linux-kernel - Re: amba_pl022 spi->mode fix/cleanup patches

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Date:	Mon, 13 Sep 2010 17:19:31 +0200
From:	Linus Walleij <linus.ml.walleij@...il.com>
To:	wellsk40@...il.com
Cc:	spi-devel-general@...ts.sourceforge.net,
	rabin.vincent@...ricsson.com, linux@....linux.org.uk,
	sameo@...ux.intel.com, srinidhi.kasagar@...ricsson.com,
	Lukasz.Baj@...to.com, linux-kernel@...r.kernel.org,
	u.kleine-koenig@...gutronix.de, tj@...nel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: amba_pl022 spi->mode fix/cleanup patches

2010/9/10  <wellsk40@...il.com>:

> This patch series updates drivers and platforms that depend on the
> amba_pl022 driver and use the pl022_config_chip structure for
> setting up the SPI mode and data transfer width.

I get regressions from the ab8500-spi.c driver from this patch:

> ssp-pl022 ssp0: ARM PL022 driver, device ID: 0x01080022
> pl022: mapped registers from 0x80002000 to d0834000
> ab8500-spi spi0.0: unknown chip, revision: 0x80
> ab8500-spi: probe of spi0.0 failed with error -22

The 0x80 above used to be 0x00 before these patches.
So all of a sudden bit 7 gets set...

I don't know why this happens, probably some flag that used to
be set had not been properly propagated in the first patch to alter
the AB8500 device registration?

Yours,
Linus Walleij
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