linux-kernel - Re: [PATCH 1/2] mtd: m25p80: Fix false-positive probing

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Date:	Thu, 08 Jul 2010 08:57:24 +0300
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Anton Vorontsov <avorontsov@...sta.com>
Cc:	David Woodhouse <dwmw2@...radead.org>,
	Barry Song <21cnbao@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mike Frysinger <vapier.adi@...il.com>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	linux-mtd@...ts.infradead.org,
	uclinux-dist-devel@...ckfin.uclinux.org
Subject: Re: [PATCH 1/2] mtd: m25p80: Fix false-positive probing

On Tue, 2010-06-22 at 20:57 +0400, Anton Vorontsov wrote:
> Since commit 18c6182bae0acca220ed6611f741034d563cd19f ("Rework
> probing/JEDEC code"), m25p80 driver successfully registers chips
> even if JEDEC probing fails.
> 
> This was needed to support non-JEDEC flashes. Though, it appears
> that some platforms (e.g. blackfin bf533 stamp[1]) used the old
> behavior to detect if there's any flash connected, so the driver
> have to fail on JEDEC probing errors.
> 
> This patch restores the old behavior for JEDEC flashes, and adds
> "-nonjedec" SPI device IDs for M25Pxx flashes, so that the kernel
> still supports non-JEDEC flashes.
> 
> [1] http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=5975
> 
> Reported-by: Mingquan Pan
> Reported-by: Barry Song <21cnbao@...il.com>
> Signed-off-by: Anton Vorontsov <avorontsov@...sta.com>
> ---

Pushed both patches to my l2-mtd-2.6.git / dunno, added Mike's ack.

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)

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