| commit | 151268821e6f08956b28b6ff90fae187a5b230b8 | [log] [tgz] |
|---|---|---|
| author | Matt Roper <matthew.d.roper@intel.com> | Thu Dec 03 11:37:40 2015 -0800 |
| committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | Wed Jan 06 11:35:29 2016 +0100 |
| tree | f337a00ef44c248b8d700bf28c8dea1c4846718e | |
| parent | ee91a15972cc70efa4d17b4bbdb61ff314528110 [diff] |
drm/i915: Add extra paranoia to ILK watermark calculations Our low-level watermark calculation functions don't get called when the CRTC is disabled or the relevant plane is invisible, so they should never see a zero htotal or zero bpp. However add some checks to ensure this is true so that we don't wind up dividing by zero if we make a mistake elsewhere in the driver (which the atomic watermark series has revealed we might be). References: http://lists.freedesktop.org/archives/intel-gfx/2015-October/077370.html Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1449171462-30763-6-git-send-email-matthew.d.roper@intel.com Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>