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OpenCloudOS-Kernel/arch/mips/mm
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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
..
Makefile MIPS: remove mips_swiotlb_ops 2018-07-27 15:19:59 -07:00
c-octeon.c MIPS: c-r4k: Split user/kernel flush_icache_range() 2016-10-04 16:13:57 +02:00
c-r3k.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
c-r4k.c MIPS: don't select DMA_MAYBE_COHERENT from DMA_PERDEV_COHERENT 2018-09-20 09:01:14 +02:00
c-tx39.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cache.c MIPS: simplify CONFIG_DMA_NONCOHERENT ifdefs 2018-06-24 09:26:02 -07:00
cerr-sb1.c MIPS: Sibyte: Fix build for SIBYTE_BW_TRACE on BCM1x55 and BCM1x80. 2013-06-21 18:07:02 +02:00
cex-gen.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cex-oct.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cex-sb1.S mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
dma-noncoherent.c MIPS: Fix `dma_alloc_coherent' returning a non-coherent allocation 2018-11-05 10:08:13 -08:00
extable.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
fault.c mm: convert return type of handle_mm_fault() caller to vm_fault_t 2018-08-17 16:20:28 -07:00
gup.c mm/gup.c: document return value 2018-04-13 17:10:27 -07:00
highmem.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hugetlbpage.c mm/hugetlb: add size parameter to huge_pte_offset() 2017-07-06 16:24:34 -07:00
init.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
ioremap.c MIPS: Fix ioremap() RAM check 2018-07-05 14:43:21 -07:00
mmap.c exec: pass stack rlimit into mm layout functions 2018-04-11 10:28:37 -07:00
page-funcs.S MIPS: Export {copy, clear}_page functions alongside their definitions 2017-01-03 16:48:39 +01:00
page.c arch: mips: mm: page: Remove unused function 2018-06-24 09:27:27 -07:00
pgtable-32.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
pgtable-64.c MIPS: Add 48-bit VA space (and 4-level page tables) for 4K pages. 2017-04-10 11:56:06 +02:00
pgtable.c MIPS: Move pgd_alloc() out of header 2017-02-02 15:06:26 +00:00
sc-debugfs.c MIPS: Re-use kstrtobool_from_user() 2018-05-14 23:58:23 +01:00
sc-ip22.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sc-mips.c MIPS: JZ4770: Work around config2 misreporting associativity 2018-01-18 22:07:44 +00:00
sc-r5k.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sc-rm7k.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tlb-funcs.S MIPS: Consistently declare TLB functions 2018-08-10 17:27:53 -07:00
tlb-r3k.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tlb-r4k.c MIPS: Mask out limit field when calculating wired entry count 2016-11-24 16:44:16 +01:00
tlb-r8k.c MIPS: Retrieve ASID masks using function accepting struct cpuinfo_mips 2016-05-13 14:02:20 +02:00
tlbex-fault.S MIPS: Add DWARF unwinding to assembly 2017-09-06 11:01:52 +02:00
tlbex.c MIPS: Consistently declare TLB functions 2018-08-10 17:27:53 -07:00
uasm-micromips.c MIPS: Remove remnants of UASM_ISA 2018-08-09 14:45:00 -07:00
uasm-mips.c MIPS: Remove remnants of UASM_ISA 2018-08-09 14:45:00 -07:00
uasm.c MIPS: Add some instructions to uasm. 2017-06-28 12:22:39 +02:00