On Fri 15 Jan 05:02 CST 2021, Dmitry Baryshkov wrote:
> Return NULL pointer from get_edid() callback rather than ERR_PTR()
> pointer, as DRM code does NULL checks rather than IS_ERR(). Also while
> we are at it, return NULL if getting EDID timed out.
>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> Fixes: 0cbbd5b1a012 ("drm: bridge: add support for lontium LT9611UXC bridge")
> ---
> drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
> index a59e811f1705..b708700e182d 100644
> --- a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
> +++ b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
> @@ -505,7 +505,10 @@ static struct edid *lt9611uxc_bridge_get_edid(struct drm_bridge *bridge,
> ret = lt9611uxc_wait_for_edid(lt9611uxc);
> if (ret < 0) {
> dev_err(lt9611uxc->dev, "wait for EDID failed: %d\n", ret);
> - return ERR_PTR(ret);
> + return NULL;
> + } else if (ret == 0) {
> + dev_err(lt9611uxc->dev, "wait for EDID timeout\n");
> + return NULL;
> }
>
> return drm_do_get_edid(connector, lt9611uxc_get_edid_block, lt9611uxc);
> --
> 2.29.2
>
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