[PATCH] drm: panel: himax-hx8279: avoid using an uninitialized variable

[Dmitry Baryshkov]

On Wed, Apr 23, 2025 at 06:32:07PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd at arndb.de>
> 
> goa_even_valid is only initialized in one branch but not the other:
> 
> drivers/gpu/drm/panel/panel-himax-hx8279.c:838:6: error: variable 'goa_even_valid' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
>   838 |         if (num_zero == ARRAY_SIZE(desc->goa_even_timing))
>       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/gpu/drm/panel/panel-himax-hx8279.c:842:23: note: uninitialized use occurs here
>   842 |         if (goa_odd_valid != goa_even_valid)
>       |                              ^~~~~~~~~~~~~~
> 
> Change the initialization to set it to the value of the condition instead.
> 
> Fixes: 38d42c261389 ("drm: panel: Add driver for Himax HX8279 DDIC panels")
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>
> ---
>  drivers/gpu/drm/panel/panel-himax-hx8279.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at oss.qualcomm.com>
> 

-- 
With best wishes
Dmitry