powerpc: Move Power Macintosh drivers to generic byteswappers
ppc has special instruction forms to efficiently load and store values
in non-native endianness. These can be accessed via the arch-specific
{ld,st}_le{16,32}() inlines in arch/powerpc/include/asm/swab.h.
However, gcc is perfectly capable of generating the byte-reversing
load/store instructions when using the normal, generic cpu_to_le*() and
le*_to_cpu() functions eaning the arch-specific functions don't have much
point.
Worse the "le" in the names of the arch specific functions is now
misleading, because they always generate byte-reversing forms, but some
ppc machines can now run a little-endian kernel.
To start getting rid of the arch-specific forms, this patch removes them
from all the old Power Macintosh drivers, replacing them with the
generic byteswappers.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/drivers/scsi/mac53c94.c b/drivers/scsi/mac53c94.c
index e5cd8d8..0adb2e0 100644
--- a/drivers/scsi/mac53c94.c
+++ b/drivers/scsi/mac53c94.c
@@ -382,16 +382,16 @@
if (dma_len > 0xffff)
panic("mac53c94: scatterlist element >= 64k");
total += dma_len;
- st_le16(&dcmds->req_count, dma_len);
- st_le16(&dcmds->command, dma_cmd);
- st_le32(&dcmds->phy_addr, dma_addr);
+ dcmds->req_count = cpu_to_le16(dma_len);
+ dcmds->command = cpu_to_le16(dma_cmd);
+ dcmds->phy_addr = cpu_to_le32(dma_addr);
dcmds->xfer_status = 0;
++dcmds;
}
dma_cmd += OUTPUT_LAST - OUTPUT_MORE;
- st_le16(&dcmds[-1].command, dma_cmd);
- st_le16(&dcmds->command, DBDMA_STOP);
+ dcmds[-1].command = cpu_to_le16(dma_cmd);
+ dcmds->command = cpu_to_le16(DBDMA_STOP);
cmd->SCp.this_residual = total;
}