drm/i915: Also clear the punit's PDATA sideband register

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As the previous punit i/o may have failed, the contents of the PDATA are
undefined. Always clear it to 0 prior to sending the command.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170125134808.6152-2-chris@chris-wilson.co.uk
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>

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Chris Wilson 2017-01-25 13:48:08 +00:00

parent 9fcee2f77e

commit ed576a5ca4

1 changed files with 1 additions and 3 deletions

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drivers/gpu/drm/i915/intel_sideband.c

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