linux-kernel - [PATCH v3 2/2] cpufreq: simplify setpolicy/target check in driver verification

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Message-Id: <20250822070424.166795-3-zhangzihuan@kylinos.cn>
Date: Fri, 22 Aug 2025 15:04:24 +0800
From: Zihuan Zhang <zhangzihuan@...inos.cn>
To: "rafael J . wysocki" <rafael@...nel.org>,
	Viresh Kumar <viresh.kumar@...aro.org>
Cc: zhenglifeng <zhenglifeng1@...wei.com>,
	linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Zihuan Zhang <zhangzihuan@...inos.cn>
Subject: [PATCH v3 2/2] cpufreq: simplify setpolicy/target check in driver verification

Cpufreq drivers are supposed to use either ->setpolicy or
->target/->target_index. This patch simplifies the existing check by
collapsing it into a single boolean expression:

    (!!driver->setpolicy == (driver->target_index || driver->target))

This is a readability/maintainability cleanup and keeps the semantics
unchanged.

No functional change intended.

Signed-off-by: Zihuan Zhang <zhangzihuan@...inos.cn>
---
 drivers/cpufreq/cpufreq.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index a067b5447fe8..633be16297d6 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2921,10 +2921,7 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
 		return -EPROBE_DEFER;
 
 	if (!driver_data || !driver_data->verify || !driver_data->init ||
-	    !(driver_data->setpolicy || driver_data->target_index ||
-		    driver_data->target) ||
-	     (driver_data->setpolicy && (driver_data->target_index ||
-		    driver_data->target)) ||
+	     (!!driver_data->setpolicy == (driver_data->target_index || driver_data->target)) ||
 	     (!driver_data->get_intermediate != !driver_data->target_intermediate) ||
 	     (!driver_data->online != !driver_data->offline) ||
 		 (driver_data->adjust_perf && !driver_data->fast_switch))
-- 
2.25.1