On Fri, May 28, 2021 at 09:37:43AM +0800, Qii Wang wrote:

On Thu, 2021-05-27 at 22:14 +0200, Wolfram Sang wrote:

quoted

On Thu, May 27, 2021 at 08:04:04PM +0800, qii.wang@mediatek.com wrote:

quoted

From: Qii Wang <qii.wang@mediatek.com>

The i2c controller driver do dma reset after transfer timeout,
but sometimes dma reset will trigger an unexpected DMA_ERR irq.
It will cause the i2c controller to continuously send interrupts
to the system and cause soft lock-up. So we need to disable i2c
start_en and clear intr_stat to stop i2c controller before dma
reset when transfer timeout.

Signed-off-by: Qii Wang <qii.wang@mediatek.com>

Is there a suitable Fixes tag for this?

Can you help to add the following tag, thanks
Fixes: aafced673c06("i2c: mediatek: move dma reset before i2c reset")

Added this tag and applied to for-current, thanks!