diff options
| author | Laurent Pinchart <[email protected]> | 2015-01-27 19:04:10 +0200 |
|---|---|---|
| committer | Vinod Koul <[email protected]> | 2015-02-16 09:33:35 +0530 |
| commit | be6893e1958035cbeff281b833777c5cd3fb36ad (patch) | |
| tree | 093195bbad635531be5814a8d3403aef0d557865 /tools/perf/util/trace-event-scripting.c | |
| parent | 3f46306127bb7d8a69078ff9ef8a5827677c2159 (diff) | |
dmaengine: rcar-dmac: Disable channel 0 when using IOMMU
A still unconfirmed hardware bug prevents the IPMMU microTLB 0 to be
flushed correctly, resulting in memory corruption. DMAC 0 channel 0 is
connected to microTLB 0 on currently supported platforms, so we can't
use it with the IPMMU. As the IOMMU API operates at the device level we
can't disable it selectively, so ignore channel 0 for now if the device
is part of an IOMMU group.
Signed-off-by: Laurent Pinchart <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
Signed-off-by: Vinod Koul <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions