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[07/10] pmdomain: qcom: rpmhpd: Simplify locking with guard()

Message ID 20240823-cleanup-h-guard-pm-domain-v1-7-8320722eaf39@linaro.org
State Accepted
Commit 005d29ac591a8d3cf0fb6f34c2045d0690992148
Headers show
Series pmdomain: Simplify with cleanup.h | expand

Commit Message

Krzysztof Kozlowski Aug. 23, 2024, 12:51 p.m. UTC 
Simplify error handling (less gotos) over locks with guard().

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/pmdomain/qcom/rpmhpd.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

Comments

Konrad Dybcio Aug. 27, 2024, 9:48 a.m. UTC | #1 
On 23.08.2024 2:51 PM, Krzysztof Kozlowski wrote:
> Simplify error handling (less gotos) over locks with guard().
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> ---

Reviewed-by: Konrad Dybcio <konradybcio@kernel.org>

Konrad
diff mbox series

Patch

diff --git a/drivers/pmdomain/qcom/rpmhpd.c b/drivers/pmdomain/qcom/rpmhpd.c
index d2cb4271a1ca..65505e1e2219 100644
--- a/drivers/pmdomain/qcom/rpmhpd.c
+++ b/drivers/pmdomain/qcom/rpmhpd.c
@@ -1,6 +1,7 @@ 
 // SPDX-License-Identifier: GPL-2.0
 /* Copyright (c) 2018, The Linux Foundation. All rights reserved.*/
 
+#include <linux/cleanup.h>
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -775,9 +776,9 @@  static int rpmhpd_set_performance_state(struct generic_pm_domain *domain,
 					unsigned int level)
 {
 	struct rpmhpd *pd = domain_to_rpmhpd(domain);
-	int ret = 0, i;
+	int ret, i;
 
-	mutex_lock(&rpmhpd_lock);
+	guard(mutex)(&rpmhpd_lock);
 
 	for (i = 0; i < pd->level_count; i++)
 		if (level <= pd->level[i])
@@ -797,14 +798,12 @@  static int rpmhpd_set_performance_state(struct generic_pm_domain *domain,
 
 		ret = rpmhpd_aggregate_corner(pd, i);
 		if (ret)
-			goto out;
+			return ret;
 	}
 
 	pd->corner = i;
-out:
-	mutex_unlock(&rpmhpd_lock);
 
-	return ret;
+	return 0;
 }
 
 static int rpmhpd_update_level_mapping(struct rpmhpd *rpmhpd)