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pinctrl: adi2: Fix dead lock in adi_gpio_direction_output

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Current code hold port->lock spinlock and then try to grab the lock again
in adi_gpio_set_value(). Fix it.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Axel Lin 2013-09-24 15:47:41 +08:00 • committed by Linus Walleij
commit fe4315c3b0
1 changed files with 2 additions and 1 deletions
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3
drivers/pinctrl/pinctrl-adi2.c
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@ -776,10 +776,11 @@ static int adi_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
struct gpio_port_t *regs = port->regs;
unsigned long flags;
adi_gpio_set_value(chip, offset, value);
spin_lock_irqsave(&port->lock, flags);
writew(readw(&regs->inen) & ~(1 << offset), &regs->inen);
adi_gpio_set_value(chip, offset, value);
writew(1 << offset, &regs->dir_set);
spin_unlock_irqrestore(&port->lock, flags);