linux-kernel - [PATCH 2/6] coresight: core: Fix use of uninitialized pointer

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Date:   Mon, 14 Jun 2021 11:58:57 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     gregkh@...uxfoundation.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/6] coresight: core: Fix use of uninitialized pointer

From: Junhao He <hejunhao2@...ilicon.com>

Currently the pointer "sink" might be checked before initialized. Fix
this by initializing this pointer.

Link: https://lore.kernel.org/r/1620912469-52222-2-git-send-email-liuqi115@huawei.com
Signed-off-by: Junhao He <hejunhao2@...ilicon.com>
Signed-off-by: Qi Liu <liuqi115@...wei.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
Fixes: 6d578258b955 ("coresight: Make sysfs functional on topologies with per core sink")
Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
---
 drivers/hwtracing/coresight/coresight-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
index a7971c68b0be..20ea4aa619f0 100644
--- a/drivers/hwtracing/coresight/coresight-core.c
+++ b/drivers/hwtracing/coresight/coresight-core.c
@@ -608,7 +608,7 @@ static struct coresight_device *
 coresight_find_enabled_sink(struct coresight_device *csdev)
 {
 	int i;
-	struct coresight_device *sink;
+	struct coresight_device *sink = NULL;
 
 	if ((csdev->type == CORESIGHT_DEV_TYPE_SINK ||
 	     csdev->type == CORESIGHT_DEV_TYPE_LINKSINK) &&
-- 
2.25.1