[patch v2 2/2] pinctrl: samsung: remove "out of memory" messages

Dan Carpenter
2015-06-22T15:14:16Z

Checkpatch.pl complains about these:

WARNING: Possible unnecessary 'out of memory' message

The messages use a little extra RAM and they add a few extra lines of
code. We're probably never going to hit these out of memory situations
but if we did then kmalloc() has pretty good error messages built-in.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/pinctrl/samsung/pinctrl-exynos5440.c b/drivers/pinctrl/samsung/pinctrl-exynos5440.c
index fa84db6..5574b8a 100644
--- a/drivers/pinctrl/samsung/pinctrl-exynos5440.c
+++ b/drivers/pinctrl/samsung/pinctrl-exynos5440.c
@@ -203,10 +203,8 @@ static int exynos5440_dt_node_to_map(struct pinctrl_dev *pctldev,

/* Allocate memory for pin-map entries */
map = kzalloc(sizeof(*map) * map_cnt, GFP_KERNEL);
- if (!map) {
- dev_err(dev, "could not alloc memory for pin-maps\n");
+ if (!map)
return -ENOMEM;
- }
*nmaps = 0;

/*
@@ -214,10 +212,8 @@ static int exynos5440_dt_node_to_map(struct pinctrl_dev *pctldev,
* from the node name from which these map entries are be created.
*/
gname = kasprintf(GFP_KERNEL, "%s%s", np->name, GROUP_SUFFIX);
- if (!gname) {
- dev_err(dev, "failed to alloc memory for group name\n");
+ if (!gname)
goto free_map;
- }

/*
* don't have config options? then skip over to creating function
@@ -228,10 +224,8 @@ static int exynos5440_dt_node_to_map(struct pinctrl_dev *pctldev,

/* Allocate memory for config entries */
cfg = kzalloc(sizeof(*cfg) * cfg_cnt, GFP_KERNEL);
- if (!cfg) {
- dev_err(dev, "failed to alloc memory for configs\n");
+ if (!cfg)
goto free_gname;
- }

/* Prepare a list of config settings */
for (idx = 0, cfg_cnt = 0; idx < ARRAY_SIZE(pcfgs); idx++) {
@@ -253,10 +247,8 @@ skip_cfgs:
if (of_find_property(np, "samsung,exynos5440-pin-function", NULL)) {
fname = kasprintf(GFP_KERNEL,
"%s%s", np->name, FUNCTION_SUFFIX);
- if (!fname) {
- dev_err(dev, "failed to alloc memory for func name\n");
+ if (!fname)
goto free_cfg;
- }

map[*nmaps].data.mux.group = gname;
map[*nmaps].data.mux.function = fname;
@@ -647,10 +639,8 @@ static int exynos5440_pinctrl_parse_dt_pins(struct platform_device *pdev,
}

*pin_list = devm_kzalloc(dev, *npins * sizeof(**pin_list), GFP_KERNEL);
- if (!*pin_list) {
- dev_err(dev, "failed to allocate memory for pin list\n");
+ if (!*pin_list)
return -ENOMEM;
- }

return of_property_read_u32_array(cfg_np, "samsung,exynos5440-pins",
*pin_list, *npins);
@@ -678,17 +668,15 @@ static int exynos5440_pinctrl_parse_dt(struct platform_device *pdev,
return -EINVAL;

groups = devm_kzalloc(dev, grp_cnt * sizeof(*groups), GFP_KERNEL);
- if (!groups) {
- dev_err(dev, "failed allocate memory for ping group list\n");
+ if (!groups)
return -EINVAL;
- }
+
grp = groups;

functions = devm_kzalloc(dev, grp_cnt * sizeof(*functions), GFP_KERNEL);
- if (!functions) {
- dev_err(dev, "failed to allocate memory for function list\n");
+ if (!functions)
return -EINVAL;
- }
+
func = functions;

