linux-kernel - Re: [PATCH v2 1/2] misc: fastrpc: Deregister device nodes properly in error scenarios

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Message-ID: <7b9694ea-a4fc-43bf-b58b-8c479af18140@quicinc.com>
Date: Mon, 23 Dec 2024 16:11:51 +0530
From: Anandu Krishnan E <quic_anane@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC: <srinivas.kandagatla@...aro.org>, <linux-arm-msm@...r.kernel.org>,
        <gregkh@...uxfoundation.org>, <quic_bkumar@...cinc.com>,
        <linux-kernel@...r.kernel.org>, <quic_chennak@...cinc.com>,
        <dri-devel@...ts.freedesktop.org>, <arnd@...db.de>,
        stable
	<stable@...nel.org>
Subject: Re: [PATCH v2 1/2] misc: fastrpc: Deregister device nodes properly in
 error scenarios



On 12/23/2024 3:49 PM, Dmitry Baryshkov wrote:
> On Mon, Dec 23, 2024 at 03:31:00PM +0530, Anandu Krishnan E wrote:
>> During fastrpc_rpmsg_probe, if secure device node registration
>> succeeds but non-secure device node registration fails, the secure
>> device node deregister is not called during error cleanup. Add proper
>> exit paths to ensure proper cleanup in case of error.
>>
>> Fixes: 3abe3ab3cdab ("misc: fastrpc: add secure domain support")
>> Cc: stable <stable@...nel.org>
>> Signed-off-by: Anandu Krishnan E <quic_anane@...cinc.com>
>> ---
>>  drivers/misc/fastrpc.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> This triggers checkpatch warning. If it is due to c&p from some internal
> documentation, please fix it too.
Understood. I will fix the checkpatch warning in the next spin.

-Anandu
> 
>>
>> diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
>> index 48d08eeb2d20..ff144f0aa337 100644
>> --- a/drivers/misc/fastrpc.c
>> +++ b/drivers/misc/fastrpc.c
>> @@ -2344,7 +2344,7 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
>>  
>>  		err = fastrpc_device_register(rdev, data, false, domains[domain_id]);
>>  		if (err)
>> -			goto fdev_error;
>> +			goto populate_error;
>>  		break;
>>  	default:
>>  		err = -EINVAL;
>> -- 
>> 2.17.1
>>
>