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authorBen Dooks <ben-linux@fluff.org>2008-04-15 14:34:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-15 19:35:41 -0700
commit4bb5eba06b4bc57e30b0f6336c9907e85c395197 (patch)
treee471e6c09b5aa148eef724bc7ffd04ec5e59c04e
parent335e92e8a515420bd47a6b0f01cb9a206c0ed6e4 (diff)
downloadlinux-4bb5eba06b4bc57e30b0f6336c9907e85c395197.tar.gz
linux-4bb5eba06b4bc57e30b0f6336c9907e85c395197.tar.xz
spi: spi_s3c24xx driver must init completion
The s3c24xx_spi_txrx() function should initialise the completion each time before using it, otherwise we end up with the possibility of returning success before the interrupt handler has processed all the data. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/spi/spi_s3c24xx.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/spi/spi_s3c24xx.c b/drivers/spi/spi_s3c24xx.c
index e75103a..6f2c79d 100644
--- a/drivers/spi/spi_s3c24xx.c
+++ b/drivers/spi/spi_s3c24xx.c
@@ -192,8 +192,11 @@ static int s3c24xx_spi_txrx(struct spi_device *spi, struct spi_transfer *t)
hw->len = t->len;
hw->count = 0;
+ init_completion(&hw->done);
+
/* send the first byte */
writeb(hw_txbyte(hw, 0), hw->regs + S3C2410_SPTDAT);
+
wait_for_completion(&hw->done);
return hw->count;