Re: [Intel-gfx] [PATCH] drm/i915: Add delay on DPCD reads

2016-03-16 Thread Mika Kahola
On Tue, 2016-03-15 at 14:26 +0100, Daniel Vetter wrote: > On Tue, Mar 15, 2016 at 01:38:58PM +0200, Mika Kahola wrote: > > Additional 50 ms delay is needed between DPCD reads on HP Bizlink 1326 > > DP to VGA adapter. Having said that, I haven't noticed a need for > > additional delay between DPCD r

Re: [Intel-gfx] [PATCH] drm/i915: Add delay on DPCD reads

2016-03-15 Thread Daniel Vetter
On Tue, Mar 15, 2016 at 01:38:58PM +0200, Mika Kahola wrote: > Additional 50 ms delay is needed between DPCD reads on HP Bizlink 1326 > DP to VGA adapter. Having said that, I haven't noticed a need for > additional delay between DPCD reads on other DP-VGA dongles. > > While at it, let's replace md

[Intel-gfx] [PATCH] drm/i915: Add delay on DPCD reads

2016-03-15 Thread Mika Kahola
Additional 50 ms delay is needed between DPCD reads on HP Bizlink 1326 DP to VGA adapter. Having said that, I haven't noticed a need for additional delay between DPCD reads on other DP-VGA dongles. While at it, let's replace mdelay() with usleep_range() routine. Signed-off-by: Mika Kahola --- d