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Commit 41459d36 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

s390: add uninitialized_var() to suppress false positive compiler warnings 



Get rid of these:

arch/s390/kernel/smp.c:134:19: warning: ‘status’ may be used uninitialized in this function [-Wuninitialized]
arch/s390/mm/pgtable.c:641:10: warning: ‘table’ may be used uninitialized in this function [-Wuninitialized]
arch/s390/mm/pgtable.c:644:12: warning: ‘page’ may be used uninitialized in this function [-Wuninitialized]
drivers/s390/cio/cio.c:1037:14: warning: ‘schid’ may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 6b563d8c

arch/s390/kernel/smp.c

+1 −1
Original line number Diff line number Diff line
@@ -126,7 +126,7 @@ static int pcpu_sigp_retry(struct pcpu *pcpu, u8 order, u32 parm) 


static inline int pcpu_stopped(struct pcpu *pcpu)

{

	u32 status;

	u32 uninitialized_var(status);



	if (__pcpu_sigp(pcpu->address, SIGP_SENSE,

			0, &status) != SIGP_CC_STATUS_STORED)

arch/s390/mm/pgtable.c

+2 −2
Original line number Diff line number Diff line
@@ -609,8 +609,8 @@ static inline unsigned int atomic_xor_bits(atomic_t *v, unsigned int bits) 
 */

unsigned long *page_table_alloc(struct mm_struct *mm, unsigned long vmaddr)

{

	struct page *page;

	unsigned long *table;

	unsigned long *uninitialized_var(table);

	struct page *uninitialized_var(page);

	unsigned int mask, bit;



	if (mm_has_pgste(mm))

drivers/s390/cio/cio.c

+1 −1
Original line number Diff line number Diff line
@@ -1029,7 +1029,7 @@ extern void do_reipl_asm(__u32 schid); 
/* Make sure all subchannels are quiet before we re-ipl an lpar. */

void reipl_ccw_dev(struct ccw_dev_id *devid)

{

	struct subchannel_id schid;

	struct subchannel_id uninitialized_var(schid);



	s390_reset_system(NULL, NULL);

	if (reipl_find_schid(devid, &schid) != 0)