[PATCH xserver] ad hoc fix for mmap's truncated offset parameter on 32bit

[Mark Kettenis]

> From: Stefan Dirsch <sndirsch at suse.de>
> Date: Thu, 28 Apr 2016 14:35:00 +0200
> 
> Builtin modesetting driver didn't work on 32bit on cirrus KMS. See
> https://bugzilla.suse.com/show_bug.cgi?id=917385 for more details.

I think selectively compiling with -D_FILE_OFFSET_BITS=64 is a
seriously bad idea.  Either evrything should be compiled with that
switch, or nothing.  And adding a #define like that after including
some other header files is even worse.

> Signed-off-by: Stefan Dirsch <sndirsch at suse.de>
> ---
>  hw/xfree86/drivers/modesetting/dumb_bo.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/hw/xfree86/drivers/modesetting/dumb_bo.c b/hw/xfree86/drivers/modesetting/dumb_bo.c
> index cf13f0a..42abe8b 100644
> --- a/hw/xfree86/drivers/modesetting/dumb_bo.c
> +++ b/hw/xfree86/drivers/modesetting/dumb_bo.c
> @@ -29,6 +29,12 @@
>  #include "dix-config.h"
>  #endif
>  
> +/*
> + * ad hoc fix for mmap's truncated offset parameter on 32bit
> + * see also https://bugzilla.suse.com/show_bug.cgi?id=917385
> + */
> +#define _FILE_OFFSET_BITS 64
> +
>  #include "dumb_bo.h"
>  
>  #include <errno.h>
> -- 
> 2.6.2
> 
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