lib: add shared BCH ECC library

[~andy/linux] / block / genhd.c

diff --git a/block/genhd.c b/block/genhd.c
index 5465a824d489724f4aeb6c7b28b2b2483e76a042..6a5b772aa2016f52f986a2cca396daf94ad0c7c4 100644 (file)
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -244,7 +244,7 @@ static struct blk_major_name {
 } *major_names[BLKDEV_MAJOR_HASH_SIZE];
 
 /* index in the above - for now: assume no multimajor ranges */
-static inline int major_to_index(int major)
+static inline int major_to_index(unsigned major)
 {
        return major % BLKDEV_MAJOR_HASH_SIZE;
 }
@@ -828,7 +828,7 @@ static void *show_partition_start(struct seq_file *seqf, loff_t *pos)
        static void *p;
 
        p = disk_seqf_start(seqf, pos);
-       if (!IS_ERR(p) && p && !*pos)
+       if (!IS_ERR_OR_NULL(p) && !*pos)
                seq_puts(seqf, "major minor  #blocks  name\n\n");
        return p;
 }
@@ -1264,6 +1264,8 @@ struct gendisk *alloc_disk_node(int minors, int node_id)
                }
                disk->part_tbl->part[0] = &disk->part0;
 
+               hd_ref_init(&disk->part0);
+
                disk->minors = minors;
                rand_initialize_disk(disk);
                disk_to_dev(disk)->class = &block_class;