On Fri, Apr 24, 2009 at 11:42:59AM +0200, Jean Delvare wrote:
> Hi Dave,
>
> On Fri, 24 Apr 2009 09:09:13 +1000, Dave Airlie wrote:
> > From: Dave Airlie <airlied@xxxxxxxxxx>
> >
> > 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@xxxxxxxxxx>
> > ---
> > 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 d420cc5..e25e139 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();
> > }
>
> Applied, thanks. I agree this should go in stable.
I don't see this in Linus's tree anywhere, am I just missing it?
thanks,
greg k-h
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