drm/i915/skl: Don't clear all watermarks when updating. (v2)
Clearing the watermarks for all pipes/planes when updating the
watermarks for a single CRTC change seems like the wrong thing to
do here. As is, this code will ony update any pipe/plane watermarks
that need updating and leave the remaining set to zero. Later, the
watermark checks in check_wm_state() will flag these zero'd out pipe/plane
watermarks and throw errors.
By clearing only the watermark values associated with the specific crtc
the other watermark values may remain unchanged.
v2: Make sure all the dirty flags are cleared. Damien
Clear all values assoicated with crtc/pipe being updated. Damien
Signed-off-by: Bob Paauwe <bob.j.paauwe@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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