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authorMichael Büsch <mb@bu3sch.de>2009-02-15 15:50:26 +0000
committerMichael Büsch <mb@bu3sch.de>2009-02-15 15:50:26 +0000
commitd8ab910fdcb2b24e0101166ae866781dfd4dcf21 (patch)
tree33566164ab8407ca8e3403e63cdb50e782aa7bfd /target/linux
parentfc19f3f372943134e1614bf3df602c76d56240a1 (diff)
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Fix spi-gpio MISO handling.
SVN-Revision: 14523
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/generic-2.6/patches-2.6.28/920-03-spi-gpio-fix-miso-bit.patch22
1 files changed, 22 insertions, 0 deletions
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
index 0000000000..f4dd67efee
--- /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