Commit 0555659d authored by Stefan Richter's avatar Stefan Richter

ieee1394: sbp2: enforce 32bit DMA mapping

In order to use OHCI-1394 physical DMA, all s/g elements, s/g tables,
ORBs, and response buffers have to reside within the first 4 GB of the
FireWire controller's physical address space.  Set the correct mask for
DMA mappings.
Signed-off-by: default avatarStefan Richter <stefanr@s5r6.in-berlin.de>
parent f412bf44
...@@ -757,6 +757,11 @@ static struct sbp2_lu *sbp2_alloc_device(struct unit_directory *ud) ...@@ -757,6 +757,11 @@ static struct sbp2_lu *sbp2_alloc_device(struct unit_directory *ud)
SBP2_ERR("failed to register lower 4GB address range"); SBP2_ERR("failed to register lower 4GB address range");
goto failed_alloc; goto failed_alloc;
} }
#else
if (dma_set_mask(hi->host->device.parent, DMA_32BIT_MASK)) {
SBP2_ERR("failed to set 4GB DMA mask");
goto failed_alloc;
}
#endif #endif
} }
......
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