From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org
Cc: Jernej Skrabec <jernej.skrabec@siol.net>,
Jonas Karlman <jonas@kwiboo.se>, David Airlie <airlied@linux.ie>,
Neil Armstrong <narmstrong@baylibre.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Andrzej Hajda <a.hajda@samsung.com>,
Vinod Koul <vkoul@kernel.org>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
Sam Ravnborg <sam@ravnborg.org>
Subject: [PATCH v4 2/3] drm/bridge/lontium-lt9611uxc: fix get_edid return code
Date: Fri, 22 Jan 2021 02:33:02 +0300 [thread overview]
Message-ID: <20210121233303.1221784-3-dmitry.baryshkov@linaro.org> (raw)
In-Reply-To: <20210121233303.1221784-1-dmitry.baryshkov@linaro.org>
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: 0cbbd5b1a012 ("drm: bridge: add support for lontium LT9611UXC bridge")
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
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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next prev parent reply other threads:[~2021-01-22 8:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-21 23:33 [PATCH v4 0/3] drm/bridge/lontium-lt9611uxc: fix handling of EDID/HPD Dmitry Baryshkov
2021-01-21 23:33 ` [PATCH v4 1/3] drm/bridge/lontium-lt9611uxc: fix waiting for EDID to become available Dmitry Baryshkov
2021-01-22 9:27 ` Andrzej Hajda
2021-01-21 23:33 ` Dmitry Baryshkov [this message]
2021-01-22 9:28 ` [PATCH v4 2/3] drm/bridge/lontium-lt9611uxc: fix get_edid return code Andrzej Hajda
2021-01-21 23:33 ` [PATCH v4 3/3] drm/bridge/lontium-lt9611uxc: move HPD notification out of IRQ handler Dmitry Baryshkov
2021-01-22 9:34 ` Andrzej Hajda
2021-01-28 11:24 ` Andrzej Hajda
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