diff options
| -rw-r--r-- | kernel/resource.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/kernel/resource.c b/kernel/resource.c index b3a3a1fc499e..17bcb189d530 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -318,14 +318,14 @@ 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 * 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. + * -1. Returns -EINVAL for other invalid parameters. * * This function walks the whole tree and not just first level children * unless @first_lvl is true. @@ -390,7 +390,9 @@ static int __walk_iomem_res_desc(resource_size_t start, resource_size_t end, } /** - * Walks through iomem resources and calls func() with matching resource + * walk_iomem_res_desc - walk through iomem resources + * + * 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. @@ -399,6 +401,8 @@ static int __walk_iomem_res_desc(resource_size_t start, resource_size_t end, * @flags: I/O resource flags * @start: start addr * @end: end addr + * @arg: function argument for the callback @func + * @func: callback function that is called for each qualifying resource area * * NOTE: For a new descriptor search, define a new IORES_DESC in * <linux/ioport.h> and set it in 'desc' of a target resource entry. |