On 03/12/2020 03:25, Qii Wang wrote:
On Wed, 2020-12-02 at 16:35 +0100, Wolfram Sang wrote:
Hi,
Some i2c device driver indirectly uses I2C driver when it is now
being suspended. The i2c devices driver is suspended during the
NOIRQ phase and this cannot be changed due to other dependencies.
Therefore, we also need to move the suspend handling for the I2C
controller driver to the NOIRQ phase as well.
Signed-off-by: Qii Wang <qii.wang@xxxxxxxxxxxx>
Is this a bugfix and should go into 5.10? Or can it wait for 5.11?
Yes, Can you help to apply it into 5.10? Thanks
To be honest if you still do have any i2c device which accessing i2c buss after _noirq
stage and your driver does not implement .master_xfer_atomic() - you definitely have a bigger problem.
So adding IRQF_NO_SUSPEND sound like a hack and probably works just by luck.
--
Best regards,
grygorii
