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Diffstat (limited to '')
| -rw-r--r-- | debian/patches-rt/0030-drm-i915-Drop-the-irqs_disabled-check.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/debian/patches-rt/0030-drm-i915-Drop-the-irqs_disabled-check.patch b/debian/patches-rt/0030-drm-i915-Drop-the-irqs_disabled-check.patch new file mode 100644 index 000000000..4d49e26f7 --- /dev/null +++ b/debian/patches-rt/0030-drm-i915-Drop-the-irqs_disabled-check.patch @@ -0,0 +1,45 @@ +From 6779399c1acfc91f6e9b0bd4dc4abb4f3cb30c78 Mon Sep 17 00:00:00 2001 +From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Date: Fri, 1 Oct 2021 20:01:03 +0200 +Subject: [PATCH 30/62] drm/i915: Drop the irqs_disabled() check +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.1/older/patches-6.1.69-rt21.tar.xz + +The !irqs_disabled() check triggers on PREEMPT_RT even with +i915_sched_engine::lock acquired. The reason is the lock is transformed +into a sleeping lock on PREEMPT_RT and does not disable interrupts. + +There is no need to check for disabled interrupts. The lockdep +annotation below already check if the lock has been acquired by the +caller and will yell if the interrupts are not disabled. + +Remove the !irqs_disabled() check. + +Reported-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + drivers/gpu/drm/i915/i915_request.c | 2 -- + 1 file changed, 2 deletions(-) + +diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c +index 7ce126a01cbf..64a032dfaa90 100644 +--- a/drivers/gpu/drm/i915/i915_request.c ++++ b/drivers/gpu/drm/i915/i915_request.c +@@ -609,7 +609,6 @@ bool __i915_request_submit(struct i915_request *request) + + RQ_TRACE(request, "\n"); + +- GEM_BUG_ON(!irqs_disabled()); + lockdep_assert_held(&engine->sched_engine->lock); + + /* +@@ -718,7 +717,6 @@ void __i915_request_unsubmit(struct i915_request *request) + */ + RQ_TRACE(request, "\n"); + +- GEM_BUG_ON(!irqs_disabled()); + lockdep_assert_held(&engine->sched_engine->lock); + + /* +-- +2.43.0 + |