Thread (294 messages) 294 messages, 2 authors, 2021-07-19
STALE1821d

[PATCH 5.12 092/292] gpio: zynq: Check return value of pm_runtime_get_sync

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-07-19 17:59:54
Also in: lkml
Subsystem: gpio subsystem, the rest, xilinx gpio driver · Maintainers: Linus Walleij, Bartosz Golaszewski, Linus Torvalds, Shubhrajyoti Datta

From: Srinivas Neeli <redacted>

[ Upstream commit a51b2fb94b04ab71e53a71b9fad03fa826941254 ]

Return value of "pm_runtime_get_sync" API was neither captured nor checked.
Fixed it by capturing the return value and then checking for any warning.

Addresses-Coverity: "check_return"
Signed-off-by: Srinivas Neeli <redacted>
Signed-off-by: Bartosz Golaszewski <redacted>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpio/gpio-zynq.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c
index 3521c1dc3ac0..fb8684d70fe3 100644
--- a/drivers/gpio/gpio-zynq.c
+++ b/drivers/gpio/gpio-zynq.c
@@ -1001,8 +1001,11 @@ err_pm_dis:
 static int zynq_gpio_remove(struct platform_device *pdev)
 {
 	struct zynq_gpio *gpio = platform_get_drvdata(pdev);
+	int ret;
 
-	pm_runtime_get_sync(&pdev->dev);
+	ret = pm_runtime_get_sync(&pdev->dev);
+	if (ret < 0)
+		dev_warn(&pdev->dev, "pm_runtime_get_sync() Failed\n");
 	gpiochip_remove(&gpio->chip);
 	clk_disable_unprepare(gpio->clk);
 	device_set_wakeup_capable(&pdev->dev, 0);
-- 
2.30.2


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