From: Andree Leidenfrost <aleidenf@bigpond.net.au>
Date: Sun, 1 May 2005 15:58:53 +0000 (-0700)
Subject: [PATCH] uml: fix handling of no fpx_regs
X-Git-Tag: MMI-PSA29.97-13-9~56718^2~187
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6aec3072833283a5e2ecf07318bd383a67321657;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

[PATCH] uml: fix handling of no fpx_regs

      Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>

Fix the error path, which is triggered when the processor misses the fpx
regs (i.e.  the "fxsr" cpuinfo feature).  For instance by VIA C3 Samuel2.

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

diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c
index 148645b14480..9a0ad094d926 100644
--- a/arch/um/os-Linux/sys-i386/registers.c
+++ b/arch/um/os-Linux/sys-i386/registers.c
@@ -105,14 +105,15 @@ void init_registers(int pid)
 		panic("check_ptrace : PTRACE_GETREGS failed, errno = %d",
 		      err);
 
+	errno = 0;
 	err = ptrace(PTRACE_GETFPXREGS, pid, 0, exec_fpx_regs);
 	if(!err)
 		return;
+	if(errno != EIO)
+		panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d",
+		      errno);
 
 	have_fpx_regs = 0;
-	if(err != EIO)
-		panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d",
-		      err);
 
 	err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs);
 	if(err)