diff options
| author | Christoph Hellwig <hch@lst.de> | 2018-11-09 09:51:00 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-12-06 16:04:56 +0100 |
| commit | 7c703e54cc71df5baa962e24a5663d88173bba5c (patch) | |
| tree | caf54e62471ee960c1143a58d246d2e63bd35616 /lib | |
| parent | dma-mapping: return an error code from dma_mapping_error (diff) | |
| download | linux-7c703e54cc71df5baa962e24a5663d88173bba5c.tar.xz linux-7c703e54cc71df5baa962e24a5663d88173bba5c.zip | |
arch: switch the default on ARCH_HAS_SG_CHAIN
These days architectures are mostly out of the business of dealing with
struct scatterlist at all, unless they have architecture specific iommu
drivers. Replace the ARCH_HAS_SG_CHAIN symbol with a ARCH_NO_SG_CHAIN
one only enabled for architectures with horrible legacy iommu drivers
like alpha and parisc, and conditionally for arm which wants to keep it
disable for legacy platforms.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig | 2 | ||||
| -rw-r--r-- | lib/scatterlist.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/lib/Kconfig b/lib/Kconfig index a9965f4af4dd..d5a5e2ebf286 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -577,7 +577,7 @@ config SG_POOL # sg chaining option # -config ARCH_HAS_SG_CHAIN +config ARCH_NO_SG_CHAIN def_bool n config ARCH_HAS_PMEM_API diff --git a/lib/scatterlist.c b/lib/scatterlist.c index 7c6096a71704..9ba349e775ef 100644 --- a/lib/scatterlist.c +++ b/lib/scatterlist.c @@ -271,7 +271,7 @@ int __sg_alloc_table(struct sg_table *table, unsigned int nents, if (nents == 0) return -EINVAL; -#ifndef CONFIG_ARCH_HAS_SG_CHAIN +#ifdef CONFIG_ARCH_NO_SG_CHAIN if (WARN_ON_ONCE(nents > max_ents)) return -EINVAL; #endif |