diff options
| -rw-r--r-- | kernel/resource.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/kernel/resource.c b/kernel/resource.c index 7b36976e5dea..7dc8ad24f915 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -357,6 +357,14 @@ int __weak page_is_ram(unsigned long pfn) return walk_system_ram_range(pfn, 1, NULL, __is_ram) == 1; } +static resource_size_t simple_align_resource(void *data, + const struct resource *avail, + resource_size_t size, + resource_size_t align) +{ + return avail->start; +} + /* * Find empty slot in the resource tree given range and alignment. */ @@ -391,8 +399,8 @@ static int find_resource(struct resource *root, struct resource *new, if (tmp.end > max) tmp.end = max; tmp.start = ALIGN(tmp.start, align); - if (alignf) - tmp.start = alignf(alignf_data, &tmp, size, align); + + tmp.start = alignf(alignf_data, &tmp, size, align); if (tmp.start < tmp.end && tmp.end - tmp.start >= size - 1) { new->start = tmp.start; new->end = tmp.start + size - 1; @@ -428,6 +436,9 @@ int allocate_resource(struct resource *root, struct resource *new, { int err; + if (!alignf) + alignf = simple_align_resource; + write_lock(&resource_lock); err = find_resource(root, new, size, min, max, align, alignf, alignf_data); if (err >= 0 && __request_resource(root, new)) |