linux-kernel - [PATCH V2 1/6] PM / QOS: Add default case to the switch

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Message-Id: <338b16e4c882634e30e4f4c011a9e9c52d134cbc.1486611268.git.viresh.kumar@linaro.org>
Date:   Thu,  9 Feb 2017 09:11:47 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Rafael Wysocki <rjw@...ysocki.net>, khilman@...libre.com,
        ulf.hansson@...aro.org, Len Brown <len.brown@...el.com>,
        Pavel Machek <pavel@....cz>
Cc:     linaro-kernel@...ts.linaro.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        sboyd@...eaurora.org, nm@...com, robh+dt@...nel.org,
        lina.iyer@...aro.org, rnayak@...eaurora.org,
        Viresh Kumar <viresh.kumar@...aro.org>
Subject: [PATCH V2 1/6] PM / QOS: Add default case to the switch

The switch block handles all the QOS request types present today, but
starts giving compilation warnings as soon as a new type is added and
not handled in this.

To prevent against that, add the default case as well and do a WARN from
it.

Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
 drivers/base/power/qos.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c
index 58fcc758334e..01f615b18055 100644
--- a/drivers/base/power/qos.c
+++ b/drivers/base/power/qos.c
@@ -621,6 +621,9 @@ static void __dev_pm_qos_drop_user_request(struct device *dev,
 		req = dev->power.qos->flags_req;
 		dev->power.qos->flags_req = NULL;
 		break;
+	default:
+		WARN_ON(1);
+		return;
 	}
 	__dev_pm_qos_remove_request(req);
 	kfree(req);
-- 
2.7.1.410.g6faf27b