diff options
Diffstat (limited to 'debian/patches-rt/0010-drm-i915-Drop-the-irqs_disabled-check.patch')
| -rw-r--r-- | debian/patches-rt/0010-drm-i915-Drop-the-irqs_disabled-check.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/debian/patches-rt/0010-drm-i915-Drop-the-irqs_disabled-check.patch b/debian/patches-rt/0010-drm-i915-Drop-the-irqs_disabled-check.patch new file mode 100644 index 000000000..711f1de53 --- /dev/null +++ b/debian/patches-rt/0010-drm-i915-Drop-the-irqs_disabled-check.patch @@ -0,0 +1,39 @@ +From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Date: Fri, 1 Oct 2021 20:01:03 +0200 +Subject: [PATCH 10/10] drm/i915: Drop the irqs_disabled() check +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.15/older/patches-5.15.3-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(-) + +--- a/drivers/gpu/drm/i915/i915_request.c ++++ b/drivers/gpu/drm/i915/i915_request.c +@@ -559,7 +559,6 @@ bool __i915_request_submit(struct i915_r + + RQ_TRACE(request, "\n"); + +- GEM_BUG_ON(!irqs_disabled()); + lockdep_assert_held(&engine->sched_engine->lock); + + /* +@@ -668,7 +667,6 @@ void __i915_request_unsubmit(struct i915 + */ + RQ_TRACE(request, "\n"); + +- GEM_BUG_ON(!irqs_disabled()); + lockdep_assert_held(&engine->sched_engine->lock); + + /* |