diff options
Diffstat (limited to 'drivers/base/dma-contiguous.c')
| -rw-r--r-- | drivers/base/dma-contiguous.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c index 83969f8c572..6467c919c50 100644 --- a/drivers/base/dma-contiguous.c +++ b/drivers/base/dma-contiguous.c @@ -176,14 +176,24 @@ static int __init cma_activate_area(struct cma *cma) base_pfn = pfn; for (j = pageblock_nr_pages; j; --j, pfn++) { WARN_ON_ONCE(!pfn_valid(pfn)); + /* + * alloc_contig_range requires the pfn range + * specified to be in the same zone. Make this + * simple by forcing the entire CMA resv range + * to be in the same zone. + */ if (page_zone(pfn_to_page(pfn)) != zone) - return -EINVAL; + goto err; } init_cma_reserved_pageblock(pfn_to_page(base_pfn)); } while (--i); mutex_init(&cma->lock); return 0; + +err: + kfree(cma->bitmap); + return -EINVAL; } static struct cma cma_areas[MAX_CMA_AREAS]; |