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From: Abhinav Kumar <abhinavk@codeaurora.org>
To: dri-devel@lists.freedesktop.org
Cc: linux-arm-msm@vger.kernel.org,
	Abhinav Kumar <abhinavk@codeaurora.org>,
	swboyd@chromium.org, khsieh@codeaurora.org,
	seanpaul@chromium.org, tanmay@codeaurora.org,
	aravindh@codeaurora.org, freedreno@lists.freedesktop.org,
	dan.carpenter@oracle.com
Subject: [PATCH 2/3] drm/msm/dp: Fix incorrect NULL check kbot warnings in DP driver
Date: Fri,  5 Mar 2021 11:17:18 -0800
Message-ID: <1614971839-2686-2-git-send-email-abhinavk@codeaurora.org> (raw)
In-Reply-To: <1614971839-2686-1-git-send-email-abhinavk@codeaurora.org>

Fix an incorrect NULL check reported by kbot in the MSM DP driver

smatch warnings:
drivers/gpu/drm/msm/dp/dp_hpd.c:37 dp_hpd_connect()
error: we previously assumed 'hpd_priv->dp_cb' could be null
(see line 37)

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
---
 drivers/gpu/drm/msm/dp/dp_hpd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_hpd.c b/drivers/gpu/drm/msm/dp/dp_hpd.c
index 5b8fe3202..e1c90fa 100644
--- a/drivers/gpu/drm/msm/dp/dp_hpd.c
+++ b/drivers/gpu/drm/msm/dp/dp_hpd.c
@@ -34,8 +34,8 @@ int dp_hpd_connect(struct dp_usbpd *dp_usbpd, bool hpd)
 
 	dp_usbpd->hpd_high = hpd;
 
-	if (!hpd_priv->dp_cb && !hpd_priv->dp_cb->configure
-				&& !hpd_priv->dp_cb->disconnect) {
+	if (!hpd_priv->dp_cb || !hpd_priv->dp_cb->configure
+				|| !hpd_priv->dp_cb->disconnect) {
 		pr_err("hpd dp_cb not initialized\n");
 		return -EINVAL;
 	}
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

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Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-05 19:17 [PATCH 1/3] drm/msm/dp: Fix indentation " Abhinav Kumar
2021-03-05 19:17 ` Abhinav Kumar [this message]
2021-03-26  1:17   ` [PATCH 2/3] drm/msm/dp: Fix incorrect NULL check " Stephen Boyd
2021-03-05 19:17 ` [PATCH 3/3] drm/msm/dp: delete unnecessary debugfs error handling Abhinav Kumar
2021-03-26  1:18   ` Stephen Boyd
2021-03-26  1:17 ` [PATCH 1/3] drm/msm/dp: Fix indentation kbot warnings in DP driver Stephen Boyd

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