From: zhong jiang <zhongjiang@huawei.com>
Date: Wed, 30 Oct 2019 01:57:53 +0000 (+0800)
Subject: drm/amd/display: remove redundant null pointer check before kfree
X-Git-Tag: for-linus-20191205~71^2~19^2~1
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=5e8f5477f9d2819ea949dec4e9a68a34c7810989;p=linux-2.6-block.git

drm/amd/display: remove redundant null pointer check before kfree

kfree has taken null pointer into account. hence it is safe to remove
the unnecessary check.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
index cf6ef387e5d2..6f730b5bfe42 100644
--- a/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
+++ b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
@@ -174,9 +174,7 @@ static bool hdmi_14_process_transaction(
 			link->ctx,
 			link,
 			&i2c_command);
-
-	if (buff)
-		kfree(buff);
+	kfree(buff);
 
 	return result;
 }