Re: [PATCH] drm/i2c/tda9950.c: set MAX_RETRIES for errors only

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On Thu, Sep 13, 2018 at 10:33:35AM +0100, Russell King - ARM Linux wrote:
> Hi Hans,
> 
> I'll pick it up in due course.
> 
> Thanks.
> 
> On Tue, Sep 11, 2018 at 08:41:59AM +0200, Hans Verkuil wrote:
> > Russell (or someone else), can you Ack this patch? I'd like to get this
> > for 4.20.
> > 
> > Thanks!
> > 
> > 	Hans
> > 
> > On 08/27/2018 02:28 PM, Hans Verkuil wrote:
> > > The CEC_TX_STATUS_MAX_RETRIES should be set for errors only to
> > > prevent the CEC framework from retrying the transmit. If the
> > > transmit was successful, then don't set this flag.
> > > 
> > > Found by running 'cec-compliance -A' on a beaglebone box.
> > > 
> > > Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>

Since the tda driver is now a brideg one, would make sense to maintain it
as part of drm-misc? Hans could push directly then.
-Daniel

> > > ---
> > >  drivers/gpu/drm/i2c/tda9950.c | 3 ++-
> > >  1 file changed, 2 insertions(+), 1 deletion(-)
> > > 
> > > diff --git a/drivers/gpu/drm/i2c/tda9950.c b/drivers/gpu/drm/i2c/tda9950.c
> > > index 5d2f0d548469..4a14fc3b5011 100644
> > > --- a/drivers/gpu/drm/i2c/tda9950.c
> > > +++ b/drivers/gpu/drm/i2c/tda9950.c
> > > @@ -191,7 +191,8 @@ static irqreturn_t tda9950_irq(int irq, void *data)
> > >  			break;
> > >  		}
> > >  		/* TDA9950 executes all retries for us */
> > > -		tx_status |= CEC_TX_STATUS_MAX_RETRIES;
> > > +		if (tx_status != CEC_TX_STATUS_OK)
> > > +			tx_status |= CEC_TX_STATUS_MAX_RETRIES;
> > >  		cec_transmit_done(priv->adap, tx_status, arb_lost_cnt,
> > >  				  nack_cnt, 0, err_cnt);
> > >  		break;
> > > 
> > 
> 
> -- 
> RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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