[PATCH] spi_bfin5xx: limit reaches -1

[Roel Kluin <roel.kluin-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

bfin_spi_flush() returns limit, which reaches -1 upon timeout. but in function
bfin_spi_pump_transfers() it is compared with 0.

Signed-off-by: Roel Kluin <roel.kluin-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index f014cc2..6545b0c 100644
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -169,7 +169,7 @@ static int bfin_spi_flush(struct driver_data *drv_data)
 	unsigned long limit = loops_per_jiffy << 1;
 
 	/* wait for stop and clear stat */
-	while (!(read_STAT(drv_data) & BIT_STAT_SPIF) && limit--)
+	while (!(read_STAT(drv_data) & BIT_STAT_SPIF) && --limit)
 		cpu_relax();
 
 	write_STAT(drv_data, BIT_STAT_CLR);

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