/*
@@ -708,10 +696,8 @@ static int exynos5440_pinctrl_parse_dt(struct platform_device *pdev,
/* derive pin group name from the node name */
gname = devm_kasprintf(dev, GFP_KERNEL,
"%s%s", cfg_np->name, GROUP_SUFFIX);
- if (!gname) {
- dev_err(dev, "failed to alloc memory for group name\n");
+ if (!gname)
return -ENOMEM;
- }

grp->name = gname;
grp->pins = pin_list;
@@ -727,18 +713,13 @@ skip_to_pin_function:
/* derive function name from the node name */
fname = devm_kasprintf(dev, GFP_KERNEL,
"%s%s", cfg_np->name, FUNCTION_SUFFIX);
- if (!fname) {
- dev_err(dev, "failed to alloc memory for func name\n");
+ if (!fname)
return -ENOMEM;
- }

func->name = fname;
func->groups = devm_kzalloc(dev, sizeof(char *), GFP_KERNEL);
- if (!func->groups) {
- dev_err(dev, "failed to alloc memory for group list "
- "in pin function");
+ if (!func->groups)
return -ENOMEM;
- }
func->groups[0] = gname;
func->num_groups = gname ? 1 : 0;
func->function = function;
@@ -766,10 +747,8 @@ static int exynos5440_pinctrl_register(struct platform_device *pdev,
int pin, ret;

ctrldesc = devm_kzalloc(dev, sizeof(*ctrldesc), GFP_KERNEL);
- if (!ctrldesc) {
- dev_err(dev, "could not allocate memory for pinctrl desc\n");
+ if (!ctrldesc)
return -ENOMEM;
- }

ctrldesc->name = "exynos5440-pinctrl";
ctrldesc->owner = THIS_MODULE;
@@ -779,10 +758,8 @@ static int exynos5440_pinctrl_register(struct platform_device *pdev,

pindesc = devm_kzalloc(&pdev->dev, sizeof(*pindesc) *
EXYNOS5440_MAX_PINS, GFP_KERNEL);
- if (!pindesc) {
- dev_err(&pdev->dev, "mem alloc for pin descriptors failed\n");
+ if (!pindesc)
return -ENOMEM;
- }
ctrldesc->pins = pindesc;
ctrldesc->npins = EXYNOS5440_MAX_PINS;

@@ -796,10 +773,8 @@ static int exynos5440_pinctrl_register(struct platform_device *pdev,
*/
pin_names = devm_kzalloc(&pdev->dev, sizeof(char) * PIN_NAME_LENGTH *
ctrldesc->npins, GFP_KERNEL);
- if (!pin_names) {
- dev_err(&pdev->dev, "mem alloc for pin names failed\n");
+ if (!pin_names)
return -ENOMEM;
- }

/* for each pin, set the name of the pin */
for (pin = 0; pin < ctrldesc->npins; pin++) {
@@ -836,10 +811,8 @@ static int exynos5440_gpiolib_register(struct platform_device *pdev,
int ret;

gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
- if (!gc) {
- dev_err(&pdev->dev, "mem alloc for gpio_chip failed\n");
+ if (!gc)
return -ENOMEM;
- }

priv->gc = gc;
gc->base = 0;
@@ -941,10 +914,8 @@ static int exynos5440_gpio_irq_init(struct platform_device *pdev,

intd = devm_kzalloc(dev, sizeof(*intd) * EXYNOS5440_MAX_GPIO_INT,
GFP_KERNEL);
- if (!intd) {
- dev_err(dev, "failed to allocate memory for gpio intr data\n");
+ if (!intd)
return -ENOMEM;
- }

for (i = 0; i < EXYNOS5440_MAX_GPIO_INT; i++) {
irq = irq_of_parse_and_map(dev->of_node, i);
@@ -987,10 +958,8 @@ static int exynos5440_pinctrl_probe(struct platform_device *pdev)
}

priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
- if (!priv) {
- dev_err(dev, "could not allocate memory for private data\n");
+ if (!priv)
return -ENOMEM;
- }

res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
priv->reg_base = devm_ioremap_resource(&pdev->dev, res);