This is a note to let you know that I've just added the patch titled
x86/iosf: Add Kconfig prompt for IOSF_MBI selection
to the 3.14-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:
x86-iosf-add-kconfig-prompt-for-iosf_mbi-selection.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From aa8e4f22ab7773352ba3895597189b8097f2c307 Mon Sep 17 00:00:00 2001
From: "David E. Box" <david.e.box@xxxxxxxxxxxxxxx>
Date: Wed, 27 Aug 2014 14:40:39 -0700
Subject: x86/iosf: Add Kconfig prompt for IOSF_MBI selection
From: "David E. Box" <david.e.box@xxxxxxxxxxxxxxx>
commit aa8e4f22ab7773352ba3895597189b8097f2c307 upstream.
Fixes an error in having the iosf build as 'default m'. On X86 SoC's the iosf
sideband is the only way to access information for some registers, as opposed to
through MSR's on other Intel architectures. While selecting IOSF_MBI is
preferred, it does mean carrying extra code on non-SoC architectures. This
exports the selection to the user, allowing those driver writers to compile out
iosf code if it's not being built.
Signed-off-by: David E. Box <david.e.box@xxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1409175640-32426-2-git-send-email-david.e.box@xxxxxxxxxxxxxxx
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
Cc: William Dauchy <william@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/Kconfig | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2440,9 +2440,19 @@ config X86_DMA_REMAP
depends on STA2X11
config IOSF_MBI
- tristate
- default m
+ tristate "Intel System On Chip IOSF Sideband support"
depends on PCI
+ ---help---
+ Enables sideband access to mailbox registers on SoC's. The sideband is
+ available on the following platforms. This list is not meant to be
+ exclusive.
+ - BayTrail
+ - Cherryview
+ - Braswell
+ - Quark
+
+ You should say Y if you are running a kernel on one of these
+ platforms.
source "net/Kconfig"
Patches currently in stable-queue which might be from david.e.box@xxxxxxxxxxxxxxx are
queue-3.14/x86-iosf-add-kconfig-prompt-for-iosf_mbi-selection.patch
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