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authorRoel Kluin <roel.kluin@gmail.com>2009-04-21 12:24:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-21 13:41:49 -0700
commit306c68aaa7c62010428196d309fda30b6bf57710 (patch)
tree0302de1a38b1c3e0381d546d668e741e39abbfcd
parentdc8c7f8919aeb2d89247bdf302ad68b569a2b1e2 (diff)
spi: pxa2xx: limit reaches -1
On line 944 the return value of flush() is considered as a boolean, but limit reaches -1 upon timeout which evaluates to true. On 540, 594, 720 the same occurs for wait_ssp_rx_stall() On 536 the same occurs for wait_dma_channel_stop() Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Eric Miao <eric.miao@marvell.com> Cc: David Brownell <david-b@pacbell.net> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/spi/pxa2xx_spi.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/spi/pxa2xx_spi.c b/drivers/spi/pxa2xx_spi.c
index 1a00b415bcc4..885194a07418 100644
--- a/drivers/spi/pxa2xx_spi.c
+++ b/drivers/spi/pxa2xx_spi.c
@@ -213,7 +213,7 @@ static int flush(struct driver_data *drv_data)
while (read_SSSR(reg) & SSSR_RNE) {
read_SSDR(reg);
}
- } while ((read_SSSR(reg) & SSSR_BSY) && limit--);
+ } while ((read_SSSR(reg) & SSSR_BSY) && --limit);
write_SSSR(SSSR_ROR, reg);
return limit;
@@ -484,7 +484,7 @@ static int wait_ssp_rx_stall(void const __iomem *ioaddr)
{
unsigned long limit = loops_per_jiffy << 1;
- while ((read_SSSR(ioaddr) & SSSR_BSY) && limit--)
+ while ((read_SSSR(ioaddr) & SSSR_BSY) && --limit)
cpu_relax();
return limit;
@@ -494,7 +494,7 @@ static int wait_dma_channel_stop(int channel)
{
unsigned long limit = loops_per_jiffy << 1;
- while (!(DCSR(channel) & DCSR_STOPSTATE) && limit--)
+ while (!(DCSR(channel) & DCSR_STOPSTATE) && --limit)
cpu_relax();
return limit;