[PATCH v2] mfd: mt6360: add bound check in regmap read/write function

[Lee Jones]

On Thu, 29 Sep 2022, cy_huang wrote:

> From: ChiYuan Huang <cy_huang at richtek.com>
> 
> Fix the potential risk for null pointer if bank index is over the maximum.
> 
> Refer to the discussion list for the experiment result on mt6370.
> https://lore.kernel.org/all/20220914013345.GA5802@cyhuang-hp-elitebook-840-g3.rt/
> If not to check the bound, there is the same issue on mt6360.
> 
> Fixes: 3b0850440a06c (mfd: mt6360: Merge different sub-devices I2C read/write)
> Cc: stable at vger.kernel.org
> Signed-off-by: ChiYuan Huang <cy_huang at richtek.com>
> ---
> Since v2:
> - Assign i2c bank variable after bank index is already checked.
> 
> ---
>  drivers/mfd/mt6360-core.c | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)

Applied, thanks.

-- 
Lee Jones [李琼斯]