From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Date: Thu, 14 Jul 2005 07:33:34 +0000 (-0700)
Subject: [PATCH] uml: fix lvalue for gcc4
X-Git-Tag: v2.6.13-rc4~113
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bcb01b8a67476e6f748086e626df8424cc27036d;p=pandora-kernel.git

[PATCH] uml: fix lvalue for gcc4

      Russell King <rmk+lkml@arm.linux.org.uk>

This construct is refused by GCC 4, so here's the (corrected) fix.  Thanks to
Russell for noticing a stupid mistake I did when first sending this.

As he noted, the code is largely suboptimal however it currently works, and
will be fixed shortly.  Just read the access_ok check on fp which is NULL, or
the pointer arithmetic below which should be done with a cast to void*:

 	frame = (struct rt_sigframe __user *)
 		round_down(stack_top - sizeof(struct rt_sigframe), 16) - 8;

The code shows clearly that has been taken from
arch/x86_64/kernel/signal.c:setup_rt_frame(), maybe in a bit of a hurry.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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