linux-kernel - Re: [PATCH] spi: spidev: Add 32 bit compat ioctl()

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Date:	Wed, 2 Feb 2011 12:15:28 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Bernhard Walle <walle@...science.de>
Cc:	dbrownell@...rs.sourceforge.net, grant.likely@...retlab.ca,
	spi-devel-general@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: [PATCH] spi: spidev: Add 32 bit compat ioctl()

On Wednesday 02 February 2011, Bernhard Walle wrote:
> Add the compat_ioctl for operations on /dev/spi* so that 32 bit
> userspace applications can access SPI. As far as I can see all data
> structure are already prepared for that, so no additional conversion has
> to be done.
> 
> My use case is MIPS with N32 userspace ABI and toolchain, and that was
> also the platform where I tested it successfully (Cavium Octeon).
> 
> Signed-off-by: Bernhard Walle <walle@...science.de>

I think you now need to #include <linux/compat.h> as well, to get the
definition of compat_ptr(). Otherwise looks good.

	Arnd
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