linux/arch/mips
Jayachandran C 55c25c2f14 MIPS: mm: Move some checks out of 'for' loop in DMA operations
The check cpu_needs_post_dma_flush() in mips_dma_sync_sg_for_cpu() and
the check !plat_device_is_coherent() in mips_dma_sync_sg_for_device()
can be moved outside the for loop.

As a side effect, this also avoids a GCC bug that caused kernel compile
to fail with the error:

arch/mips/mm/dma-default.c: In function 'mips_dma_sync_sg_for_cpu':
arch/mips/mm/dma-default.c:316:1: internal compiler error: in add_insn_before, at emit-rtl.c:3852

This gcc failure is seen in Code Sourcery toolchains [e.g. gcc version
4.7.2 (Sourcery CodeBench Lite 2012.09-99)] after commit "MIPS: Optimize
current_cpu_type() for better code."

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5907/
Reviewed-by: Markos Chandras <markos.chandras@imgtec.com>
Tested-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-09-25 17:05:44 +02:00
..
alchemy
ar7
ath79
bcm47xx
bcm63xx
boot
cavium-octeon
cobalt
configs
dec
emma
fw
include
jazz
jz4740
kernel
kvm
lantiq
lasat
lib
loongson
loongson1
math-emu
mm
mti-malta
mti-sead3
netlogic
oprofile
pci
pmcs-msp71xx
pnx833x
power
powertv
ralink
rb532
sgi-ip22
sgi-ip27
sgi-ip32
sibyte
sni
txx9
vr41xx
Kbuild
Kbuild.platforms
Kconfig
Kconfig.debug
Makefile