[patch 07/28] i2c-algo-bit: Fix timeout test

[Greg KH <gregkh@suse.de>]

[-- Attachment #1: i2c-algo-bit-fix-timeout-test.patch --]
[-- Type: text/plain, Size: 1187 bytes --]


2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Dave Airlie <airlied@redhat.com>

commit 0cdba07bb23cdd3e0d64357ec3d983e6b75e541f upstream

When fetching DDC using i2c algo bit, we were often seeing timeouts
before getting valid EDID on a retry. The VESA spec states 2ms is the
DDC timeout, so when this translates into 1 jiffie and we are close
to the end of the time period, it could return with a timeout less than
2ms.

Change this code to use time_after instead of time_after_eq.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/i2c/algos/i2c-algo-bit.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/i2c/algos/i2c-algo-bit.c
+++ b/drivers/i2c/algos/i2c-algo-bit.c
@@ -104,7 +104,7 @@ static int sclhi(struct i2c_algo_bit_dat
 		 * chips may hold it low ("clock stretching") while they
 		 * are processing data internally.
 		 */
-		if (time_after_eq(jiffies, start + adap->timeout))
+		if (time_after(jiffies, start + adap->timeout))
 			return -ETIMEDOUT;
 		cond_resched();
 	}