diff options
| author | Dave Airlie <airlied@redhat.com> | 2009-05-07 14:57:24 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-05-19 22:20:08 -0700 |
| commit | 3db025f88475dd6eaa4b4881d21f7ab89c8b1ecd (patch) | |
| tree | dc2cd2415b415aa7c64071df2fb7a97c6e3f00b7 | |
| parent | bdc9a1caa2fae65d8b323c312f73b40d30ff4dae (diff) | |
i2c-algo-bit: Fix timeout test
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>
| -rw-r--r-- | drivers/i2c/algos/i2c-algo-bit.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c index eb8f72ca02f..0e034a41ce9 100644 --- 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_data *adap) * 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(); } |