block: convert !IS_ERR(p) && p to !IS_ERR_NOR_NULL(p)

Signed-off-by: Yang Zhang <kthreadd@gmail.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/block/genhd.c b/block/genhd.c
index 5fa2b44a72ff..79b9e327f3cb 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -735,7 +735,7 @@ 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;
 }