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| author | Petr Tesarik <petr.tesarik.ext@huawei.com> | 2023-08-01 08:23:56 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2023-08-01 18:02:02 +0200 |
| commit | 0c6874a6ac0474b54c8d1ba33e243ec578ff815a (patch) | |
| tree | d3de8f2e381871d8b58bf7b56ac0bdb24b23cff3 /arch | |
| parent | 3fa6456ebe13adab3ba1817c8e515a5b88f95dce (diff) | |
| download | linux-0c6874a6ac0474b54c8d1ba33e243ec578ff815a.tar.gz linux-0c6874a6ac0474b54c8d1ba33e243ec578ff815a.tar.bz2 linux-0c6874a6ac0474b54c8d1ba33e243ec578ff815a.zip | |
swiotlb: bail out of swiotlb_init_late() if swiotlb is already allocated
If swiotlb is allocated, immediately return 0, so callers do not have to
check io_tlb_default_mem.nslabs explicitly.
Signed-off-by: Petr Tesarik <petr.tesarik.ext@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/xen/mm.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c index 3d826c0b5fee..882cd70c7a2f 100644 --- a/arch/arm/xen/mm.c +++ b/arch/arm/xen/mm.c @@ -125,12 +125,10 @@ static int __init xen_mm_init(void) return 0; /* we can work with the default swiotlb */ - if (!io_tlb_default_mem.nslabs) { - rc = swiotlb_init_late(swiotlb_size_or_default(), - xen_swiotlb_gfp(), NULL); - if (rc < 0) - return rc; - } + rc = swiotlb_init_late(swiotlb_size_or_default(), + xen_swiotlb_gfp(), NULL); + if (rc < 0) + return rc; cflush.op = 0; cflush.a.dev_bus_addr = 0; |