From e8cba3cda44e1b042a64ab43d15d4d77c2038235 Mon Sep 17 00:00:00 2001 From: Himangi Saraogi Date: Tue, 20 May 2014 23:45:37 +0530 Subject: [PATCH] hwmon: (ultra45_env) Introduce managed version of kzalloc This patch moves data allocated using kzalloc to managed data allocated using devm_kzalloc and cleans now unnecessary kfrees in probe and remove functions. Also, the unnecessary label out_free is removed. The following Coccinelle semantic patch was used for making the change: @platform@ identifier p, probefn, removefn; @@ struct platform_driver p = { .probe = probefn, .remove = removefn, }; @prb@ identifier platform.probefn, pdev; expression e, e1, e2; @@ probefn(struct platform_device *pdev, ...) { <+... - e = kzalloc(e1, e2) + e = devm_kzalloc(&pdev->dev, e1, e2) ... ?-kfree(e); ...+> } @rem depends on prb@ identifier platform.removefn; expression e; @@ removefn(...) { <... - kfree(e); ...> } Signed-off-by: Himangi Saraogi Signed-off-by: Guenter Roeck --- drivers/hwmon/ultra45_env.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/hwmon/ultra45_env.c b/drivers/hwmon/ultra45_env.c index fb3e69341c1b..7d4658636064 100644 --- a/drivers/hwmon/ultra45_env.c +++ b/drivers/hwmon/ultra45_env.c @@ -252,7 +252,7 @@ static const struct attribute_group env_group = { static int env_probe(struct platform_device *op) { - struct env *p = kzalloc(sizeof(*p), GFP_KERNEL); + struct env *p = devm_kzalloc(&op->dev, sizeof(*p), GFP_KERNEL); int err = -ENOMEM; if (!p) @@ -262,7 +262,7 @@ static int env_probe(struct platform_device *op) p->regs = of_ioremap(&op->resource[0], 0, REG_SIZE, "pic16f747"); if (!p->regs) - goto out_free; + goto out; err = sysfs_create_group(&op->dev.kobj, &env_group); if (err) @@ -286,8 +286,6 @@ out_sysfs_remove_group: out_iounmap: of_iounmap(&op->resource[0], p->regs, REG_SIZE); -out_free: - kfree(p); goto out; } @@ -299,7 +297,6 @@ static int env_remove(struct platform_device *op) sysfs_remove_group(&op->dev.kobj, &env_group); hwmon_device_unregister(p->hwmon_dev); of_iounmap(&op->resource[0], p->regs, REG_SIZE); - kfree(p); } return 0; -- 2.20.1