linux-kernel - Re: [PATCH v2 1/2] scsi: hisi_sas: Remove unnecessary devm

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Date:   Tue, 12 Jan 2021 10:13:13 +0100
From:   Bean Huo <huobean@...il.com>
To:     John Garry <john.garry@...wei.com>, alim.akhtar@...sung.com,
        avri.altman@....com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, ebiggers@...gle.com, satyat@...gle.com,
        shipujin.t@...il.com
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bean Huo <beanhuo@...ron.com>
Subject: Re: [PATCH v2 1/2] scsi: hisi_sas: Remove unnecessary devm_kfree

On Tue, 2021-01-12 at 09:03 +0000, John Garry wrote:
> On 11/01/2021 23:10, Bean Huo wrote:
> > From: Bean Huo <beanhuo@...ron.com>
> > 
> > The memory allocated with devm_kzalloc() is freed automatically
> > no need to explicitly call devm_kfree.
> > 
> 
> This change is not right - we use devm_kfree() to manually release
> the 
> devm-allocated debugfs memories upon memory allocation failure for 
> driver debugfs feature during probe. The reason is that we allow the 
> driver probe can still continue (for this failure).
> 
> Thanks,
> John

yea, I see, probe didn't deal with ENOMEM error. will drop this change.
thanks.

Bean