[PATCH] ASoC: sti: initialize player IRQ lock before requesting IRQ

[Runyu Xiao]

uni_player_init() registers the shared IRQ before initializing
player->irq_lock. A pending interrupt can invoke the handler while
the lock is still uninitialized.

Initialize the IRQ lock before registering the handler so the interrupt
path always sees valid lock state.

Fixes: d05d862ead8e ("ASoC: STI: Fix null ptr deference in IRQ handler")
Cc: stable@xxxxxxxxxxxxxxx
Assisted-by: Codex:GPT-5
Signed-off-by: Runyu Xiao <runyu.xiao@xxxxxxxxxx>
---
 sound/soc/sti/uniperif_player.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sti/uniperif_player.c b/sound/soc/sti/uniperif_player.c
index e4b9799ad..3537dd209 100644
--- a/sound/soc/sti/uniperif_player.c
+++ b/sound/soc/sti/uniperif_player.c
@@ -1095,6 +1095,8 @@ int uni_player_init(struct platform_device *pdev,
 		}
 	}
 
+	spin_lock_init(&player->irq_lock);
+
 	ret = devm_request_irq(&pdev->dev, player->irq,
 			       uni_player_irq_handler, IRQF_SHARED,
 			       dev_name(&pdev->dev), player);
@@ -1104,8 +1106,6 @@ int uni_player_init(struct platform_device *pdev,
 	}
 
 	mutex_init(&player->ctrl_lock);
-	spin_lock_init(&player->irq_lock);
-
 	/* Ensure that disabled by default */
 	SET_UNIPERIF_CONFIG_BACK_STALL_REQ_DISABLE(player);
 	SET_UNIPERIF_CTRL_ROUNDING_OFF(player);
-- 
2.34.1