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authorJohn Linn <john.linn@xilinx.com>2009-09-14 08:17:05 +0000
committerGrant Likely <grant.likely@secretlab.ca>2009-11-04 16:42:47 -0700
commit1a8d3b777dd71813b87c66c0eb161cc87f042126 (patch)
treec29b546b014acb28e5d6a424a5abeed75c8279eb /drivers/spi
parentf856cf01787354fb3c8cde0a80de606f368b21ed (diff)
downloadop-kernel-dev-1a8d3b777dd71813b87c66c0eb161cc87f042126.zip
op-kernel-dev-1a8d3b777dd71813b87c66c0eb161cc87f042126.tar.gz
Xilinx: SPI: Fix bits_per_word for transfers
The bits_per_word value can be set for each transfer, or can be set to zero in each transfer in which case it should default to the value in the driver. The driver was fixed to properly check the bits_per_word in the transfer that is passed in. Signed-off-by: John Linn <john.linn@xilinx.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/xilinx_spi.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/spi/xilinx_spi.c b/drivers/spi/xilinx_spi.c
index 46b8c5c..5a143b9 100644
--- a/drivers/spi/xilinx_spi.c
+++ b/drivers/spi/xilinx_spi.c
@@ -148,7 +148,8 @@ static int xilinx_spi_setup_transfer(struct spi_device *spi,
{
u8 bits_per_word;
- bits_per_word = (t) ? t->bits_per_word : spi->bits_per_word;
+ bits_per_word = (t && t->bits_per_word)
+ ? t->bits_per_word : spi->bits_per_word;
if (bits_per_word != 8) {
dev_err(&spi->dev, "%s, unsupported bits_per_word=%d\n",
__func__, bits_per_word);
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