linux-kernel - [PATCH 3/3] coresight: etm4x: core: Remove redundant check of attr

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Date:   Thu, 13 May 2021 21:27:49 +0800
From:   Qi Liu <liuqi115@...wei.com>
To:     <mathieu.poirier@...aro.org>, <suzuki.poulose@....com>,
        <mike.leach@...aro.org>
CC:     <coresight@...ts.linaro.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <linuxarm@...wei.com>
Subject: [PATCH 3/3] coresight: etm4x: core: Remove redundant check of attr

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

"attr" is checked by perf framework, so remove the redundant check in
etm4_parse_event_config().

Signed-off-by: Junhao He <hejunhao2@...ilicon.com>
Signed-off-by: Qi Liu <liuqi115@...wei.com>
---
 drivers/hwtracing/coresight/coresight-etm4x-core.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c
index db88199..da27cd4 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c
@@ -568,11 +568,6 @@ static int etm4_parse_event_config(struct etmv4_drvdata *drvdata,
 	struct etmv4_config *config = &drvdata->config;
 	struct perf_event_attr *attr = &event->attr;
 
-	if (!attr) {
-		ret = -EINVAL;
-		goto out;
-	}
-
 	/* Clear configuration from previous run */
 	memset(config, 0, sizeof(struct etmv4_config));
 
-- 
2.7.4