This is a note to let you know that I've just added the patch titled
drivers/firmware/dmi_scan.c: check dmi version when get
to the 3.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drivers-firmware-dmi_scan.c-check-dmi-version-when-get.patch
and it can be found in the queue-3.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From f1d8e614d74b09531b9a85e812485340f3df7b1c Mon Sep 17 00:00:00 2001
From: Zhenzhong Duan <[email protected]>
Date: Thu, 20 Dec 2012 15:05:13 -0800
Subject: drivers/firmware/dmi_scan.c: check dmi version when get
system uuid
From: Zhenzhong Duan <[email protected]>
commit f1d8e614d74b09531b9a85e812485340f3df7b1c upstream.
As of version 2.6 of the SMBIOS specification, the first 3 fields of the
UUID are supposed to be little-endian encoded.
Also a minor fix to match variable meaning and mute checkpatch.pl
[[email protected]: tweak code comment]
Signed-off-by: Zhenzhong Duan <[email protected]>
Cc: Feng Jin <[email protected]>
Cc: Jean Delvare <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Abdallah Chatila <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/firmware/dmi_scan.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -16,6 +16,7 @@
*/
static char dmi_empty_string[] = " ";
+static u16 __initdata dmi_ver;
/*
* Catch too early calls to dmi_check_system():
*/
@@ -161,8 +162,10 @@ static void __init dmi_save_uuid(const s
return;
for (i = 0; i < 16 && (is_ff || is_00); i++) {
- if(d[i] != 0x00) is_ff = 0;
- if(d[i] != 0xFF) is_00 = 0;
+ if (d[i] != 0x00)
+ is_00 = 0;
+ if (d[i] != 0xFF)
+ is_ff = 0;
}
if (is_ff || is_00)
@@ -172,7 +175,15 @@ static void __init dmi_save_uuid(const s
if (!s)
return;
- sprintf(s, "%pUB", d);
+ /*
+ * As of version 2.6 of the SMBIOS specification, the first 3 fields of
+ * the UUID are supposed to be little-endian encoded. The specification
+ * says that this is the defacto standard.
+ */
+ if (dmi_ver >= 0x0206)
+ sprintf(s, "%pUL", d);
+ else
+ sprintf(s, "%pUB", d);
dmi_ident[slot] = s;
}
@@ -414,6 +425,7 @@ static int __init dmi_present(const char
* DMI version 0.0 means that the real version is taken from
* the SMBIOS version, which we don't know at this point.
*/
+ dmi_ver = (buf[14] & 0xf0) << 4 | (buf[14] & 0x0f);
if (buf[14] != 0)
printk(KERN_INFO "DMI %d.%d present.\n",
buf[14] >> 4, buf[14] & 0xF);
Patches currently in stable-queue which might be from [email protected]
are
queue-3.7/drivers-firmware-dmi_scan.c-fetch-dmi-version-from-smbios-if-it-exists.patch
queue-3.7/drivers-firmware-dmi_scan.c-check-dmi-version-when-get.patch
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