[PATCH] i2c: timeouts reach -1

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

With a postfix decrement these timeouts reach -1 rather than 0,
but after the loop it is tested whether they have become 0.

Signed-off-by: Roel Kluin <roel.kluin-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 drivers/i2c/busses/i2c-amd8111.c |    4 ++--
 drivers/i2c/busses/i2c-pxa.c     |    2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/i2c/busses/i2c-amd8111.c b/drivers/i2c/busses/i2c-amd8111.c
index edab519..3b9f768 100644
--- a/drivers/i2c/busses/i2c-amd8111.c
+++ b/drivers/i2c/busses/i2c-amd8111.c
@@ -72,7 +72,7 @@ static unsigned int amd_ec_wait_write(struct amd_smbus *smbus)
 {
 	int timeout = 500;
 
-	while (timeout-- && (inb(smbus->base + AMD_EC_SC) & AMD_EC_SC_IBF))
+	while (--timeout && (inb(smbus->base + AMD_EC_SC) & AMD_EC_SC_IBF))
 		udelay(1);
 
 	if (!timeout) {
@@ -88,7 +88,7 @@ static unsigned int amd_ec_wait_read(struct amd_smbus *smbus)
 {
 	int timeout = 500;
 
-	while (timeout-- && (~inb(smbus->base + AMD_EC_SC) & AMD_EC_SC_OBF))
+	while (--timeout && (~inb(smbus->base + AMD_EC_SC) & AMD_EC_SC_OBF))
 		udelay(1);
 
 	if (!timeout) {
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 6af6814..6379ec1 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -644,7 +644,7 @@ static int i2c_pxa_do_pio_xfer(struct pxa_i2c *i2c,
 
 	i2c_pxa_start_message(i2c);
 
-	while (timeout-- && i2c->msg_num > 0) {
+	while (--timeout && i2c->msg_num > 0) {
 		i2c_pxa_handler(0, i2c);
 		udelay(10);
 	}