linux-kernel - Re: [PATCH v2 1/4] spi: spidev: Restore all SPI mode flags on ioctl failure

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Message-ID: <20140227045032.GN9383@sirena.org.uk>
Date:	Thu, 27 Feb 2014 13:50:32 +0900
From:	Mark Brown <broonie@...nel.org>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert+renesas@...ux-m68k.org>
Subject: Re: [PATCH v2 1/4] spi: spidev: Restore all SPI mode flags on ioctl
 failure

On Tue, Feb 25, 2014 at 11:40:16AM +0100, Geert Uytterhoeven wrote:
> From: Geert Uytterhoeven <geert+renesas@...ux-m68k.org>
> 
> In commit f477b7fb13df2b843997559ff34e87d054ba6538 ("spi: DUAL and QUAD
> support"), spi_device.mode was enlarged from 8 to 16 bits.

Applied, thanks.

> For SPI_IOC_WR_MODE this is probably not so important, as it doesn't allow
> setting Quad or Dual mode anyway, but SPI_IOC_WR_LSB_FIRST is used to just
> set or clear a single bit.

Since there's no API for it at present I'd not expect somethng that is
using spidev to be able to have enabled any of the high mode bits.
Unless I'm missing some path for this?

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