linux-kernel - [PATCH] coresight: cti: remove incorrect NULL return check

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Message-Id: <20200507053547.13707-1-calvin.johnson@oss.nxp.com>
Date:   Thu,  7 May 2020 11:05:47 +0530
From:   Calvin Johnson <calvin.johnson@....nxp.com>
To:     Mike Leach <mike.leach@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux.cj@...il.com
Cc:     Calvin Johnson <calvin.johnson@....nxp.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] coresight: cti: remove incorrect NULL return check

fwnode_find_reference() doesn't return NULL and hence that check
should be avoided.

Signed-off-by: Calvin Johnson <calvin.johnson@....nxp.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@...aro.org>
---

 drivers/hwtracing/coresight/coresight-cti-platform.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-cti-platform.c b/drivers/hwtracing/coresight/coresight-cti-platform.c
index b44d83142b62..2fdaeec80ee5 100644
--- a/drivers/hwtracing/coresight/coresight-cti-platform.c
+++ b/drivers/hwtracing/coresight/coresight-cti-platform.c
@@ -120,7 +120,7 @@ static int cti_plat_create_v8_etm_connection(struct device *dev,
 
 	/* Can optionally have an etm node - return if not  */
 	cs_fwnode = fwnode_find_reference(root_fwnode, CTI_DT_CSDEV_ASSOC, 0);
-	if (IS_ERR_OR_NULL(cs_fwnode))
+	if (IS_ERR(cs_fwnode))
 		return 0;
 
 	/* allocate memory */
@@ -393,7 +393,7 @@ static int cti_plat_create_connection(struct device *dev,
 		/* associated device ? */
 		cs_fwnode = fwnode_find_reference(fwnode,
 						  CTI_DT_CSDEV_ASSOC, 0);
-		if (!IS_ERR_OR_NULL(cs_fwnode)) {
+		if (!IS_ERR(cs_fwnode)) {
 			assoc_name = cti_plat_get_csdev_or_node_name(cs_fwnode,
 								     &csdev);
 			fwnode_handle_put(cs_fwnode);
-- 
2.17.1