staging: mt7621-gpio: avoid locking in mediatek_gpio_get_direction

mediatek_gpio_get_direction function is holding across a simple read
which it seems to be not neccessary at all. Just remove this locking
cleaning code of this function a bit.

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, 1 insertions, 6 deletions

diff --git a/drivers/staging/mt7621-gpio/gpio-mt7621.c b/drivers/staging/mt7621-gpio/gpio-mt7621.c
index 79452eb7a654..143268a866c2 100644
--- a/drivers/staging/mt7621-gpio/gpio-mt7621.c
+++ b/drivers/staging/mt7621-gpio/gpio-mt7621.c
@@ -129,12 +129,7 @@ static int
 mediatek_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
 {
         struct mtk_gc *rg = to_mediatek_gpio(chip);
-        unsigned long flags;
-        u32 t;
-
-        spin_lock_irqsave(&rg->lock, flags);
-        t = mtk_gpio_r32(rg, GPIO_REG_CTRL);
-        spin_unlock_irqrestore(&rg->lock, flags);
+        u32 t = mtk_gpio_r32(rg, GPIO_REG_CTRL);
 
         return (t & BIT(offset)) ? 0 : 1;
 }