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drm/i915: Unconditionally clear the pm/guc GT IIR upon acking 

Having stored the IIR for action, we should always clear it.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180802100631.31305-2-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2018-08-02 11:06:29 +01:00
parent 46e831abe8
commit f4de7794de
1 changed files with 2 additions and 5 deletions
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7
drivers/gpu/drm/i915/i915_irq.c
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@ -1534,11 +1534,8 @@ static void gen8_gt_irq_ack(struct drm_i915_private *i915,
if (master_ctl & (GEN8_GT_PM_IRQ | GEN8_GT_GUC_IRQ)) {
gt_iir[2] = raw_reg_read(regs, GEN8_GT_IIR(2));
if (likely(gt_iir[2] & (i915->pm_rps_events |
i915->pm_guc_events)))
raw_reg_write(regs, GEN8_GT_IIR(2),
gt_iir[2] & (i915->pm_rps_events |
i915->pm_guc_events));
if (likely(gt_iir[2]))
raw_reg_write(regs, GEN8_GT_IIR(2), gt_iir[2]);
}
if (master_ctl & GEN8_GT_VECS_IRQ) {