[PATCH] pinctrl: single: fix potential NULL dereference in pcs_get_function()

[Linus Walleij]

On Thu, Aug 8, 2024 at 6:14 AM Ma Ke <make24 at iscas.ac.cn> wrote:

> pinmux_generic_get_function() can return NULL and the pointer 'function'
> was dereferenced without checking against NULL. Add checking of pointer
> 'function' in pcs_get_function().
>
> Found by code review.
>
> Cc: stable at vger.kernel.org
> Fixes: 571aec4df5b7 ("pinctrl: single: Use generic pinmux helpers for managing functions")
> Signed-off-by: Ma Ke <make24 at iscas.ac.cn>

Patch applied.

Yours,
Linus Walleij