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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-02-18 09:09:09 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-02-18 09:09:09 -0800
commit51d52b26e1d88ce79f1053f1b0f7f4d43a98d26d (patch)
treefe0d213a91f49fd4340728a4f5bf34f60e3fba8c /include/linux/spi/spi.h
parentc600558668e4ebd0fab6bf1d90baaf95bc43f9d5 (diff)
parent6d0abeca3242a88cab8232e4acd7e2bf088f3bc2 (diff)
Merge 3.14-rc3 into tty-next
This is for the fixes in that release, we want them here too. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/spi/spi.h')
-rw-r--r--include/linux/spi/spi.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index a1d4ca290862..4203c66d8803 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -273,7 +273,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* message while queuing transfers that arrive in the meantime. When the
* driver is finished with this message, it must call
* spi_finalize_current_message() so the subsystem can issue the next
- * transfer
+ * message
* @unprepare_transfer_hardware: there are currently no more messages on the
* queue so the subsystem notifies the driver that it may relax the
* hardware by issuing this call
@@ -287,7 +287,10 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* - return 1 if the transfer is still in progress. When
* the driver is finished with this transfer it must
* call spi_finalize_current_transfer() so the subsystem
- * can issue the next transfer
+ * can issue the next transfer. Note: transfer_one and
+ * transfer_one_message are mutually exclusive; when both
+ * are set, the generic subsystem does not call your
+ * transfer_one callback.
* @unprepare_message: undo any work done by prepare_message().
* @cs_gpios: Array of GPIOs to use as chip select lines; one per CS
* number. Any individual value may be -ENOENT for CS lines that