[PATCH] block: fix UUID string buffer length

[Rabin Vincent]

The UUID string buffer is several bytes shorter than what is actually
required, because the space for the hyphens hasn't been taken into
account.  Fix it, while also making it a regular char[] rather than a
u8[] to make it clear what we're storing here.

Cc: Will Drewry <wad@xxxxxxxxxxxx>
Signed-off-by: Rabin Vincent <rabin@xxxxxx>
---
 block/genhd.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/genhd.c b/block/genhd.c
index 8dfa21e..fa955b5 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -736,7 +736,7 @@ void __init printk_all_partitions(void)
 		struct hd_struct *part;
 		char name_buf[BDEVNAME_SIZE];
 		char devt_buf[BDEVT_SIZE];
-		u8 uuid[PARTITION_META_INFO_UUIDLTH * 2 + 1];
+		char uuid[sizeof("xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx")];
 
 		/*
 		 * Don't show empty devices or things that have been
@@ -755,7 +755,7 @@ void __init printk_all_partitions(void)
 		while ((part = disk_part_iter_next(&piter))) {
 			bool is_part0 = part == &disk->part0;
 
-			uuid[0] = 0;
+			uuid[0] = '\0';
 			if (part->info)
 				part_unpack_uuid(part->info->uuid, uuid);
 
-- 
1.7.5.4

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