staging: mt7621-gpio: avoid check for NULL in 'to_mediatek_gpio' calls

Function 'to_mediatek_gpio' cannot return NULL, so this NULL
checkings are pointless.

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

diff --git a/drivers/staging/mt7621-gpio/gpio-mt7621.c b/drivers/staging/mt7621-gpio/gpio-mt7621.c
index 853817a3cf1633063a355902aef5f53975a6f127..1318003b28d5dc73e0d59119da6650deb6caeb29 100644 (file)
--- a/drivers/staging/mt7621-gpio/gpio-mt7621.c
+++ b/drivers/staging/mt7621-gpio/gpio-mt7621.c
@@ -115,9 +115,6 @@ mediatek_gpio_irq_unmask(struct irq_data *d)
        unsigned long flags;
        u32 rise, fall, high, low;
 
-       if (!rg)
-               return;
-
        spin_lock_irqsave(&rg->lock, flags);
        rise = mtk_gpio_r32(rg, GPIO_REG_REDGE);
        fall = mtk_gpio_r32(rg, GPIO_REG_FEDGE);
@@ -139,9 +136,6 @@ mediatek_gpio_irq_mask(struct irq_data *d)
        unsigned long flags;
        u32 rise, fall, high, low;
 
-       if (!rg)
-               return;
-
        spin_lock_irqsave(&rg->lock, flags);
        rise = mtk_gpio_r32(rg, GPIO_REG_REDGE);
        fall = mtk_gpio_r32(rg, GPIO_REG_FEDGE);
@@ -162,9 +156,6 @@ mediatek_gpio_irq_type(struct irq_data *d, unsigned int type)
        int pin = d->hwirq;
        u32 mask = BIT(pin);
 
-       if (!rg)
-               return -1;
-
        if (type == IRQ_TYPE_PROBE) {
                if ((rg->rising | rg->falling |
                     rg->hlevel | rg->llevel) & mask)