linux-kernel - [PATCH v1 1/2] media: i2c: hi846: check return value of regulator_bulk

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Message-Id: <20211109131013.2684058-2-martin.kepplinger@puri.sm>
Date:   Tue,  9 Nov 2021 14:10:12 +0100
From:   Martin Kepplinger <martin.kepplinger@...i.sm>
To:     sakari.ailus@...ux.intel.com, mchehab@...nel.org
Cc:     linux-media@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...i.sm,
        Martin Kepplinger <martin.kepplinger@...i.sm>
Subject: [PATCH v1 1/2] media: i2c: hi846: check return value of regulator_bulk_disable()

regulator_bulk_disable can fail and thus suspend() can. Handle that error
gracefully.

Signed-off-by: Martin Kepplinger <martin.kepplinger@...i.sm>
---
 drivers/media/i2c/hi846.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/media/i2c/hi846.c b/drivers/media/i2c/hi846.c
index 4b94bdf2e5cb..ed55c3894284 100644
--- a/drivers/media/i2c/hi846.c
+++ b/drivers/media/i2c/hi846.c
@@ -1858,7 +1858,7 @@ static int hi846_power_on(struct hi846 *hi846)
 	return ret;
 }
 
-static void hi846_power_off(struct hi846 *hi846)
+static int hi846_power_off(struct hi846 *hi846)
 {
 	if (hi846->rst_gpio)
 		gpiod_set_value_cansleep(hi846->rst_gpio, 1);
@@ -1867,7 +1867,7 @@ static void hi846_power_off(struct hi846 *hi846)
 		gpiod_set_value_cansleep(hi846->shutdown_gpio, 1);
 
 	clk_disable_unprepare(hi846->clock);
-	regulator_bulk_disable(HI846_NUM_SUPPLIES, hi846->supplies);
+	return regulator_bulk_disable(HI846_NUM_SUPPLIES, hi846->supplies);
 }
 
 static int __maybe_unused hi846_suspend(struct device *dev)
@@ -1879,9 +1879,7 @@ static int __maybe_unused hi846_suspend(struct device *dev)
 	if (hi846->streaming)
 		hi846_stop_streaming(hi846);
 
-	hi846_power_off(hi846);
-
-	return 0;
+	return hi846_power_off(hi846);
 }
 
 static int __maybe_unused hi846_resume(struct device *dev)
-- 
2.30.2