spi-gpio: sanitize MISO bitvalue

gpio_get_value() returns 0 or nonzero, but getmiso() expects 0 or 1.
Sanitize the value to a 0/1 boolean.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/spi/spi_gpio.c b/drivers/spi/spi_gpio.c
index 49698cabc30ddba88a6a6b02cb6ab3dd07da0fac..f5ed9721aabb33c24c9a75c79d58df19e595450f 100644 (file)
--- a/drivers/spi/spi_gpio.c
+++ b/drivers/spi/spi_gpio.c
@@ -114,7 +114,7 @@ static inline void setmosi(const struct spi_device *spi, int is_on)
 
 static inline int getmiso(const struct spi_device *spi)
 {
-       return gpio_get_value(SPI_MISO_GPIO);
+       return !!gpio_get_value(SPI_MISO_GPIO);
 }
 
 #undef pdata