[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>

1 files changed, 4 insertions, 3 deletions

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)