From: Ben Dooks <ben@simtec.co.uk>
Date: Tue, 18 Aug 2009 21:11:17 +0000 (-0700)
Subject: spi_s3c24xx: fix transfer setup code
X-Git-Tag: v2.6.31-rc7~20
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=191529756633052680dd9d23ad63744ca5aa02a1;p=linux.git

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>
---

diff --git a/drivers/spi/spi_s3c24xx.c b/drivers/spi/spi_s3c24xx.c
index 590be85c8f3d..3f3119d760db 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;