udf: fix 3 signedness & 1 unitialized variable warnings

sparse generated:
fs/udf/inode.c:324:41: warning: incorrect type in argument 4 (different signedness)
fs/udf/inode.c:324:41:    expected long *<noident>
fs/udf/inode.c:324:41:    got unsigned long *<noident>

inode_getblk always set 4th argument to uint32_t value
3rd parameter of map_bh is sector_t (which is unsigned long or u64)
so convert phys value to sector_t

fs/udf/inode.c:1818:47: warning: incorrect type in argument 3 (different signedness)
fs/udf/inode.c:1818:47:    expected int *<noident>
fs/udf/inode.c:1818:47:    got unsigned int *<noident>
fs/udf/inode.c:1826:46: warning: incorrect type in argument 3 (different signedness)
fs/udf/inode.c:1826:46:    expected int *<noident>
fs/udf/inode.c:1826:46:    got unsigned int *<noident>

udf_get_filelongad and udf_get_shortad are called always for uint32_t
values (struct extent_position->offset), so it's safe to convert offset
parameter to uint32_t

gcc warned:
fs/udf/inode.c: In function 'udf_get_block':
fs/udf/inode.c:299: warning: 'phys' may be used uninitialized in this function
initialize it to 0 (if someday someone will break inode_getblk we will catch it immediately)

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Ben Fennema <bfennema@falcon.csc.calpoly.edu>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 6b4409f5019..466d2eea0ec 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -52,7 +52,7 @@ static int udf_update_inode(struct inode *, int);
 static void udf_fill_inode(struct inode *, struct buffer_head *);
 static int udf_alloc_i_data(struct inode *inode, size_t size);
 static struct buffer_head *inode_getblk(struct inode *, sector_t, int *,
-                                        long *, int *);
+                                        sector_t *, int *);
 static int8_t udf_insert_aext(struct inode *, struct extent_position,
                               kernel_lb_addr, uint32_t);
 static void udf_split_extents(struct inode *, int *, int, int,
@@ -307,7 +307,7 @@ static int udf_get_block(struct inode *inode, sector_t block,
 {
         int err, new;
         struct buffer_head *bh;
-        unsigned long phys;
+        sector_t phys = 0;
         struct udf_inode_info *iinfo;
 
         if (!create) {
@@ -489,7 +489,7 @@ out:
 }
 
 static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
-                                        int *err, long *phys, int *new)
+                                        int *err, sector_t *phys, int *new)
 {
         static sector_t last_block;
         struct buffer_head *result = NULL;