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powerpc/qe_lib: Set gpio data before changing the direction to output

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This avoids having a short glitch if the desired initial value is not
the same as what was previously in the data register.

Signed-off-by: Michael Barkowski <michaelbarkowski@ruggedcom.com>
Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Michael Barkowski 2009-08-18 17:20:44 -04:00 • committed by Kumar Gala
parent 9b9d401b8d
commit 1dcd8ffc81
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/sysdev/qe_lib/gpio.c
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@ -105,14 +105,14 @@ static int qe_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
struct qe_gpio_chip *qe_gc = to_qe_gpio_chip(mm_gc); struct qe_gpio_chip *qe_gc = to_qe_gpio_chip(mm_gc);
unsigned long flags; unsigned long flags;
qe_gpio_set(gc, gpio, val);
spin_lock_irqsave(&qe_gc->lock, flags); spin_lock_irqsave(&qe_gc->lock, flags);
__par_io_config_pin(mm_gc->regs, gpio, QE_PIO_DIR_OUT, 0, 0, 0); __par_io_config_pin(mm_gc->regs, gpio, QE_PIO_DIR_OUT, 0, 0, 0);
spin_unlock_irqrestore(&qe_gc->lock, flags); spin_unlock_irqrestore(&qe_gc->lock, flags);
qe_gpio_set(gc, gpio, val);
return 0; return 0;
} }