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From: Prasanna Kumar T S M <ptsm@linux.microsoft.com>
To: Borislav Petkov <bp@alien8.de>
Cc: shubhrajyoti.datta@amd.com, tony.luck@intel.com,
	linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Subject: Re: [PATCH 2/5] EDAC/versalnet: Release reference to remoteproc device in remove
Date: Mon, 23 Mar 2026 12:55:28 +0530	[thread overview]
Message-ID: <a499a623-252b-433f-a2de-784fe2016b3d@linux.microsoft.com> (raw)
In-Reply-To: <20260322155947.GAacAR8z1cKR7pG1it@fat_crate.local>

Hi Boris,

On 22-03-2026 21:29, Borislav Petkov wrote:
> On Sun, Mar 22, 2026 at 06:11:34AM -0700, Prasanna Kumar T S M wrote:
>> The rproc reference acquired via rproc_get_by_phandle() during probe
>> is not released in mc_remove(), causing a reference count leak. Add
>> the missing rproc_put() call.
>>
>> Fixes: d5fe2fec6c40d ("EDAC: Add a driver for the AMD Versal NET DDR controller")
>> Cc: stable@vger.kernel.org
>> Signed-off-by: Prasanna Kumar T S M <ptsm@linux.microsoft.com>
>> ---
>>   drivers/edac/versalnet_edac.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/edac/versalnet_edac.c b/drivers/edac/versalnet_edac.c
>> index f70243bc8a7a..28f5036f381c 100644
>> --- a/drivers/edac/versalnet_edac.c
>> +++ b/drivers/edac/versalnet_edac.c
>> @@ -958,6 +958,7 @@ static void mc_remove(struct platform_device *pdev)
>>   	cdx_mcdi_finish(priv->mcdi);
>>   	unregister_rpmsg_driver(&amd_rpmsg_driver);
>>   	rproc_shutdown(priv->mcdi->r5_rproc);
>> +	rproc_put(priv->mcdi->r5_rproc);
>>   }
>>   
>>   static const struct of_device_id amd_edac_match[] = {
>> -- 
> 
> Why is this a separate patch and not part of patch 1?

I can merge this and the previous into a single patch. Will do as part 
of v2.

> 
> Also, do you have the hardware to test this on? IOW, have you tested those
> patches?

Yes, I do. Tested the change using 6.6 kernel with back ported driver.

Thanks,
Prasanna Kumar


  reply	other threads:[~2026-03-23  7:25 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-22 13:11 [PATCH 1/5] EDAC/versalnet: Fix teardown ordering in mc_remove() Prasanna Kumar T S M
2026-03-22 13:11 ` [PATCH 2/5] EDAC/versalnet: Release reference to remoteproc device in remove Prasanna Kumar T S M
2026-03-22 15:59   ` Borislav Petkov
2026-03-23  7:25     ` Prasanna Kumar T S M [this message]
2026-03-22 13:11 ` [PATCH 3/5] EDAC/versalnet: Fix memory leak in remove and probe error paths Prasanna Kumar T S M
2026-03-22 19:15   ` Borislav Petkov
2026-03-22 13:11 ` [PATCH 4/5] EDAC/versalnet: Fix device_register() error handling in init_one_mc() Prasanna Kumar T S M
2026-03-22 16:10   ` Borislav Petkov
2026-03-23  7:08     ` Prasanna Kumar T S M
2026-03-24 11:23       ` Borislav Petkov
2026-03-24 12:16         ` Borislav Petkov
2026-03-22 13:11 ` [PATCH 5/5] EDAC/versalnet: Fix device name memory leak Prasanna Kumar T S M
2026-03-22 16:15   ` Borislav Petkov
2026-03-23  6:59     ` Prasanna Kumar T S M
2026-03-26 17:23   ` kernel test robot

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