Driver probe function includes an allocation using devm_kzalloc
which is "hidden" a bit inside the declarations. Extract this
to a better place to increase readability. Also because we are
allocating zeroed memory 'memset' statement is not needed at all.
Condition for checking for a valid gpio id is wrong and it should
be greater or equal instead of only greater so update to be the
good one.
Signed-off-by: Sergio Paracuellos <sergio.paracuel...@gmail.com>
---
drivers/staging/mt7621-gpio/gpio-mt7621.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/mt7621-gpio/gpio-mt7621.c
b/drivers/staging/mt7621-gpio/gpio-mt7621.c
index c701259..016475f 100644
--- a/drivers/staging/mt7621-gpio/gpio-mt7621.c
+++ b/drivers/staging/mt7621-gpio/gpio-mt7621.c
@@ -156,17 +156,18 @@ mediatek_gpio_bank_probe(struct platform_device *pdev,
struct device_node *bank)
{
struct mtk_data *gpio_data = dev_get_drvdata(&pdev->dev);
const __be32 *id = of_get_property(bank, "reg", NULL);
- struct mtk_gc *rg = devm_kzalloc(&pdev->dev,
- sizeof(struct mtk_gc), GFP_KERNEL);
+ struct mtk_gc *rg;
int ret;
- if (!rg || !id || be32_to_cpu(*id) > MTK_MAX_BANK)
+ if (!id || be32_to_cpu(*id) >= MTK_MAX_BANK)
+ return -EINVAL;
+
+ rg = devm_kzalloc(&pdev->dev, sizeof(struct mtk_gc), GFP_KERNEL);
+ if (!rg)
return -ENOMEM;
gpio_data->gc_map[be32_to_cpu(*id)] = rg;
- memset(rg, 0, sizeof(struct mtk_gc));
-
spin_lock_init(&rg->lock);
rg->chip.parent = &pdev->dev;
--
2.7.4
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