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From: Vignesh R <vigneshr@ti.com>
To: Mark Brown <broonie@kernel.org>
Cc: Tony Lindgren <tony@atomide.com>,
	Brian Norris <computersforpeace@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Russell King <linux@arm.linux.org.uk>,
	"hramrach@gmail.com" <hramrach@gmail.com>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
	"linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>
Subject: Re: [PATCH v5 3/5] mtd: devices: m25p80: add support for mmap read request
Date: Wed, 24 Feb 2016 17:51:08 +0530	[thread overview]
Message-ID: <56CDA034.7050607@ti.com> (raw)
In-Reply-To: <56C49B9E.8060506@ti.com>



On 02/17/2016 09:41 PM, R, Vignesh wrote:
> 
> 
> On 02/16/2016 06:08 PM, Mark Brown wrote:
>> On Tue, Feb 16, 2016 at 01:30:49PM +0530, Vignesh R wrote:
>>> On 02/13/2016 04:07 AM, Mark Brown wrote:
>>>> On Thu, Feb 11, 2016 at 11:03:50AM +0530, Vignesh R wrote:
>>>>> On 02/10/2016 01:06 AM, Mark Brown wrote:
>>
>>>>>> Looking at this I can't help but think that spi_flash_read() ought to
>>>>>> have the stub in rather than the caller.  But given that we're pretty
>>>>>> much only ever expecting one user I'm not 100% sure it actually matters.
>>
>>>>> Well, my initial patch set passed long list of arguments to
>>>>> spi_flash_read(), but Brian suggested to use struct[1] in order to avoid
>>>>> unnecessary churn when things need changed in the API.
>>
>>>> I don't see what that has to do with my point?
>>
>>> AFAIU, your previous comment was to move initialization of
>>> spi_flash_read_message struct to spi_flash_read(). This would mean
>>
>> No, not at all.  I'm talking about how we handle the case where we don't
>> have hardware support for this and need to implement it in software -
>> currently that's in a separate place to the place where we call the
>> driver.
>>
> 
> Yeah, but AFAIK, hardware accelerated read support is applicable for
> m25p80 flashes only, I doubt whether spi_flash_read() will be used by
> other types. I felt keeping the software implementation in m25p80_read()
> will be consistent with m25p80_write().

Is there any further work required on the patch? If not, what's the plan
to merge this patch?

-- 
Regards
Vignesh

  reply	other threads:[~2016-02-24 12:21 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-11  4:09 [PATCH v5 0/5] Add memory mapped read support for ti-qspi Vignesh R
2015-12-11  4:09 ` [PATCH v5 1/5] spi: introduce accelerated read support for spi flash devices Vignesh R
     [not found] ` <1449807000-6457-1-git-send-email-vigneshr-l0cyMroinI0@public.gmane.org>
2015-12-11  4:09   ` [PATCH v5 2/5] spi: spi-ti-qspi: add mmap mode read support Vignesh R
     [not found]     ` <1449807000-6457-3-git-send-email-vigneshr-l0cyMroinI0@public.gmane.org>
2016-02-09 19:43       ` Applied "spi: spi-ti-qspi: add mmap mode read support" to the spi tree Mark Brown
2015-12-11  4:09 ` [PATCH v5 3/5] mtd: devices: m25p80: add support for mmap read request Vignesh R
     [not found]   ` <1449807000-6457-4-git-send-email-vigneshr-l0cyMroinI0@public.gmane.org>
2016-02-09 19:36     ` Mark Brown
     [not found]       ` <20160209193616.GN13270-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-02-11  5:33         ` Vignesh R
2016-02-12 22:37           ` Mark Brown
     [not found]             ` <20160212223711.GD18988-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-02-16  8:00               ` Vignesh R
     [not found]                 ` <56C2D731.6050306-l0cyMroinI0@public.gmane.org>
2016-02-16 12:38                   ` Mark Brown
     [not found]                     ` <20160216123854.GJ18327-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-02-17 16:11                       ` R, Vignesh
2016-02-24 12:21                         ` Vignesh R [this message]
2015-12-11  4:09 ` [PATCH v5 4/5] ARM: dts: DRA7: add entry for qspi mmap region Vignesh R
2015-12-11 15:09   ` Rob Herring
2015-12-17 18:45     ` Tony Lindgren
2015-12-18  5:50       ` Vignesh R
     [not found]         ` <56739EB4.6040804-l0cyMroinI0@public.gmane.org>
2015-12-18 16:42           ` Tony Lindgren
2015-12-11  4:10 ` [PATCH v5 5/5] ARM: dts: AM4372: " Vignesh R
2015-12-21 12:03 ` [PATCH v5 0/5] Add memory mapped read support for ti-qspi Vignesh R
2016-01-05  5:20 ` Vignesh R
2016-01-05 18:19   ` Mark Brown

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