Jonathan Hunter e34a9de325 ASoC: tegra-alt: Check if pinctrl state is NULL ...

If the pinctrl node is not present in device-tree for the DMIC, DSPK
or I2S, then the pinctrl states will not be initialised during device
probe. This can cause the kernel to crash by attempting to dereference
a NULL pointer when setting the pinctrl state. Fix this by verifying
that the pinctrl state is not an error pointer or NULL before attempting
to use it.

Bug 1665446

Change-Id: I917141325f12bbf87371eb59a320fe08e65f0934
Signed-off-by: Jonathan Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2120320
(cherry picked from commit f3aa620e26af45a6bafe5acb65f2b06df0b877e8)
Reviewed-on: https://git-master.nvidia.com/r/2122730
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2022-09-29 15:30:21 +05:30

..

soc

ASoC: tegra-alt: Check if pinctrl state is NULL

2022-09-29 15:30:21 +05:30