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ieee1394: revert "sbp2: enforce 32bit DMA mapping"

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Revert commit 0555659d63 from 2.6.22-rc1.
The dma_set_mask call somehow failed on a PowerMac G5, PPC64:
http://lkml.org/lkml/2007/8/1/344

Should there ever occur a DMA mapping beyond the physical DMA range, a
proper SBP-2 firmware will report transport errors.  So let's leave it
at that.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Tested-by: Olaf Hering <olh@suse.de>
This commit is contained in:
Stefan Richter 2007-08-01 20:30:36 +02:00
parent 1ed4395035
commit a9c2f18800
1 changed files with 0 additions and 5 deletions
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5
drivers/ieee1394/sbp2.c
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@ -773,11 +773,6 @@ static struct sbp2_lu *sbp2_alloc_device(struct unit_directory *ud)
SBP2_ERR("failed to register lower 4GB address range");
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
}