[3.11.y.z extended stable] Patch "bus: mvebu-mbus: allow several windows with the same target/attribute" has been added to staging queue

Luis Henriques luis.henriques at canonical.com
Fri May 30 09:28:21 UTC 2014

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

    bus: mvebu-mbus: allow several windows with the same target/attribute

to the linux-3.11.y-queue branch of the 3.11.y.z extended stable tree 
which can be found at:


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

For more information about the 3.11.y.z tree, see



>From e90177227dba3a11a6fb14045a627173dd982488 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Date: Fri, 18 Apr 2014 14:19:52 +0200
Subject: bus: mvebu-mbus: allow several windows with the same target/attribute

commit b566e782be32145664d96ada3e389f17d32742e5 upstream.

Having multiple windows with the same target and attribute is actually
legal, and can be useful for PCIe windows, when PCIe BARs have a size
that isn't a power of two, and we therefore need to create several
MBus windows to cover the PCIe BAR for a given PCIe interface.

Fixes: fddddb52a6c4 ('bus: introduce an Marvell EBU MBus driver')
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Link: https://lkml.kernel.org/r/1397823593-1932-7-git-send-email-thomas.petazzoni@free-electrons.com
Tested-by: Neil Greatorex <neil at fatboyfat.co.uk>
Signed-off-by: Jason Cooper <jason at lakedaemon.net>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
 drivers/bus/mvebu-mbus.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index 33c6947eebec..2c14db25e553 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -252,12 +252,6 @@ static int mvebu_mbus_window_conflicts(struct mvebu_mbus_state *mbus,
 		if ((u64)base < wend && end > wbase)
 			return 0;
-		/*
-		 * Check if target/attribute conflicts
-		 */
-		if (target == wtarget && attr == wattr)
-			return 0;

 	return 1;

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