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drivers/w1/masters/w1-gpio.c: fix read_bit()

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W1 master implementations are expected to return 0 or 1 from their
read_bit() function.  However, not all platforms do return these values
from gpio_get_value() - namely PXAs won't.  Hence the w1 gpio-master needs
to break the result down to 0 or 1 itself.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Ville Syrjala <syrjala@sci.fi>
Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Daniel Mack 2009-03-12 14:31:25 -07:00 committed by Linus Torvalds
parent 00699e8472
commit 8d0df7a3d1
1 changed files with 1 additions and 1 deletions
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drivers/w1/masters/w1-gpio.c
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@ -39,7 +39,7 @@ static u8 w1_gpio_read_bit(void *data)
{
struct w1_gpio_platform_data *pdata = data;
return gpio_get_value(pdata->pin);
return gpio_get_value(pdata->pin) ? 1 : 0;
}
static int __init w1_gpio_probe(struct platform_device *pdev)