[S390] Fix a lot of sparse warnings.

Most noteable part of this commit is the new local header file entry.h
which contains all the function declarations of functions that get only
called from asm code or are arch internal. That way we can avoid extern
declarations in C files.
This is more or less the same that was done for sparc64.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index bb72e0a5b0e0..ac6d4d3218b3 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -2299,9 +2299,8 @@ int dasd_generic_set_offline(struct ccw_device *cdev)
          * in the other openers.
          */
         if (device->block) {
-                struct dasd_block *block = device->block;
-                max_count = block->bdev ? 0 : -1;
-                open_count = (int) atomic_read(&block->open_count);
+                max_count = device->block->bdev ? 0 : -1;
+                open_count = atomic_read(&device->block->open_count);
                 if (open_count > max_count) {
                         if (open_count > 0)
                                 printk(KERN_WARNING "Can't offline dasd "