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drm/i915: Mask out the HPD irq bits before setting them individually.

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To disable previously enabled HPD IRQs we need to reset them and
set the enabled ones individually.

Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Egbert Eich 2013-04-16 13:36:56 +02:00 committed by Daniel Vetter
parent 821450c693
commit 995e6b3dcf
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/i915/i915_irq.c
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@ -2128,9 +2128,11 @@ static void ibx_hpd_irq_setup(struct drm_device *dev)
u32 hotplug;
if (HAS_PCH_IBX(dev)) {
mask &= ~SDE_HOTPLUG_MASK;
list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head)
mask |= hpd_ibx[intel_encoder->hpd_pin];
} else {
mask &= ~SDE_HOTPLUG_MASK_CPT;
list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head)
mask |= hpd_cpt[intel_encoder->hpd_pin];
}