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spi: core: Add spi_transfer_is_last() helper

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This adds the function spi_transfer_is_last() which can be used by
drivers to know whether a given transfer is the last one in the
current message.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Beniamino Galvani 2014-11-22 16:21:39 +01:00 committed by Mark Brown
parent 5d01410fe4
commit b671358ad7
1 changed files with 6 additions and 0 deletions
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6
include/linux/spi/spi.h
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@ -1049,4 +1049,10 @@ spi_unregister_device(struct spi_device *spi)
extern const struct spi_device_id *
spi_get_device_id(const struct spi_device *sdev);
static inline bool
spi_transfer_is_last(struct spi_master *master, struct spi_transfer *xfer)
{
return list_is_last(&xfer->transfer_list, &master->cur_msg->transfers);
}
#endif /* __LINUX_SPI_H */