The patch titled
spi_bitbang: add more lowlevel function documentation
has been removed from the -mm tree. Its filename was
spi_bitbang-add-more-lowlevel-function-documentation.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: spi_bitbang: add more lowlevel function documentation
From: Michael Buesch <mb@xxxxxxxxx>
This adds more documentation of the lowlevel API to avoid future bugs.
Signed-off-by: Michael Buesch <mb@xxxxxxxxx>
Acked-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/spi/spi_bitbang.h | 7 +++++++
1 file changed, 7 insertions(+)
diff -puN include/linux/spi/spi_bitbang.h~spi_bitbang-add-more-lowlevel-function-documentation include/linux/spi/spi_bitbang.h
--- a/include/linux/spi/spi_bitbang.h~spi_bitbang-add-more-lowlevel-function-documentation
+++ a/include/linux/spi/spi_bitbang.h
@@ -83,6 +83,13 @@ extern int spi_bitbang_stop(struct spi_b
* int getmiso(struct spi_device *);
* void spidelay(unsigned);
*
+ * setsck()'s is_on parameter is a zero/nonzero boolean.
+ *
+ * setmosi()'s is_on parameter is a zero/nonzero boolean.
+ *
+ * getmiso() is required to return 0 or 1 only. Any other value is invalid
+ * and will result in improper operation.
+ *
* A non-inlined routine would call bitbang_txrx_*() routines. The
* main loop could easily compile down to a handful of instructions,
* especially if the delay is a NOP (to run at peak speed).
_
Patches currently in -mm which might be from mb@xxxxxxxxx are
linux-next.patch
bcm47xx-fix-gpio-api-return-codes.patch
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