diff options
| -rw-r--r-- | kernel/resource.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/kernel/resource.c b/kernel/resource.c index 17bcb189d530..b0fbf685c77a 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -318,17 +318,24 @@ int release_resource(struct resource *old) EXPORT_SYMBOL(release_resource); -/* - * Finds the lowest iomem resource that covers part of [start..end]. The - * caller must specify start, end, flags, and desc (which may be +/** + * Finds the lowest iomem resource that covers part of [@start..@end]. The + * caller must specify @start, @end, @flags, and @desc (which may be * IORES_DESC_NONE). * - * If a resource is found, returns 0 and *res is overwritten with the part - * of the resource that's within [start..end]; if none is found, returns - * -1. Returns -EINVAL for other invalid parameters. + * If a resource is found, returns 0 and @*res is overwritten with the part + * of the resource that's within [@start..@end]; if none is found, returns + * -1 or -EINVAL for other invalid parameters. * * This function walks the whole tree and not just first level children * unless @first_lvl is true. + * + * @start: start address of the resource searched for + * @end: end address of same resource + * @flags: flags which the resource must have + * @desc: descriptor the resource must have + * @first_lvl: walk only the first level children, if set + * @res: return ptr, if resource found */ static int find_next_iomem_res(resource_size_t start, resource_size_t end, unsigned long flags, unsigned long desc, @@ -390,9 +397,7 @@ static int __walk_iomem_res_desc(resource_size_t start, resource_size_t end, } /** - * walk_iomem_res_desc - walk through iomem resources - * - * Walks through iomem resources and calls @func() with matching resource + * Walks through iomem resources and calls func() with matching resource * ranges. This walks through whole tree and not just first level children. * All the memory ranges which overlap start,end and also match flags and * desc are valid candidates. |