Current max block major is 254, corresponding to 255 elements in
major_names. Correct the comment of register_blkdev() to reflect
the real range.
Signed-off-by: Wang Sheng-Hui <shhuiw@xxxxxxxxxxx>
---
block/genhd.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/block/genhd.c b/block/genhd.c
index 9f42526..2a733a6 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -271,18 +271,18 @@ void blkdev_show(struct seq_file *seqf, off_t offset)
/**
* register_blkdev - register a new block device
*
- * @major: the requested major device number [1..255]. If @major=0, try to
+ * @major: the requested major device number [0..254]. If @major=0, try to
* allocate any unused major number.
* @name: the name of the new block device as a zero terminated string
*
* The @name must be unique within the system.
*
* The return value depends on the @major input parameter.
- * - if a major device number was requested in range [1..255] then the
+ * - if a major device number was requested in range [1..254] then the
* function returns zero on success, or a negative error code
* - if any unused major number was requested with @major=0 parameter
* then the return value is the allocated major number in range
- * [1..255] or a negative error code otherwise
+ * [1..254] or a negative error code otherwise
*/
int register_blkdev(unsigned int major, const char *name)
{
--
2.1.4
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