lkml.org 
[lkml]   [2016]   [Jul]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 2/4] x86/platform/UV: Fix problem with bad UV4 EFI System Table causing panic
Fix a problem that occurs if for some reason the UV4 EFI System Table
is not available, the check inadvertantly can cause a panic.

Reviewed-by: Dimitri Sivanich <sivanich@sgi.com>
Reviewed-by: Nathan Zimmer <nzimmer@sgi.com>
Tested-by: Frank Ramsay <framsay@sgi.com>
Tested-by: John Estabrook <estabrook@sgi.com>
Signed-off-by: Mike Travis <travis@sgi.com>
---
arch/x86/platform/uv/bios_uv.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

--- linux-3.12.orig/arch/x86/platform/uv/bios_uv.c
+++ linux-3.12/arch/x86/platform/uv/bios_uv.c
@@ -201,11 +201,12 @@ void uv_bios_init(void)
}

if (uv_systab->revision >= UV_SYSTAB_VERSION_UV4) {
+ int size = uv_systab->size;
+
iounmap(uv_systab);
- uv_systab = ioremap(efi.uv_systab, uv_systab->size);
+ uv_systab = ioremap(efi.uv_systab, size);
if (!uv_systab) {
- pr_err("UV: UVsystab: ioremap(%d) failed!\n",
- uv_systab->size);
+ pr_err("UV: UVsystab: ioremap(%d) failed!\n", size);
return;
}
}
--

\
 
 \ /
  Last update: 2016-07-27 20:21    [W:0.095 / U:0.256 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site