[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>
diff --git a/arch/mips/kernel/gpio_txx9.c b/arch/mips/kernel/gpio_txx9.c
index b1436a8..c6854d9 100644
--- a/arch/mips/kernel/gpio_txx9.c
+++ b/arch/mips/kernel/gpio_txx9.c
@@ -47,23 +47,25 @@
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;
}