Re: [PATCH 2/2] gpio: max732x: Fix possible NULL pointer dereference on i2c_new_dummy error

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Thu, Mar 6, 2014 at 10:31 AM, Krzysztof Kozlowski
<k.kozlowski@xxxxxxxxxxx> wrote:

> In max732x_probe() driver allocates dummy I2C device (if number of ports
> is greater than 8) with i2c_new_dummy() but it does not check the return
> value of this call.
>
> In case of error (i2c_new_device(): memory allocation failure or I2C
> address cannot be used) this function returns NULL which is later
> dereferenced by i2c_smbus_read_byte() (called from max732x_readb()).
>
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>

Patch applied.

Yours,
Linus Walleij
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