From 191529756633052680dd9d23ad63744ca5aa02a1 Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben@simtec.co.uk>
Date: Tue, 18 Aug 2009 14:11:17 -0700
Subject: [PATCH] spi_s3c24xx: fix transfer setup code
Since the changes to the bitbang driver, there is the possibility we will
be called with either the speed_hz or bpw values zero. We take these to
mean that the default values (8 bits per word, or maximum bus speed).
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
drivers/spi/spi_s3c24xx.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/spi/spi_s3c24xx.c b/drivers/spi/spi_s3c24xx.c
index 590be85c8f3..3f3119d760d 100644
--- a/drivers/spi/spi_s3c24xx.c
+++ b/drivers/spi/spi_s3c24xx.c
@@ -116,6 +116,12 @@ static int s3c24xx_spi_setupxfer(struct spi_device *spi,
bpw = t ? t->bits_per_word : spi->bits_per_word;
hz = t ? t->speed_hz : spi->max_speed_hz;
+ if (!bpw)
+ bpw = 8;
+
+ if (!hz)
+ hz = spi->max_speed_hz;
+
if (bpw != 8) {
dev_err(&spi->dev, "invalid bits-per-word (%d)\n", bpw);
return -EINVAL;
--
2.25.4