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37 lines
1.2 KiB
Diff
37 lines
1.2 KiB
Diff
From cd49375db5c05acb824fa18ae9d19290073cda08 Mon Sep 17 00:00:00 2001
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From: Sandor Yu <Sandor.yu@nxp.com>
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Date: Wed, 20 Jan 2021 11:07:32 +0800
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Subject: [PATCH 25/49] LF-3268: drm: cdns-hdmi: fix Coverity Issue: 11566403
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Check return value to fix Coverity Issue: 11566403.
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Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
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Reviewed-by: Robby Cai <robby.cai@nxp.com>
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---
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drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c b/drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c
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index df8ac87b3a54..28193178140f 100644
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--- a/drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c
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+++ b/drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c
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@@ -119,10 +119,13 @@ ssize_t HDCPTX_Status_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct cdns_mhdp_device *mhdp = dev_get_drvdata(dev);
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- int value;
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+ int value, ret;
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if (count == 2) {
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- sscanf(buf, "%d", &value);
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+ ret = sscanf(buf, "%d", &value);
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+ if (ret != 1)
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+ return -EINVAL;
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+
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if ((value >= HDCP_STATE_NO_AKSV) && (value <= HDCP_STATE_AUTH_FAILED)) {
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mhdp->hdcp.state = value;
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return count;
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--
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2.29.2
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