staging: mt7621-gpio: change gc_map to don't use pointers

There is no special gain in using pointers for 'gc_map' inside
'mtk_data' structure. We know the number of banks which is fixed
to MTK_BANK_CNT and we can just statically allocate them without
using kernel allocators.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Reviewed-by: NeilBrown <neil@brown.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 7 insertions, 10 deletions

diff --git a/drivers/staging/mt7621-gpio/gpio-mt7621.c b/drivers/staging/mt7621-gpio/gpio-mt7621.c
index 390cc56b3ac4..3192fc8616b6 100644
--- a/drivers/staging/mt7621-gpio/gpio-mt7621.c
+++ b/drivers/staging/mt7621-gpio/gpio-mt7621.c
@@ -45,7 +45,7 @@ struct mtk_data {
         void __iomem *gpio_membase;
         int gpio_irq;
         struct irq_domain *gpio_irq_domain;
-        struct mtk_gc *gc_map[MTK_BANK_CNT];
+        struct mtk_gc gc_map[MTK_BANK_CNT];
 };
 
 static inline struct mtk_gc *
@@ -152,11 +152,8 @@ mediatek_gpio_bank_probe(struct platform_device *pdev, struct device_node *bank)
         if (!id || be32_to_cpu(*id) >= MTK_BANK_CNT)
                 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;
+        rg = &gpio_data->gc_map[be32_to_cpu(*id)];
+        memset(rg, 0, sizeof(*rg));
 
         spin_lock_init(&rg->lock);
 
@@ -196,7 +193,7 @@ mediatek_gpio_irq_handler(struct irq_desc *desc)
         int i;
 
         for (i = 0; i < MTK_BANK_CNT; i++) {
-                struct mtk_gc *rg = gpio_data->gc_map[i];
+                struct mtk_gc *rg = &gpio_data->gc_map[i];
                 unsigned long pending;
                 int bit;
 
@@ -221,7 +218,7 @@ mediatek_gpio_irq_unmask(struct irq_data *d)
         struct mtk_data *gpio_data = irq_data_get_irq_chip_data(d);
         int pin = d->hwirq;
         int bank = pin / MTK_BANK_WIDTH;
-        struct mtk_gc *rg = gpio_data->gc_map[bank];
+        struct mtk_gc *rg = &gpio_data->gc_map[bank];
         unsigned long flags;
         u32 rise, fall;
 
@@ -242,7 +239,7 @@ mediatek_gpio_irq_mask(struct irq_data *d)
         struct mtk_data *gpio_data = irq_data_get_irq_chip_data(d);
         int pin = d->hwirq;
         int bank = pin / MTK_BANK_WIDTH;
-        struct mtk_gc *rg = gpio_data->gc_map[bank];
+        struct mtk_gc *rg = &gpio_data->gc_map[bank];
         unsigned long flags;
         u32 rise, fall;
 
@@ -263,7 +260,7 @@ mediatek_gpio_irq_type(struct irq_data *d, unsigned int type)
         struct mtk_data *gpio_data = irq_data_get_irq_chip_data(d);
         int pin = d->hwirq;
         int bank = pin / MTK_BANK_WIDTH;
-        struct mtk_gc *rg = gpio_data->gc_map[bank];
+        struct mtk_gc *rg = &gpio_data->gc_map[bank];
         u32 mask = PIN_MASK(pin);
 
         if (!rg)