From 1a8d3b777dd71813b87c66c0eb161cc87f042126 Mon Sep 17 00:00:00 2001
From: John Linn <john.linn@xilinx.com>
Date: Mon, 14 Sep 2009 08:17:05 +0000
Subject: 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>
---
drivers/spi/xilinx_spi.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
(limited to 'drivers')
diff --git a/drivers/spi/xilinx_spi.c b/drivers/spi/xilinx_spi.c
index 46b8c5c2f45..5a143b9f636 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);
--
cgit