linux-kernel - [PATCH 5/5] coresight: Avoid casting void pointers

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Message-Id: <20200426185805.14923-6-swboyd@chromium.org>
Date:   Sun, 26 Apr 2020 11:58:05 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>
Subject: [PATCH 5/5] coresight: Avoid casting void pointers

We don't need to cast void pointers, such as the amba_id data. Assign to
a local variable to make the code prettier and also return NULL instead
of 0 to make sparse happy.

Cc: Suzuki K Poulose <suzuki.poulose@....com>
Cc: Mike Leach <mike.leach@...aro.org>
Signed-off-by: Stephen Boyd <swboyd@...omium.org>
---
 drivers/hwtracing/coresight/coresight-priv.h | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h
index 890f9a5c97c6..09ca9d824cee 100644
--- a/drivers/hwtracing/coresight/coresight-priv.h
+++ b/drivers/hwtracing/coresight/coresight-priv.h
@@ -206,9 +206,12 @@ cti_remove_assoc_from_csdev(struct coresight_device *csdev) {}
 /* extract the data value from a UCI structure given amba_id pointer. */
 static inline void *coresight_get_uci_data(const struct amba_id *id)
 {
-	if (id->data)
-		return ((struct amba_cs_uci_id *)(id->data))->data;
-	return 0;
+	struct amba_cs_uci_id *uci_id = id->data;
+
+	if (uci_id)
+		return id->data;
+
+	return NULL;
 }
 
 void coresight_release_platform_data(struct coresight_platform_data *pdata);
-- 
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