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| author | Logan Gunthorpe <logang@deltatee.com> | 2017-06-05 20:00:52 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-30 08:21:54 (GMT) |
| commit | 4743d1b37a38c36ce2b01741edd33bbaaea9a1b4 (patch) | |
| tree | 18018cd7e22fe7c00d1c913bb69f92a1e752a84f /Documentation/devicetree | |
| parent | b8fce38266dbf3fdc1e100a0c2ffd555b336f03d (diff) | |
| download | linux-4743d1b37a38c36ce2b01741edd33bbaaea9a1b4.tar.xz | |
ntb_transport: fix qp count bug
commit cb827ee6ccc3e480f0d9c0e8e53eef55be5b0414 upstream.
In cases where there are more mw's than spads/2-2, the mw count gets
reduced to match the limitation. ntb_transport also tries to ensure that
there are fewer qps than mws but uses the full mw count instead of
the reduced one. When this happens, the math in
'ntb_transport_setup_qp_mw' will get confused and result in a kernel
paging request bug.
This patch fixes the bug by reducing qp_count to the reduced mw count
instead of the full mw count.
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Fixes: e26a5843f7f5 ("NTB: Split ntb_hw_intel and ntb_transport drivers")
Acked-by: Allen Hubbe <Allen.Hubbe@dell.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/devicetree')
0 files changed, 0 insertions, 0 deletions