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From: cgel.zte@gmail.com
To: sean@poorly.run, quic_abhinavk@quicinc.com
Cc: daniel.thompson@linaro.org, airlied@linux.ie,
	linux-arm-msm@vger.kernel.org, lv.ruyi@zte.com.cn,
	linmq006@gmail.com, dri-devel@lists.freedesktop.org,
	swboyd@chromium.org, christophe.jaillet@wanadoo.fr,
	dmitry.baryshkov@linaro.org, freedreno@lists.freedesktop.org,
	Zeal Robot <zealci@zte.com.cn>,
	linux-kernel@vger.kernel.org,
	angelogioacchino.delregno@collabora.com
Subject: [PATCH] drm/msm/hdmi: fix error check return value of irq_of_parse_and_map()
Date: Mon, 25 Apr 2022 09:18:31 +0000	[thread overview]
Message-ID: <20220425091831.3500487-1-lv.ruyi@zte.com.cn> (raw)

From: Lv Ruyi <lv.ruyi@zte.com.cn>

The irq_of_parse_and_map() function returns 0 on failure, and does not
return a negative value anyhow, so never enter this conditional branch.

Fixes: f6a8eaca0ea1 ("drm/msm/mdp5: use irqdomains")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
---
 drivers/gpu/drm/msm/hdmi/hdmi.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index ec324352e862..c3b661c2932d 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -298,9 +298,9 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
 	drm_connector_attach_encoder(hdmi->connector, hdmi->encoder);
 
 	hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
-	if (hdmi->irq < 0) {
-		ret = hdmi->irq;
-		DRM_DEV_ERROR(dev->dev, "failed to get irq: %d\n", ret);
+	if (!hdmi->irq) {
+		ret = -EINVAL;
+		DRM_DEV_ERROR(dev->dev, "failed to get irq\n");
 		goto fail;
 	}
 
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: cgel.zte@gmail.com
To: sean@poorly.run, quic_abhinavk@quicinc.com
Cc: robdclark@gmail.com, airlied@linux.ie, daniel@ffwll.ch,
	dmitry.baryshkov@linaro.org, swboyd@chromium.org,
	angelogioacchino.delregno@collabora.com,
	daniel.thompson@linaro.org, linmq006@gmail.com,
	christophe.jaillet@wanadoo.fr, lv.ruyi@zte.com.cn,
	linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
	freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	Zeal Robot <zealci@zte.com.cn>
Subject: [PATCH] drm/msm/hdmi: fix error check return value of irq_of_parse_and_map()
Date: Mon, 25 Apr 2022 09:18:31 +0000	[thread overview]
Message-ID: <20220425091831.3500487-1-lv.ruyi@zte.com.cn> (raw)

From: Lv Ruyi <lv.ruyi@zte.com.cn>

The irq_of_parse_and_map() function returns 0 on failure, and does not
return a negative value anyhow, so never enter this conditional branch.

Fixes: f6a8eaca0ea1 ("drm/msm/mdp5: use irqdomains")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
---
 drivers/gpu/drm/msm/hdmi/hdmi.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index ec324352e862..c3b661c2932d 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -298,9 +298,9 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
 	drm_connector_attach_encoder(hdmi->connector, hdmi->encoder);
 
 	hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
-	if (hdmi->irq < 0) {
-		ret = hdmi->irq;
-		DRM_DEV_ERROR(dev->dev, "failed to get irq: %d\n", ret);
+	if (!hdmi->irq) {
+		ret = -EINVAL;
+		DRM_DEV_ERROR(dev->dev, "failed to get irq\n");
 		goto fail;
 	}
 
-- 
2.25.1


             reply	other threads:[~2022-04-25  9:18 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-25  9:18 cgel.zte [this message]
2022-04-25  9:18 ` [PATCH] drm/msm/hdmi: fix error check return value of irq_of_parse_and_map() cgel.zte
2022-04-25 20:11 ` Stephen Boyd
2022-04-25 20:11   ` Stephen Boyd
2022-04-25 21:11   ` Dmitry Baryshkov
2022-04-25 21:11     ` Dmitry Baryshkov

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