diff options
| author | Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> | 2015-06-30 16:10:38 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2015-06-30 17:39:01 +0300 |
| commit | ee46f3c7d79c334e8bdc9947503e329dc27c0b47 (patch) | |
| tree | cfbe044d13fb0c4bdd9478278577a2a03b57bff9 /drivers/char | |
| parent | 2059ac3b1304cb6a82f9d90762dea9f556831627 (diff) | |
| download | linux-ee46f3c7d79c334e8bdc9947503e329dc27c0b47.tar.xz | |
drm/i915: Clear pipe's pll hw state in hsw_dp_set_ddi_pll_sel()
Similarly to what is done for SKL, clear the dpll_hw_state of the pipe
config in hsw_dp_set_ddi_pll_sel(), since it main contain stale values.
That can happen if a crtc that was previously driving an HDMI connector
switches to a DP connector. In that case, the wrpll field was left with
its old value, leading to warnings like the one below:
[drm:check_crtc_state [i915]] *ERROR* mismatch in dpll_hw_state.wrpll (expected 0xb035061f, found 0x00000000)
------------[ cut here ]------------
WARNING: CPU: 1 PID: 767 at drivers/gpu/drm/i915/intel_display.c:12324 check_crtc_state+0x975/0x10b0 [i915]()
pipe state doesn't match!
This regression was indroduced in
commit dd3cd74acf12723045a64f1f2c6298ac7b34a5d5
Author: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Date: Fri May 15 13:34:29 2015 +0300
drm/i915: Don't overwrite (e)DP PLL selection on SKL
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Tested-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/char')
0 files changed, 0 insertions, 0 deletions