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Commit 41459d36cf0d57813017dae6080a879cc038e5fe

Authored by Heiko Carstens
Committed by Martin Schwidefsky
1 parent 6b563d8c26
Exists in smarc-l5.0.0_1.0.0-ga and in 5 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga

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

Showing 3 changed files with 4 additions and 4 deletions Side-by-side Diff

arch/s390/kernel/smp.c
Diff comments   View file @ 41459d3
... ... @@ -126,7 +126,7 @@
126 126  
127 127 static inline int pcpu_stopped(struct pcpu *pcpu)
128 128 {
129   - u32 status;
  129 + u32 uninitialized_var(status);
130 130  
131 131 if (__pcpu_sigp(pcpu->address, SIGP_SENSE,
132 132 0, &status) != SIGP_CC_STATUS_STORED)
arch/s390/mm/pgtable.c
Diff comments   View file @ 41459d3
... ... @@ -609,8 +609,8 @@
609 609 */
610 610 unsigned long *page_table_alloc(struct mm_struct *mm, unsigned long vmaddr)
611 611 {
612   - struct page *page;
613   - unsigned long *table;
  612 + unsigned long *uninitialized_var(table);
  613 + struct page *uninitialized_var(page);
614 614 unsigned int mask, bit;
615 615  
616 616 if (mm_has_pgste(mm))
drivers/s390/cio/cio.c
Diff comments   View file @ 41459d3
... ... @@ -1029,7 +1029,7 @@
1029 1029 /* Make sure all subchannels are quiet before we re-ipl an lpar. */
1030 1030 void reipl_ccw_dev(struct ccw_dev_id *devid)
1031 1031 {
1032   - struct subchannel_id schid;
  1032 + struct subchannel_id uninitialized_var(schid);
1033 1033  
1034 1034 s390_reset_system(NULL, NULL);
1035 1035 if (reipl_find_schid(devid, &schid) != 0)