sh-pfc: Use devm_kzalloc()

Replace probe-time kmalloc()/kzalloc() calls with devm_kzalloc() and get
rid of the corresponding kfree() calls.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

drivers/sh/pfc/core.c

@@ -33,9 +33,6 @@ static void pfc_iounmap(struct sh_pfc *pfc)
 	for (k = 0; k < pfc->pdata->num_resources; k++)
 		if (pfc->window[k].virt)
 			iounmap(pfc->window[k].virt);
-
-	kfree(pfc->window);
-	pfc->window = NULL;
 }
 
 static int pfc_ioremap(struct sh_pfc *pfc)
@@ -46,10 +43,10 @@ static int pfc_ioremap(struct sh_pfc *pfc)
 	if (!pfc->pdata->num_resources)
 		return 0;
 
-	pfc->window = kzalloc(pfc->pdata->num_resources * sizeof(*pfc->window),
-			      GFP_NOWAIT);
+	pfc->window = devm_kzalloc(pfc->dev, pfc->pdata->num_resources *
+				   sizeof(*pfc->window), GFP_NOWAIT);
 	if (!pfc->window)
-		goto err1;
+		return -ENOMEM;
 
 	for (k = 0; k < pfc->pdata->num_resources; k++) {
 		res = pfc->pdata->resource + k;
@@ -58,16 +55,13 @@ static int pfc_ioremap(struct sh_pfc *pfc)
 		pfc->window[k].size = resource_size(res);
 		pfc->window[k].virt = ioremap_nocache(res->start,
 							 resource_size(res));
-		if (!pfc->window[k].virt)
-			goto err2;
+		if (!pfc->window[k].virt) {
+			pfc_iounmap(pfc);
+			return -ENOMEM;
+		}
 	}
 
 	return 0;
-
-err2:
-	pfc_iounmap(pfc);
-err1:
-	return -1;
 }
 
 static void __iomem *pfc_phys_to_virt(struct sh_pfc *pfc,

drivers/sh/pfc/gpio.c

@@ -11,6 +11,7 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME " gpio: " fmt
 
+#include <linux/device.h>
 #include <linux/init.h>
 #include <linux/gpio.h>
 #include <linux/slab.h>
@@ -143,7 +144,7 @@ int sh_pfc_register_gpiochip(struct sh_pfc *pfc)
 	struct sh_pfc_chip *chip;
 	int ret;
 
-	chip = kzalloc(sizeof(struct sh_pfc_chip), GFP_KERNEL);
+	chip = devm_kzalloc(pfc->dev, sizeof(*chip), GFP_KERNEL);
 	if (unlikely(!chip))
 		return -ENOMEM;
 
@@ -152,10 +153,8 @@ int sh_pfc_register_gpiochip(struct sh_pfc *pfc)
 	sh_pfc_gpio_setup(chip);
 
 	ret = gpiochip_add(&chip->gpio_chip);
-	if (unlikely(ret < 0)) {
-		kfree(chip);
+	if (unlikely(ret < 0))
 		return ret;
-	}
 
 	pfc->gpio = chip;
 
@@ -175,7 +174,6 @@ int sh_pfc_unregister_gpiochip(struct sh_pfc *pfc)
 	if (unlikely(ret < 0))
 		return ret;
 
-	kfree(chip);
 	pfc->gpio = NULL;
 	return 0;
 }

drivers/sh/pfc/pinctrl.c

@@ -11,6 +11,7 @@
 #define DRV_NAME "sh-pfc"
 #define pr_fmt(fmt) KBUILD_MODNAME " pinctrl: " fmt
 
+#include <linux/device.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/sh_pfc.h>
@@ -357,7 +358,7 @@ static int sh_pfc_map_gpios(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx)
 
 	pmx->nr_pads = pfc->pdata->last_gpio - pfc->pdata->first_gpio + 1;
 
-	pmx->pads = kmalloc(sizeof(struct pinctrl_pin_desc) * pmx->nr_pads,
+	pmx->pads = devm_kzalloc(pfc->dev, sizeof(*pmx->pads) * pmx->nr_pads,
 				 GFP_KERNEL);
 	if (unlikely(!pmx->pads)) {
 		pmx->nr_pads = 0;
@@ -399,8 +400,8 @@ static int sh_pfc_map_functions(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx)
 	unsigned long flags;
 	int i, fn;
 
-	pmx->functions = kzalloc(pmx->nr_functions * sizeof(void *),
-				 GFP_KERNEL);
+	pmx->functions = devm_kzalloc(pfc->dev, pmx->nr_functions *
+				      sizeof(*pmx->functions), GFP_KERNEL);
 	if (unlikely(!pmx->functions))
 		return -ENOMEM;
 
@@ -423,7 +424,7 @@ int sh_pfc_register_pinctrl(struct sh_pfc *pfc)
 	struct sh_pfc_pinctrl *pmx;
 	int ret;
 
-	pmx = kzalloc(sizeof(struct sh_pfc_pinctrl), GFP_KERNEL);
+	pmx = devm_kzalloc(pfc->dev, sizeof(*pmx), GFP_KERNEL);
 	if (unlikely(!pmx))
 		return -ENOMEM;
 
@@ -438,13 +439,11 @@ int sh_pfc_register_pinctrl(struct sh_pfc *pfc)
 
 	ret = sh_pfc_map_functions(pfc, pmx);
 	if (unlikely(ret != 0))
-		goto free_pads;
+		return ret;
 
 	pmx->pctl = pinctrl_register(&sh_pfc_pinctrl_desc, pfc->dev, pmx);
-	if (IS_ERR(pmx->pctl)) {
-		ret = PTR_ERR(pmx->pctl);
-		goto free_functions;
-	}
+	if (IS_ERR(pmx->pctl))
+		return PTR_ERR(pmx->pctl);
 
 	sh_pfc_gpio_range.npins = pfc->pdata->last_gpio
 				- pfc->pdata->first_gpio + 1;
@@ -454,14 +453,6 @@ int sh_pfc_register_pinctrl(struct sh_pfc *pfc)
 	pinctrl_add_gpio_range(pmx->pctl, &sh_pfc_gpio_range);
 
 	return 0;
-
-free_functions:
-	kfree(pmx->functions);
-free_pads:
-	kfree(pmx->pads);
-	kfree(pmx);
-
-	return ret;
 }
 
 int sh_pfc_unregister_pinctrl(struct sh_pfc *pfc)
@@ -470,10 +461,6 @@ int sh_pfc_unregister_pinctrl(struct sh_pfc *pfc)
 
 	pinctrl_unregister(pmx->pctl);
 
-	kfree(pmx->functions);
-	kfree(pmx->pads);
-	kfree(pmx);
-
 	pfc->pinctrl = NULL;
 	return 0;
 }