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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: fddddb52a6 ('bus: introduce an Marvell EBU MBus driver')
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@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@fatboyfat.co.uk>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thomas Petazzoni 2014-04-18 14:19:52 +02:00 committed by Greg Kroah-Hartman
parent f56fb0d42b
commit 19d6516674
1 changed files with 0 additions and 6 deletions
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6
drivers/bus/mvebu-mbus.c
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@ -250,12 +250,6 @@ 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;