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From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Yaniv Gardi <ygardi-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
	Alim Akhtar <alim.akhtar-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
	kbuild test robot <lkp-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	kbuild-all-JC7UmRfGjtg@public.gmane.org,
	linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	"James E.J. Bottomley" <JBottomley-wo1vFcy6AUs@public.gmane.org>,
	vinayak holikatti
	<vinholikatti-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Amit Kachhap
	<amit.daniel-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
	Seungwon Jeon <essuuj-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	"devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH v3 13/13] scsi: ufs: Add exynos ufs platform data
Date: Mon, 05 Oct 2015 16:47:02 +0200	[thread overview]
Message-ID: <18249936.O5bjYFEGcY@wuerfel> (raw)
In-Reply-To: <CAL_JsqJWzqMkkMH8myFX1eeuV-U25Ri_nWhjj2mb3AWh5tzDZA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

On Monday 05 October 2015 09:11:33 Rob Herring wrote:
> On Mon, Oct 5, 2015 at 4:06 AM, Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org> wrote:
> > On Monday 05 October 2015 13:44:29 Alim Akhtar wrote:
> >>
> >> On 10/01/2015 04:59 PM, Arnd Bergmann wrote:
> >> > On Thursday 01 October 2015 18:46:34 kbuild test robot wrote:
> >> > Ah, this seems to be a case of layering violation. It would be best to
> >> > restructure the code so that the exynos driver registers a platform_driver
> >> > by itself for the respective DT compatible string, and then calls
> >> > into the common code from its probe function, rather than having the
> >> > generic driver know about the specific backends.
> >> >
> >> > That approach will also make the generic driver more scalable as we
> >> > add further chip-specific variations, and matches what we do in other
> >> > drivers.
> >> >
> >>
> >> Looks like some discussions on ufs variant driver probe method happened
> >> here [1] few months back.
> >> [1]-> https://lkml.org/lkml/2015/6/3/180
> >
> > Hmm, too bad we didn't catch it then, it's much more work to fix now.
> 
> What you suggested is what is being implemented[1]. It is not merged
> yet. The core is a library and the platform specific parts create the
> driver.
> 
> Rob
> 
> [1] https://lkml.org/lkml/2015/9/2/364

Ah, good. Sorry for the misunderstanding on my side.

	Arnd
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  parent reply	other threads:[~2015-10-05 14:47 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-01  8:09 [PATCH v3 00/13] exynos-ufs: add support for Exynos Alim Akhtar
2015-10-01  8:09 ` [PATCH v3 01/13] Documentation: samsung-phy: Add dt bindings for UFS Alim Akhtar
2015-10-01  8:09 ` [PATCH v3 02/13] phy: exynos-ufs: add UFS PHY driver for EXYNOS SoC Alim Akhtar
     [not found]   ` <1443686970-28104-3-git-send-email-alim.akhtar-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2015-10-01  8:41     ` kbuild test robot
2015-10-01  8:41   ` [PATCH] phy: exynos-ufs: fix platform_no_drv_owner.cocci warnings kbuild test robot
2015-10-01 11:04   ` [RFC PATCH] phy: exynos-ufs: exynos_ufs_phy_calibrate() can be static kbuild test robot
2015-10-13 11:38     ` Alim Akhtar
     [not found]       ` <561CED52.9010806-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2015-10-13 12:58         ` [kbuild-all] " Fengguang Wu
2015-10-13 14:02       ` Kishon Vijay Abraham I
2015-10-01 11:04   ` [PATCH v3 02/13] phy: exynos-ufs: add UFS PHY driver for EXYNOS SoC kbuild test robot
2015-10-01  8:09 ` [PATCH v3 03/13] scsi: ufs: add quirk to contain unconformable utrd field Alim Akhtar
2015-10-01  8:09 ` [PATCH v3 04/13] scsi: ufs: add quirk to fix mishandling utrlclr/utmrlclr Alim Akhtar
2015-10-01  8:09 ` [PATCH v3 05/13] scsi: ufs: add quirk not to allow reset of interrupt aggregation Alim Akhtar
2015-10-01  8:09 ` [PATCH v3 06/13] scsi: ufs: add quirk to enable host controller without hce Alim Akhtar
     [not found] ` <1443686970-28104-1-git-send-email-alim.akhtar-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2015-10-01  8:09   ` [PATCH v3 07/13] scsi: ufs: add specific callback for nexus type Alim Akhtar
2015-10-01  8:09 ` [PATCH v3 08/13] scsi: ufs: add add specific callback for hibern8 Alim Akhtar
2015-10-01  8:09 ` [PATCH v3 09/13] scsi: ufs: make ufshcd_config_pwr_mode of non-static func Alim Akhtar
2015-10-01  8:09 ` [PATCH v3 10/13] scsi: ufs: return value of pwr_change_notify Alim Akhtar
2015-10-01  8:09 ` [PATCH v3 11/13] Documentation: devicetree: ufs: Add DT bindings for exynos UFS host controller Alim Akhtar
2015-10-01 11:37   ` Arnd Bergmann
2015-10-13 11:36     ` Alim Akhtar
2015-10-13 12:10       ` Arnd Bergmann
2015-10-01  8:09 ` [PATCH v3 12/13] scsi: ufs-exynos: add UFS host support for Exynos SoCs Alim Akhtar
     [not found]   ` <1443686970-28104-13-git-send-email-alim.akhtar-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2015-10-01 12:12     ` Arnd Bergmann
2015-10-13 11:19       ` Alim Akhtar
     [not found]         ` <561CE8CB.9010102-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2015-10-13 11:38           ` Arnd Bergmann
2015-10-13 11:45             ` Alim Akhtar
2015-10-01  8:09 ` [PATCH v3 13/13] scsi: ufs: Add exynos ufs platform data Alim Akhtar
2015-10-01 10:04   ` kbuild test robot
     [not found]   ` <1443686970-28104-14-git-send-email-alim.akhtar-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2015-10-01 10:14     ` kbuild test robot
2015-10-01 10:46   ` kbuild test robot
     [not found]     ` <201510011845.GN7Kisc4%fengguang.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-10-01 11:29       ` Arnd Bergmann
2015-10-05  8:14         ` Alim Akhtar
2015-10-05  9:06           ` Arnd Bergmann
2015-10-05 14:11             ` Rob Herring
     [not found]               ` <CAL_JsqJWzqMkkMH8myFX1eeuV-U25Ri_nWhjj2mb3AWh5tzDZA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-10-05 14:47                 ` Arnd Bergmann [this message]
2015-10-05 15:20                 ` Alim Akhtar

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