[3.16.y-ckt stable] Patch "Revert "firmware: dmi_scan: Fix UUID endianness for SMBIOS >= 2.6"" has been added to the 3.16.y-ckt tree

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    Revert "firmware: dmi_scan: Fix UUID endianness for SMBIOS >= 2.6"

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt26.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

---8<------------------------------------------------------------

>From 6b90ca7b36fc7903de7b8cc371f87bb993c6b8c4 Mon Sep 17 00:00:00 2001
From: Luis Henriques <luis.henriques at canonical.com>
Date: Thu, 3 Mar 2016 11:45:37 +0000
Subject: Revert "firmware: dmi_scan: Fix UUID endianness for SMBIOS >= 2.6"

This reverts commit 0f7b4f7914e450b1bcffdbd26bbf35ee304cbfea, which was
commit ff4319dc7cd58c92b389960e375038335d157a60 upstream.

This commit introduced a regression in this kernel.  Commit 95be58df74a5
("firmware: dmi_scan: Use full dmi version for SMBIOS3") added support for
SMBIOS3.  However, this was not backport to this kernel version, and thus
commit ff4319dc7cd5 should have not been applied.

BugLink: https://bugs.launchpad.net/bugs/1551419
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/firmware/dmi_scan.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 48142b88e672..35286fe52823 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -493,7 +493,6 @@ static int __init dmi_present(const u8 *buf)
 			dmi_ver = smbios_ver;
 		else
 			dmi_ver = (buf[14] & 0xF0) << 4 | (buf[14] & 0x0F);
-		dmi_ver <<= 8;
 		dmi_num = (buf[13] << 8) | buf[12];
 		dmi_len = (buf[7] << 8) | buf[6];
 		dmi_base = (buf[11] << 24) | (buf[10] << 16) |
@@ -502,10 +501,10 @@ static int __init dmi_present(const u8 *buf)
 		if (dmi_walk_early(dmi_decode) == 0) {
 			if (smbios_ver) {
 				pr_info("SMBIOS %d.%d present.\n",
-					dmi_ver >> 16, (dmi_ver >> 8) & 0xFF);
+				       dmi_ver >> 8, dmi_ver & 0xFF);
 			} else {
 				pr_info("Legacy DMI %d.%d present.\n",
-					dmi_ver >> 16, (dmi_ver >> 8) & 0xFF);
+				       dmi_ver >> 8, dmi_ver & 0xFF);
 			}
 			dmi_format_ids(dmi_ids_string, sizeof(dmi_ids_string));
 			printk(KERN_DEBUG "DMI: %s\n", dmi_ids_string);