linux-kernel - RE: [PATCH] scsi: ufs-bsg: Remove ufs_bsg_get_query_desc

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Message-ID: <BY5PR04MB63270395126089C821E9B72DED549@BY5PR04MB6327.namprd04.prod.outlook.com>
Date:   Wed, 28 Sep 2022 17:01:46 +0000
From:   Arthur Simchaev <Arthur.Simchaev@....com>
To:     Arthur Simchaev <Arthur.Simchaev@....com>,
        Bean Huo <huobean@...il.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "beanhuo@...ron.com" <beanhuo@...ron.com>
CC:     "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Daniil Lunev <dlunev@...omium.org>,
        Avri Altman <Avri.Altman@....com>,
        Avi Shchislowski <Avi.Shchislowski@....com>
Subject: RE: [PATCH] scsi: ufs-bsg: Remove ufs_bsg_get_query_desc_size
 function

Hi Bean. 

I think in any case we need remove the redundant  ufs_bsg_get_query_desc_size
function from ufs_bsg. As done in this patch and submit the another one in order to remove 
the desc size check in ufshcd.c entirely. 
Are you agree?  

Regards
Arthur

> -----Original Message-----
> From: Arthur Simchaev <Arthur.Simchaev@....com>
> Sent: Wednesday, September 28, 2022 5:42 PM
> To: Bean Huo <huobean@...il.com>; martin.petersen@...cle.com;
> beanhuo@...ron.com
> Cc: linux-scsi@...r.kernel.org; linux-kernel@...r.kernel.org; Daniil Lunev
> <dlunev@...omium.org>; Avri Altman <Avri.Altman@....com>; Avi
> Shchislowski <Avi.Shchislowski@....com>
> Subject: RE: [PATCH] scsi: ufs-bsg: Remove ufs_bsg_get_query_desc_size
> function
> 
> CAUTION: This email originated from outside of Western Digital. Do not click
> on links or open attachments unless you recognize the sender and know that
> the content is safe.
> 
> 
> Agree with you. Will change & send the patch.
> 
> Regards
> Arthur
> 
> > -----Original Message-----
> > From: Bean Huo <huobean@...il.com>
> > Sent: Wednesday, September 28, 2022 1:36 PM
> > To: Arthur Simchaev <Arthur.Simchaev@....com>;
> > martin.petersen@...cle.com; beanhuo@...ron.com
> > Cc: linux-scsi@...r.kernel.org; linux-kernel@...r.kernel.org; Daniil Lunev
> > <dlunev@...omium.org>; Avri Altman <Avri.Altman@....com>; Avi
> > Shchislowski <Avi.Shchislowski@....com>
> > Subject: Re: [PATCH] scsi: ufs-bsg: Remove ufs_bsg_get_query_desc_size
> > function
> >
> > CAUTION: This email originated from outside of Western Digital. Do not click
> > on links or open attachments unless you recognize the sender and know
> that
> > the content is safe.
> >
> >
> > On Wed, 2022-09-28 at 08:33 +0000, Arthur Simchaev wrote:
> > > Hi Bean
> > >
> > > In case you don't have any comments I will appreciate if you will add
> > > "reviewed by" to the patch.
> > >
> > > Regards
> > > Arthur
> >
> >
> > Hi Arthur,
> >
> > I'm thinking we should remove the desc size check in ufshcd.c entirely.
> > Just read any descriptor with a maximum size of QUERY_DESC_MAX_SIZE .
> > For user space queries, ufs_bsg reads data of the maximum length and
> > returns the requested length data. Thus can improve code readability
> > and save CPU cycles, also can fix your concern.
> >
> > I don't know how about others' opinion?
> >
> > Kind regards,
> > Bean
> >
> >