Re: [PATCH] dmaengine: dw: dmamux: Add NULL check in rzn1_dmamux_route_allocate()

[Krzysztof Kozlowski]

On 16/06/2025 12:48, Charles Han wrote:
> The function of_find_device_by_node() may return NULL if the device
> node cannot be found or CONFIG_OF is not defined, dereferencing
> it without NULL check may lead to NULL dereference.
> Add a check to verify whether the return value is NULL.
> 
> Fixes: 134d9c52fca2 ("dmaengine: dw: dmamux: Introduce RZN1 DMA router support")
> Signed-off-by: Charles Han <hanchunchao@xxxxxxxxxx>
> ---
>  drivers/dma/dw/rzn1-dmamux.c | 10 ++++++++--


Don't send patches for a subsystem patch by patch, but organize your
work correctly into patchset so we can reply in one thread (instead of
10) that you are fixing non-existing problems.

Best regards,
Krzysztof