Re: linux-4.11-rc1/drivers/gpu/drm/exynos/exynos5433_drm_decon.c:681: suspicious mask ?

[Inki Dae]

Hello David,

Thanks for report.

2017ë 03ì 06ì 19:05ì David Binderman ì(ê) ì ê:
> Hello there,
> 
> linux-4.11-rc1/drivers/gpu/drm/exynos/exynos5433_drm_decon.c:681]: (warning) Result of operator '|' is always true if one operand is non-zero. Did you intend to use '&'?
> 

Right. this is known issue and below patch fixes this,
http://www.spinics.net/lists/dri-devel/msg132589.html

This patch will go to -fixes.

> Source code is
> 
>     if (ctx->out_type | I80_HW_TRG) {
> 
> Also in the same file:
> 
> [drivers/gpu/drm/exynos/exynos5433_drm_decon.c:131]: (style) Same expression on both sides of '|'.
> 
> Source code is
> 
>        writel(TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN
>                | TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN,

In this case, only problem is two flags are set in duplicate. This should be cleaned up. Thanks. :)

> 
> Regards
> 
> David Binderman
> 
>