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Maciej W. Rozycki d01501f852
MIPS: Fix `dma_alloc_coherent' returning a non-coherent allocation 
Fix a MIPS `dma_alloc_coherent' regression from commit bc3ec75de5
("dma-mapping: merge direct and noncoherent ops") that causes a cached
allocation to be returned on noncoherent cache systems.

This is due to an inverted check now used in the MIPS implementation of
`arch_dma_alloc' on the result from `dma_direct_alloc_pages' before
doing the cached-to-uncached mapping of the allocation address obtained.
The mapping has to be done for a non-NULL rather than NULL result,
because a NULL result means the allocation has failed.

Invert the check for correct operation then.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Fixes: bc3ec75de5 ("dma-mapping: merge direct and noncoherent ops")
Patchwork: https://patchwork.linux-mips.org/patch/20965/
 		2018-11-05 10:08:13 -08:00
..
alchemy mtd: rawnand: Move platform_nand_xxx definitions out of rawnand.h 2018-10-03 11:12:25 +02:00
ar7 mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
ath25 mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
ath79 mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
bcm47xx MIPS: BCM47XX: Enable USB power on Netgear WNDR3400v3 2018-08-29 11:11:00 -07:00
bcm63xx mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
bmips mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
boot Here are the main MIPS updates for 4.20: 2018-10-26 14:43:48 -07:00
cavium-octeon MIPS: OCTEON: fix out of bounds array access on CN68XX 2018-11-05 10:03:35 -08:00
cobalt
…
configs MIPS: generic: Add Network, SPI and I2C to ocelot_defconfig 2018-10-15 23:11:15 -07:00
crypto MIPS: crypto: Add crc32 and crc32c hw accelerated module 2018-02-19 20:50:36 +00:00
dec mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
emma mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
fw mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
generic MIPS: mscc: add PCB120 to the ocelot fitImage 2018-10-09 10:38:29 -07:00
include treewide: remove current_text_addr 2018-10-31 08:54:12 -07:00
jazz mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
jz4740 JFFS2 changes: 2018-08-14 10:57:44 -07:00
kernel memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
kvm mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
lantiq mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
lasat mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
lib MIPS: lib: Use kernel_pref & user_pref in memcpy() 2018-10-15 23:11:14 -07:00
loongson32 MIPS: Loongson: Merge load addresses 2018-07-30 18:59:01 -07:00
loongson64 mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
math-emu MIPS: math-emu: Mark fall throughs in switch statements with a comment 2017-12-12 17:20:20 +01:00
mm MIPS: Fix `dma_alloc_coherent' returning a non-coherent allocation 2018-11-05 10:08:13 -08:00
mti-malta mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
net bpf, mips: remove unused function 2018-05-14 19:11:45 -07:00
netlogic mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
oprofile MIPS: perf: More robustly probe for the presence of per-tc counters 2018-05-15 15:16:16 +01:00
paravirt mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
pci mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
pic32 mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
pistachio License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pmcs-msp71xx MIPS: Remove no-op/identity casts 2018-08-31 11:49:20 -07:00
pnx833x mtd: rawnand: Move platform_nand_xxx definitions out of rawnand.h 2018-10-03 11:12:25 +02:00
power License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ralink mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
rb532 mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
sgi-ip22 MIPS: Remove no-op/identity casts 2018-08-31 11:49:20 -07:00
sgi-ip27 mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
sgi-ip32 MIPS: IP32: use generic dma noncoherent ops 2018-06-24 09:27:27 -07:00
sibyte mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
sni MIPS: sni: Remove the read_persistent_clock() 2018-05-14 23:58:25 +01:00
tools MIPS: Use a custom elf-entry program to find kernel entry point 2018-08-30 09:39:22 -07:00
txx9 mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
vdso kbuild: replace cc-name test with CONFIG_CC_IS_CLANG 2018-11-02 22:49:00 +09:00
vr41xx MIPS: Annotate cpu_wait implementations with __cpuidle 2018-06-28 14:18:54 -07:00
Kbuild MIPS: Disable Werror when W= is set 2017-04-10 11:56:07 +02:00
Kbuild.platforms MIPS: Xilfpga: Switch to using generic defconfigs 2017-11-08 22:54:14 +00:00
Kconfig mm: remove CONFIG_HAVE_MEMBLOCK 2018-10-31 08:54:15 -07:00
Kconfig.debug Kconfig: consolidate the "Kernel hacking" menu 2018-08-02 08:06:48 +09:00
Makefile kbuild: replace cc-name test with CONFIG_CC_IS_CLANG 2018-11-02 22:49:00 +09:00
Makefile.postlink License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00