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spi: spi_s3c24xx driver must init completion

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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>
This commit is contained in:
Ben Dooks 2008-04-15 14:34:44 -07:00 committed by Linus Torvalds
parent 335e92e8a5
commit 4bb5eba06b
1 changed files with 3 additions and 0 deletions
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3
drivers/spi/spi_s3c24xx.c
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@ -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;