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

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Message-ID: <1bdf289b-5eec-d5de-a08b-6c7a772e15a3@quicinc.com>
Date: Mon, 16 Jun 2025 20:14:36 +0530
From: Vikash Garodia <quic_vgarodia@...cinc.com>
To: Jorge Ramirez <jorge.ramirez@....qualcomm.com>
CC: <quic_dikshita@...cinc.com>, <bryan.odonoghue@...aro.org>,
        <loic.poulain@....qualcomm.com>, <mchehab@...nel.org>,
        <hans.verkuil@...co.com>, <linux-media@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] media: venus: hfi: explicitly release IRQ during teardown

Hi Jorge,

On 6/16/2025 6:29 PM, Jorge Ramirez wrote:
> On 16/06/25 17:26:24, Vikash Garodia wrote:
>>
>> On 6/12/2025 1:59 PM, Jorge Ramirez-Ortiz wrote:
>>> Ensure the IRQ is released before dismantling the ISR handler 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>
>>> ---
>>>  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..d9d62d965bcf 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);
>>> +	devm_free_irq(core->dev, core->irq, core);
>> Could you please check and add the handling here [1] as well ?
>>
>> [1]
>> https://elixir.bootlin.com/linux/v6.16-rc1/source/drivers/media/platform/qcom/venus/core.c#L427
> 
> hi Vikash, sorry I dont get your point - what do you mean?
IRQ need to be freed even for error cases during venus_probe().

Regards,
Vikash
> 
>>
>> Regards,
>> Vikash
>>>  	core->ops = NULL;
>>>  }
>>>