Commit 7e7129dc authored Nov 21, 2019 by Clint Taylor Committed by Lucas De Marchi Nov 26, 2019

drm/i915: Disable display interrupts during display IRQ handler



During the Display Interrupt Service routine the Display Interrupt
Enable bit must be disabled, The interrupts handled, then the
Display Interrupt Enable bit must be set to prevent possible missed
interrupts.

Bspec: 49212
V2: Change Title to remove SDE reference.
V3: Fix TAB spacing.

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Aditya Swarup <aditya.swarup@intel.com>

Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191121201455.2558-1-clinton.a.taylor@intel.com

parent 07130981

drivers/gpu/drm/i915/i915_irq.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -2484,7 +2484,11 @@ __gen11_irq_handler(struct drm_i915_private * const i915,
		* GEN11_DISPLAY_INT_CTL has same format as GEN8_MASTER_IRQ
		* for the display related bits.
		*/
		raw_reg_write(regs, GEN11_DISPLAY_INT_CTL, 0x0);
		gen8_de_irq_handler(i915, disp_ctl);
		raw_reg_write(regs, GEN11_DISPLAY_INT_CTL,
		GEN11_DISPLAY_IRQ_ENABLE);

		enable_rpm_wakeref_asserts(&i915->runtime_pm);
		}

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