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| author | Qii Wang <[email protected]> | 2021-05-27 12:04:04 +0000 |
|---|---|---|
| committer | Wolfram Sang <[email protected]> | 2021-05-28 08:13:07 +0000 |
| commit | fed1bd51a504eb96caa38b4f13ab138fc169ea75 (patch) | |
| tree | 2cc001ac183f789f2690ebd21eb4a9924db18f1d /drivers/media/v4l2-core/v4l2-async.c | |
| parent | i2c: i801: Don't generate an interrupt on bus reset (diff) | |
| download | kernel-fed1bd51a504eb96caa38b4f13ab138fc169ea75.tar.gz kernel-fed1bd51a504eb96caa38b4f13ab138fc169ea75.zip | |
i2c: mediatek: Disable i2c start_en and clear intr_stat brfore reset
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.
Fixes: aafced673c06("i2c: mediatek: move dma reset before i2c reset")
Signed-off-by: Qii Wang <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-async.c')
0 files changed, 0 insertions, 0 deletions