[Intel-gfx] [PATCH] drm/i915: Depend on !PREEMPT_RT.

Sebastian Andrzej Siewior bigeasy at linutronix.de
Mon Feb 14 18:59:08 UTC 2022

There are a few sections in the driver which are not compatible with
PREEMPT_RT. They trigger warnings and can lead to deadlocks at runtime.

Disable the i915 driver on a PREEMPT_RT enabled kernel. This way
PREEMPT_RT itself can be enabled without needing to address the i915
issues first. The RT related patches are still in RT queue and will be
handled later.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
 drivers/gpu/drm/i915/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
index a4c94dc2e2164..3aa719d5a0f0d 100644
--- a/drivers/gpu/drm/i915/Kconfig
+++ b/drivers/gpu/drm/i915/Kconfig
@@ -3,6 +3,7 @@ config DRM_I915
 	tristate "Intel 8xx/9xx/G3x/G4x/HD Graphics"
 	depends on DRM
 	depends on X86 && PCI
+	depends on !PREEMPT_RT
 	select INTEL_GTT
 	# we need shmfs for the swappable backing store, and in particular

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