bind-and-unbind.patch new file mode 100644 index 000000000000..c1a9eabc6f02 --- /dev/null +++ b/sys-kernel_arch-sources-g14_files-8021-mt76-mt7921-fix-the-inconsistent-state-between-bind-and-unbind.patch @@ -0,0 +1,46 @@ +From: <sean.wang@mediatek.com> +To: <nbd@nbd.name>, <lorenzo.bianconi@redhat.com> +CC: <sean.wang@mediatek.com>, <Soul.Huang@mediatek.com>, + <YN.Chen@mediatek.com>, <Leon.Yen@mediatek.com>, + <Eric-SY.Chang@mediatek.com>, <Deren.Wu@mediatek.com>, <km.lin@mediatek.com>, + <robin.chiu@mediatek.com>, <ch.yeh@mediatek.com>, <posh.sun@mediatek.com>, + <Eric.Liang@mediatek.com>, <Stella.Chang@mediatek.com>, <jemele@google.com>, + <linux-wireless@vger.kernel.org>, <linux-mediatek@lists.infradead.org> +Subject: [PATCH] mt76: mt7921: fix the inconsistent state between bind and + unbind +Date: Mon, 23 Aug 2021 10:26:51 +0800 + +From: Sean Wang <sean.wang@mediatek.com> + +We shouldn't put back the device into fw own state after wifi reset at +driver unbind stage to fix the following error because that is not the +consistent state the current driver bind stage expects. + +localhost ~ # echo 0000:01:00.0 > /sys/bus/pci/drivers/mt7921e/unbind +localhost ~ # echo 0000:01:00.0 > /sys/bus/pci/drivers/mt7921e/bind +... +[ 481.172969] mt7921e 0000:01:00.0: ASIC revision: feed0000 +[ 482.133547] mt7921e: probe of 0000:01:00.0 failed with error -110 +-bash: echo: write error: No such device + +Fixes: c1af184ba830 ("mt76: mt7921: fix dma hang in rmmod") +Co-developed-by: YN Chen <YN.Chen@mediatek.com> +Signed-off-by: YN Chen <YN.Chen@mediatek.com> +Signed-off-by: Sean Wang <sean.wang@mediatek.com> +Tested-by: Chen-Yu Tsai <wenst@chromium.org> +--- + drivers/net/wireless/mediatek/mt76/mt7921/init.c | 1 - + 1 file changed, 1 deletion(-) + +diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/init.c b/drivers/net/wireless/mediatek/mt76/mt7921/init.c +index 1f37e64b6038..3e84ef8f5358 100644 +--- a/drivers/net/wireless/mediatek/mt76/mt7921/init.c ++++ b/drivers/net/wireless/mediatek/mt76/mt7921/init.c +@@ -279,7 +279,6 @@ void mt7921_unregister_device(struct mt7921_dev *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); |