powerpc: Move Power Macintosh drivers to generic byteswappers
authorDavid Gibson <david@gibson.dropbear.id.au>
Tue, 3 Feb 2015 05:36:21 +0000 (16:36 +1100)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Mon, 23 Mar 2015 03:29:40 +0000 (14:29 +1100)
commitf5718726714cd6114876c4e3ca9b6992ab81176c
treec8cfe34ac28b22e89e8f5aac01c615ac61fbb221
parent9eccca0843205f87c00404b663188b88eb248051
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>
13 files changed:
arch/powerpc/include/asm/dbdma.h
arch/powerpc/include/asm/vga.h
drivers/ata/pata_macio.c
drivers/block/swim3.c
drivers/ide/pmac.c
drivers/macintosh/rack-meter.c
drivers/net/ethernet/apple/bmac.c
drivers/net/ethernet/apple/mace.c
drivers/scsi/mac53c94.c
drivers/scsi/mesh.c
drivers/video/fbdev/controlfb.c
drivers/video/fbdev/platinumfb.c
sound/ppc/pmac.c