linux-kernel - [PATCH v2] media: venus: hfi: explicitly release IRQ during teardown

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Message-Id: <20250619074830.1708453-1-jorge.ramirez@oss.qualcomm.com>
Date: Thu, 19 Jun 2025 09:48:30 +0200
From: Jorge Ramirez-Ortiz <jorge.ramirez@....qualcomm.com>
To: jorge.ramirez@....qualcomm.com, quic_vgarodia@...cinc.com,
        quic_dikshita@...cinc.com, bryan.odonoghue@...aro.org,
        mchehab@...nel.org
Cc: linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2] media: venus: hfi: explicitly release IRQ during teardown

Ensure the IRQ is disabled - and all pending handlers completed - before
dismantling the interrupt routing and clearing related pointers.

This prevents any possibility of the interrupt triggering after the
handler context has been invalidated.

Fixes: d96d3f30c0f2 ("[media] media: venus: hfi: add Venus HFI files")
Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez@....qualcomm.com>
---

 v2:
    disable the handler and block until complete.
    allow devres to release and free the allocated irq

 drivers/media/platform/qcom/venus/hfi_venus.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/platform/qcom/venus/hfi_venus.c b/drivers/media/platform/qcom/venus/hfi_venus.c
index b5f2ea879950..ed003adb0282 100644
--- a/drivers/media/platform/qcom/venus/hfi_venus.c
+++ b/drivers/media/platform/qcom/venus/hfi_venus.c
@@ -1678,6 +1678,7 @@ void venus_hfi_destroy(struct venus_core *core)
 	venus_interface_queues_release(hdev);
 	mutex_destroy(&hdev->lock);
 	kfree(hdev);
+	disable_irq(core->irq);
 	core->ops = NULL;
 }
 
-- 
2.34.1