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From: Huang Shijie <shijie8@gmail.com>
To: Brian Norris <computersforpeace@gmail.com>
Cc: Marek Vasut <marex@denx.de>, Huang Shijie <b32955@freescale.com>,
	zajec5@gmail.com, linux-mtd@lists.infradead.org
Subject: Re: [PATCH 6/8] mtd: spi-nor: drop replaceable wait-till-ready function pointer
Date: Sat, 9 Aug 2014 17:53:03 +0800	[thread overview]
Message-ID: <20140809095301.GA1076@localhost.localdomain> (raw)
In-Reply-To: <1407374222-8448-7-git-send-email-computersforpeace@gmail.com>

On Wed, Aug 06, 2014 at 06:17:00PM -0700, Brian Norris wrote:
> We don't need to expose a 'wait-till-ready' interface to drivers. Status
> register polling should be handled by the core spi-nor.c library, and as
> of now, I see no need to provide a special driver-specific hook for it.

Please do not drop this hook, please see why we add this hook:
http://lists.infradead.org/pipermail/linux-mtd/2013-December/050561.html

"
The default implementation would do just as you suggest, and I would
expect most H/W drivers to use the default implementation.  However, some H/W
Controllers can automate the polling of status registers, so having a hook allows
the driver override the default behaviour.
"

The spi-nor framework will used by more drivers besides the m25p80 and
fsl-quadspi. Some NOR flash controller may be very strange.

thanks
Huang Shijie

  parent reply	other threads:[~2014-08-09  9:53 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-07  1:16 [PATCH 0/8] mtd: spi-nor: refactor wait-till-ready Brian Norris
2014-08-07  1:16 ` [PATCH 1/8] mtd: spi-nor: eliminate duplicate spi_nor_wait_till_{, fsr}_ready() code Brian Norris
2014-08-07 14:23   ` Marek Vasut
2014-08-09  6:25   ` Huang Shijie
2014-08-11 17:59     ` Brian Norris
2014-09-10  7:26   ` [PATCH v2 1/10] " Brian Norris
2014-08-07  1:16 ` [PATCH 2/8] mtd: spi-nor: handle timeout errors in spi_nor_write() Brian Norris
2014-08-07 14:23   ` Marek Vasut
2014-08-09  7:37   ` Huang Shijie
2014-08-07  1:16 ` [PATCH 3/8] mtd: spi-nor: move "wait-till-ready" checks into erase/write functions Brian Norris
2014-08-07 14:24   ` Marek Vasut
2014-08-09  8:42   ` Huang Shijie
2014-08-11 18:23     ` Brian Norris
2014-08-12  1:37       ` Huang Shijie
2014-08-07  1:16 ` [PATCH 4/8] mtd: m25p80: drop wait-till-ready checks Brian Norris
2014-08-07 14:24   ` Marek Vasut
2014-08-07  1:16 ` [PATCH 5/8] mtd: fsl-quadspi: " Brian Norris
2014-08-07 14:24   ` Marek Vasut
2014-08-07  1:17 ` [PATCH 6/8] mtd: spi-nor: drop replaceable wait-till-ready function pointer Brian Norris
2014-08-07 14:25   ` Marek Vasut
2014-08-09  9:53   ` Huang Shijie [this message]
2014-08-11 18:43     ` Brian Norris
2014-08-12  1:16       ` Huang Shijie
2014-09-10  7:02         ` Brian Norris
2014-08-12  5:13   ` Rafał Miłecki
2014-08-12  5:14     ` Rafał Miłecki
2014-08-07  1:17 ` [PATCH 7/8] mtd: spi-nor: factor out write_enable() for erase commands Brian Norris
2014-08-07 14:25   ` Marek Vasut
2014-08-09 10:52   ` Huang Shijie
2014-08-11 18:48     ` Brian Norris
2014-08-12  0:59       ` Huang Shijie
2014-09-10  7:05         ` Brian Norris
2014-09-10 15:20           ` Huang Shijie
2014-09-10  7:47             ` Brian Norris
2014-09-10 16:12               ` Huang Shijie
2014-09-10 23:25                 ` Brian Norris
2014-11-05 10:29   ` [PATCH v2] " Brian Norris
2014-11-06  3:39     ` Huang Shijie
2014-12-01  8:19     ` Brian Norris
2014-08-07  1:17 ` [RFC 8/8] debug: mtd: spi-nor: add BUG_ON() prints to check for !ready Brian Norris
2014-08-07 14:26   ` Marek Vasut
2014-11-05 10:10 ` [PATCH 0/8] mtd: spi-nor: refactor wait-till-ready Brian Norris

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