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>

3 files changed, 19 insertions, 40 deletions

diff --git a/drivers/sh/pfc/core.c b/drivers/sh/pfc/core.c
index 6d162e694e68..54919026ac12 100644
--- a/drivers/sh/pfc/core.c
+++ b/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,
diff --git a/drivers/sh/pfc/gpio.c b/drivers/sh/pfc/gpio.c
index a32ea8083b91..37493e5fe2ee 100644
--- a/drivers/sh/pfc/gpio.c
+++ b/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;
 }
diff --git a/drivers/sh/pfc/pinctrl.c b/drivers/sh/pfc/pinctrl.c
index 2fc873137ce8..b3dbefd5658b 100644
--- a/drivers/sh/pfc/pinctrl.c
+++ b/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>
@@ -357,8 +358,8 @@ 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,
-                            GFP_KERNEL);
+        pmx->pads = devm_kzalloc(pfc->dev, sizeof(*pmx->pads) * pmx->nr_pads,
+                                 GFP_KERNEL);
         if (unlikely(!pmx->pads)) {
                 pmx->nr_pads = 0;
                 return -ENOMEM;
@@ -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;
 }