Fix spi-gpio MISO handling.

[openwrt-10.03/.git] / target / linux / generic-2.6 / patches-2.6.28 / 920-03-spi-gpio-fix-miso-bit.patch

diff --git a/target/linux/generic-2.6/patches-2.6.28/920-03-spi-gpio-fix-miso-bit.patch b/target/linux/generic-2.6/patches-2.6.28/920-03-spi-gpio-fix-miso-bit.patch
new file mode 100644 (file)
index 0000000..f4dd67e
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.28/920-03-spi-gpio-fix-miso-bit.patch
@@ -0,0 +1,22 @@
+SPI-GPIO bitbang:
+
+gpio_get_value() returns 0 or nonzero, but getmiso() expects 0 or 1.
+Sanitize the value to a 0/1 boolean.
+
+--mb
+
+
+
+Index: linux-2.6.28.5/drivers/spi/spi_gpio.c
+===================================================================
+--- linux-2.6.28.5.orig/drivers/spi/spi_gpio.c 2009-02-15 16:21:11.000000000 +0100
++++ linux-2.6.28.5/drivers/spi/spi_gpio.c      2009-02-15 16:21:47.000000000 +0100
+@@ -114,7 +114,7 @@ static inline void setmosi(const struct 
+ 
+ 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