[MIPS] txx9: Make gpio_txx9 entirely spinlock-safe

TXx9 GPIO set/get routines are spinlock-safe.  This patch make
gpio_direction_{input,output} routines also spinlock-safe so that they
can be used during early board setup.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 6 insertions, 4 deletions

diff --git a/arch/mips/kernel/gpio_txx9.c b/arch/mips/kernel/gpio_txx9.c
index b1436a857998..c6854d9df926 100644
--- a/arch/mips/kernel/gpio_txx9.c
+++ b/arch/mips/kernel/gpio_txx9.c
@@ -47,23 +47,25 @@ static void txx9_gpio_set(struct gpio_chip *chip, unsigned int offset,
 
 static int txx9_gpio_dir_in(struct gpio_chip *chip, unsigned int offset)
 {
-        spin_lock_irq(&txx9_gpio_lock);
+        unsigned long flags;
+        spin_lock_irqsave(&txx9_gpio_lock, flags);
         __raw_writel(__raw_readl(&txx9_pioptr->dir) & ~(1 << offset),
                      &txx9_pioptr->dir);
         mmiowb();
-        spin_unlock_irq(&txx9_gpio_lock);
+        spin_unlock_irqrestore(&txx9_gpio_lock, flags);
         return 0;
 }
 
 static int txx9_gpio_dir_out(struct gpio_chip *chip, unsigned int offset,
                              int value)
 {
-        spin_lock_irq(&txx9_gpio_lock);
+        unsigned long flags;
+        spin_lock_irqsave(&txx9_gpio_lock, flags);
         txx9_gpio_set_raw(offset, value);
         __raw_writel(__raw_readl(&txx9_pioptr->dir) | (1 << offset),
                      &txx9_pioptr->dir);
         mmiowb();
-        spin_unlock_irq(&txx9_gpio_lock);
+        spin_unlock_irqrestore(&txx9_gpio_lock, flags);
         return 0;
 }