[PATCH 1/2] thermal: intel: powerclamp: Simplify duration_get()

[Thorsten Blum <blum@kernel.org>]

Use guard(mutex) and return the result of sysfs_emit() directly to
simplify the code. Also use %u to format the unsigned duration.

Signed-off-by: Thorsten Blum <blum@kernel.org>
---
 drivers/thermal/intel/intel_powerclamp.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/thermal/intel/intel_powerclamp.c b/drivers/thermal/intel/intel_powerclamp.c
index bd7fd98dc310..8ceb1270646c 100644
--- a/drivers/thermal/intel/intel_powerclamp.c
+++ b/drivers/thermal/intel/intel_powerclamp.c
@@ -103,13 +103,9 @@ static int duration_set(const char *arg, const struct kernel_param *kp)
 
 static int duration_get(char *buf, const struct kernel_param *kp)
 {
-	int ret;
+	guard(mutex)(&powerclamp_lock);
 
-	mutex_lock(&powerclamp_lock);
-	ret = sysfs_emit(buf, "%d\n", duration / 1000);
-	mutex_unlock(&powerclamp_lock);
-
-	return ret;
+	return sysfs_emit(buf, "%u\n", duration / 1000);
 }
 
 static const struct kernel_param_ops duration_ops = {