linux-kernel - Re: [PATCH] staging: android: ashmem: Add support for 32bit ashmem calls in a 64bit kernel

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Message-ID: <20130305083707.GA7513@kroah.com>
Date:	Tue, 5 Mar 2013 16:37:07 +0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Serban Constantinescu <serban.constantinescu@....com>
Cc:	linux-kernel@...r.kernel.org, kernel-team@...roid.com,
	arve@...roid.com, john.stultz@...aro.org, Dave.Butcher@....com
Subject: Re: [PATCH] staging: android: ashmem: Add support for 32bit ashmem
 calls in a 64bit kernel

On Mon, Feb 25, 2013 at 06:44:36PM +0000, Serban Constantinescu wrote:
> Android's shared memory subsystem, Ashmem, does not support calls from a
> 32bit userspace in a 64 bit kernel. This patch adds support for syscalls
> coming from a 32bit userspace in a 64bit kernel.
> 
> The patch has been successfully tested on ARMv8 AEM(64bit
> platform model) and Versatile Express A9(32bit platform).
> 
> Signed-off-by: Serban Constantinescu <serban.constantinescu@....com>
> Acked-by: Arve Hjønnevåg <arve@...roid.com>
> Acked-by: John Stultz <john.stultz@...aro.org>

This patch breaks the build on my machine:
drivers/staging/android/ashmem.c: In function ‘compat_ashmem_ioctl’:
drivers/staging/android/ashmem.c:711:7: error: ‘compat_size_t’ undeclared (first use in this function)
drivers/staging/android/ashmem.c:711:7: note: each undeclared identifier is reported only once for each function it appears in

so of course, I can't take it :(

greg k-h
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