[PATCH v4 04/14] drm: WARN when calling drm_format_info() for an unsupported format

[Tomi Valkeinen]

On 08/09/16 17:44, Laurent Pinchart wrote:
> The format helpers have historically treated unsupported formats as part
> of the default case, returning values that are likely wrong. We can't
> change this behaviour now without risking breaking drivers in difficult
> to detect ways, but we can WARN on unsupported formats to catch faulty
> callers.
> 
> The only exception is the framebuffer_check() function that calls
> drm_format_info() to validate the format passed from userspace. This is
> a valid use case that shouldn't generate a warning.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> ---
>  drivers/gpu/drm/drm_fourcc.c      | 32 ++++++++++++++++++++++++--------
>  drivers/gpu/drm/drm_framebuffer.c |  2 +-
>  include/drm/drm_fourcc.h          |  1 +
>  3 files changed, 26 insertions(+), 9 deletions(-)

Reviewed-by: Tomi Valkeinen <tomi.valkeinen at ti.com>

 Tomi

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