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| author | Nicolas Schichan <nschichan@freebox.fr> | 2015-05-28 10:40:12 +0200 |
|---|---|---|
| committer | Gregory CLEMENT <gregory.clement@free-electrons.com> | 2015-05-28 11:14:19 +0200 |
| commit | 8c9e06e64768665503e778088a39ecff3a6f2e0c (patch) | |
| tree | 13b3c7667ec22cda21b276891222caf6bafb80b8 /fs/ext4/balloc.c | |
| parent | 2ff9ab4c7b6d17c82a01e3449173465cf742e897 (diff) | |
| download | blackbird-obmc-linux-8c9e06e64768665503e778088a39ecff3a6f2e0c.tar.gz blackbird-obmc-linux-8c9e06e64768665503e778088a39ecff3a6f2e0c.zip | |
bus: mvebu-mbus: do not set WIN_CTRL_SYNCBARRIER on non io-coherent platforms.
Commit a0b5cd4ac2d6 ("bus: mvebu-mbus: use automatic I/O
synchronization barriers") enabled the usage of automatic I/O
synchronization barriers by enabling bit WIN_CTRL_SYNCBARRIER in the
control registers of MBus windows, but on non io-coherent platforms
(orion5x, kirkwood and dove) the WIN_CTRL_SYNCBARRIER bit in
the window control register is either reserved (all windows except 6
and 7) or enables read-only protection (windows 6 and 7).
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: <stable@vger.kernel.org> # v4.0+
Fixes: a0b5cd4ac2d6 ("bus: mvebu-mbus: use automatic I/O synchronization barriers")
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Diffstat (limited to 'fs/ext4/balloc.c')
0 files changed, 0 insertions, 0 deletions
