diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/blk.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/include/blk.h b/include/blk.h index 2caac9c96b..547c3b48dc 100644 --- a/include/blk.h +++ b/include/blk.h @@ -270,7 +270,8 @@ int blk_next_device(struct udevice **devp); * @drv_name: Driver name to use for the block device * @name: Name for the device * @if_type: Interface type (enum if_type_t) - * @devnum: Device number, specific to the interface type + * @devnum: Device number, specific to the interface type, or -1 to + * allocate the next available number * @blksz: Block size of the device in bytes (typically 512) * @size: Total size of the device in bytes * @devp: the new device (which has not been probed) @@ -299,6 +300,18 @@ int blk_prepare_device(struct udevice *dev); */ int blk_unbind_all(int if_type); +/** + * blk_find_max_devnum() - find the maximum device number for an interface type + * + * Finds the last allocated device number for an interface type @if_type. The + * next number is safe to use for a newly allocated device. + * + * @if_type: Interface type to scan + * @return maximum device number found, or -ENODEV if none, or other -ve on + * error + */ +int blk_find_max_devnum(enum if_type if_type); + #else #include <errno.h> /* |
