From: Nirmoy Das <[email protected]>
commit e92eb246feb9019b0b137706c934b8891cdfe3c2 upstream.
debug_active_activate() expected ref->count to be zero
which is not true anymore as __i915_active_activate() calls
debug_active_activate() after incrementing the count.
v2: No need to check for "ref->count == 1" as __i915_active_activate()
already make sure of that(Janusz).
Fixes: 04240e30ed06 ("drm/i915: Skip taking acquire mutex for no ref->active
callback")
Cc: Chris Wilson <[email protected]>
Cc: Tvrtko Ursulin <[email protected]>
Cc: Thomas Hellström <[email protected]>
Cc: Andi Shyti <[email protected]>
Cc: [email protected]
Cc: Janusz Krzysztofik <[email protected]>
Cc: <[email protected]> # v5.10+
Signed-off-by: Nirmoy Das <[email protected]>
Reviewed-by: Janusz Krzysztofik <[email protected]>
Reviewed-by: Andrzej Hajda <[email protected]>
Link:
https://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit bfad380c542438a9b642f8190b7fd37bc77e2723)
Signed-off-by: Jani Nikula <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/i915/i915_active.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/gpu/drm/i915/i915_active.c
+++ b/drivers/gpu/drm/i915/i915_active.c
@@ -92,8 +92,7 @@ static void debug_active_init(struct i91
static void debug_active_activate(struct i915_active *ref)
{
lockdep_assert_held(&ref->tree_lock);
- if (!atomic_read(&ref->count)) /* before the first inc */
- debug_object_activate(ref, &active_debug_desc);
+ debug_object_activate(ref, &active_debug_desc);
}
static void debug_active_deactivate(struct i915_active *ref)
