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drm/bridge/lontium-lt9611uxc: fix get_edid return code

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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.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Fixes: 0cbbd5b1a0 ("drm: bridge: add support for lontium LT9611UXC bridge")
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210121233303.1221784-3-dmitry.baryshkov@linaro.org
This commit is contained in:
Dmitry Baryshkov 2021-01-22 02:33:02 +03:00 committed by Andrzej Hajda
parent 053b1b287c
commit 1bb7ab402d
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/bridge/lontium-lt9611uxc.c
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@ -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);