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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2016-12-16 14:28:41 +0100 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2016-12-19 09:05:20 -0500 |
| commit | ae7871be189cb41184f1e05742b4a99e2c59774d (patch) | |
| tree | 153af0699fabd19f238d80917ff1b18cac6bcc87 /lib | |
| parent | 6c206e4d99f2ed2a5a59875858e3beecc69b6474 (diff) | |
| download | lwn-ae7871be189cb41184f1e05742b4a99e2c59774d.tar.gz lwn-ae7871be189cb41184f1e05742b4a99e2c59774d.zip | |
swiotlb: Convert swiotlb_force from int to enum
Convert the flag swiotlb_force from an int to an enum, to prepare for
the advent of more possible values.
Suggested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/swiotlb.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index cb1b54ee8527..a32dce6d5101 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -53,7 +53,7 @@ */ #define IO_TLB_MIN_SLABS ((1<<20) >> IO_TLB_SHIFT) -int swiotlb_force; +enum swiotlb_force swiotlb_force; /* * Used to do a quick range check in swiotlb_tbl_unmap_single and @@ -107,7 +107,7 @@ setup_io_tlb_npages(char *str) if (*str == ',') ++str; if (!strcmp(str, "force")) - swiotlb_force = 1; + swiotlb_force = SWIOTLB_FORCE; return 0; } @@ -763,7 +763,7 @@ dma_addr_t swiotlb_map_page(struct device *dev, struct page *page, * we can safely return the device addr and not worry about bounce * buffering it. */ - if (dma_capable(dev, dev_addr, size) && !swiotlb_force) + if (dma_capable(dev, dev_addr, size) && swiotlb_force != SWIOTLB_FORCE) return dev_addr; trace_swiotlb_bounced(dev, dev_addr, size, swiotlb_force); @@ -904,7 +904,7 @@ swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems, phys_addr_t paddr = sg_phys(sg); dma_addr_t dev_addr = phys_to_dma(hwdev, paddr); - if (swiotlb_force || + if (swiotlb_force == SWIOTLB_FORCE || !dma_capable(hwdev, dev_addr, sg->length)) { phys_addr_t map = map_single(hwdev, sg_phys(sg), sg->length, dir, attrs); |