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authorGeert Uytterhoeven <geert+renesas@linux-m68k.org>2014-01-12 17:00:29 +0400
committerMark Brown <broonie@linaro.org>2014-01-13 15:20:46 +0400
commit1afd9989a6a2561183be82e420d4d2f3889b7ee7 (patch)
tree3e531ecceb2e90e234d38bd52790145b76e8625b /drivers/spi/spi.c
parent269ccca8ec1a3991e07eaf5f90326134bd17781a (diff)
downloadlinux-1afd9989a6a2561183be82e420d4d2f3889b7ee7.tar.xz
spi: core: Improve tx/rx_nbits check comments
- Rephrase the comments about tx/rx_nbits validity checks, - Remove the stale comment about SPI_3WIRE (the code it refers to was removed in commit 368ca4e0c75612c0a4d6bbcef7efb944604340c2 ("spi: Eliminate 3WIRE spi_transfer check")). Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/spi/spi.c')
-rw-r--r--drivers/spi/spi.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 36bfa7f820a6..9f26797e4319 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1660,9 +1660,8 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
if (xfer->rx_buf && !xfer->rx_nbits)
xfer->rx_nbits = SPI_NBITS_SINGLE;
/* check transfer tx/rx_nbits:
- * 1. keep the value is not out of single, dual and quad
- * 2. keep tx/rx_nbits is contained by mode in spi_device
- * 3. if SPI_3WIRE, tx/rx_nbits should be in single
+ * 1. check the value matches one of single, dual and quad
+ * 2. check tx/rx_nbits match the mode in spi_device
*/
if (xfer->tx_buf) {
if (xfer->tx_nbits != SPI_NBITS_SINGLE &&