As we want to be able to call i915_reset_engine and co from a softirq or
timer context, we need to be irqsafe at all timers. So we have to forgo
the simple spin_lock_irq for the full spin_lock_irqsave.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_gem.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 03874b50ada9..a3885adec78a 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3137,15 +3137,17 @@ i915_gem_reset_request(struct intel_engine_cs *engine,
*/
request = i915_gem_find_active_request(engine);
if (request) {
+ unsigned long flags;
+
i915_gem_context_mark_innocent(request->gem_context);
dma_fence_set_error(&request->fence, -EAGAIN);
/* Rewind the engine to replay the incomplete rq */
- spin_lock_irq(&engine->timeline.lock);
+ spin_lock_irqsave(&engine->timeline.lock, flags);
request = list_prev_entry(request, link);
if (&request->link == &engine->timeline.requests)
request = NULL;
- spin_unlock_irq(&engine->timeline.lock);
+ spin_unlock_irqrestore(&engine->timeline.lock, flags);
}
}
--
2.17.0
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