Linux Kernels

pwm: ab8500: use devm_kzalloc()

This change “pwm: ab8500: use devm_kzalloc()” (commit 482467a) in Linux kernel is authored by Jingoo Han <jg1.han [at] samsung.com> on Fri Mar 8 12:45:58 2013 +0900.

Description of "pwm: ab8500: use devm_kzalloc()"

The change “pwm: ab8500: use devm_kzalloc()” introduces changes as follows.

pwm: ab8500: use devm_kzalloc()

Use devm_kzalloc() to make cleanup paths more simple.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>

Linux kernel releases containing commit 482467a

The Linux kernel releases containing this commit are as follows.

Linux kernel code changes from "pwm: ab8500: use devm_kzalloc()"

There are 7 lines of Linux source code added/deleted in this change. Code changes to Linux kernel are as follows.

 drivers/pwm/pwm-ab8500.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)
 
diff --git a/drivers/pwm/pwm-ab8500.c b/drivers/pwm/pwm-ab8500.c
index 4248d0418273..93af1bbf88ce 100644
--- a/drivers/pwm/pwm-ab8500.c
+++ b/drivers/pwm/pwm-ab8500.c
@@ -99,7 +99,7 @@ static int ab8500_pwm_probe(struct platform_device *pdev)
 	 * Nothing to be done in probe, this is required to get the
 	 * device which is required for ab8500 read and write
 	 */
-	ab8500 = kzalloc(sizeof(*ab8500), GFP_KERNEL);
+	ab8500 = devm_kzalloc(&pdev->dev, sizeof(*ab8500), GFP_KERNEL);
 	if (ab8500 == NULL) {
 		dev_err(&pdev->dev, "failed to allocate memory\n");
 		return -ENOMEM;
@@ -111,10 +111,8 @@ static int ab8500_pwm_probe(struct platform_device *pdev)
 	ab8500->chip.npwm = 1;
 
 	err = pwmchip_add(&ab8500->chip);
-	if (err < 0) {
-		kfree(ab8500);
+	if (err < 0)
 		return err;
-	}
 
 	dev_dbg(&pdev->dev, "pwm probe successful\n");
 	platform_set_drvdata(pdev, ab8500);
@@ -132,7 +130,6 @@ static int ab8500_pwm_remove(struct platform_device *pdev)
 		return err;
 
 	dev_dbg(&pdev->dev, "pwm driver removed\n");
-	kfree(ab8500);
 
 	return 0;
 }

The commit for this change in Linux stable tree is 482467a (patch).

Last modified: 2020/01/11 09:41