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

On Thu, 29 Sep 2022, cy_huang wrote:

From: ChiYuan Huang cy_huang@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-g... 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@vger.kernel.org Signed-off-by: ChiYuan Huang cy_huang@richtek.com

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Since v2:

• Assign i2c bank variable after bank index is already checked.

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drivers/mfd/mt6360-core.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)

Applied, thanks.