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 <[email protected]>
Cc: David Brownell <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/drivers/spi/spi_s3c24xx.c b/drivers/spi/spi_s3c24xx.c
index 590be85c8f3d78d114bdf34819ae688f16c6aa7b..3f3119d760db71fc653b75e77615ce8069b7c300 100644 (file)
--- 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;