linux-kernel - RE: [PATCH v2 1/4]enable background operations for supported eMMC card

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Message-ID: <5D8008F58939784290FAB48F54975198320B3E49F6@shsmsx502.ccr.corp.intel.com>
Date:	Mon, 6 Dec 2010 20:34:29 +0800
From:	"Dong, Chuanxiao" <chuanxiao.dong@...el.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"cjb@...top.org" <cjb@...top.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"arjan@...ux.intel.com" <arjan@...ux.intel.com>,
	"alan@...ux.intel.com" <alan@...ux.intel.com>,
	"kmpark@...radead.org" <kmpark@...radead.org>
Subject: RE: [PATCH v2 1/4]enable background operations for supported eMMC
 card

> -----Original Message-----
> From: Arnd Bergmann [mailto:arnd@...db.de]
> Sent: Monday, December 06, 2010 8:29 PM
> To: Dong, Chuanxiao
> Cc: linux-mmc@...r.kernel.org; linux-kernel@...r.kernel.org; cjb@...top.org;
> akpm@...ux-foundation.org; arjan@...ux.intel.com; alan@...ux.intel.com;
> kmpark@...radead.org
> Subject: Re: [PATCH v2 1/4]enable background operations for supported eMMC
> card
> 
> On Friday 03 December 2010, Chuanxiao Dong wrote:
> > From 984adc755cf2f7966a89e510a50f085e314fe347 Mon Sep 17 00:00:00 2001
> > From: Chuanxiao Dong <chuanxiao.dong@...el.com>
> > Date: Mon, 22 Nov 2010 16:31:12 +0800
> > Subject: [PATCH 1/4] mmc: Enabled background operations feature if eMMC card
> supports
> 
> These headers don't belong into a submission. If you use git-send-email,
> they get cut off automatically, otherwise just remove them as you paste
> the patch into your mail client.
>
OK. I will remove them when the next submission.

> > Background operations is a new feature defined in eMMC4.41 standard.
> > Since this feature is opertional for eMMC card, so driver only enable
> 
> s/opertional/optional/
> > @@ -54,6 +54,8 @@ struct mmc_ext_csd {
> >  	unsigned int		sec_trim_mult;	/* Secure trim multiplier  */
> >  	unsigned int		sec_erase_mult;	/* Secure erase multiplier */
> >  	unsigned int		trim_timeout;		/* In milliseconds */
> > +	unsigned int		bkops:1; /* background support bit */
> > +	unsigned int		bkops_en:1; /* background enable bit */
> >  };
> 
> Bit fields are not encouraged for kernel internal data structures,
> just use "bool" variables here.

Thanks Arnd. I will fix this.
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