From: Heiko Carstens Date: Fri, 14 Sep 2012 09:09:52 +0000 (+0200) Subject: s390: add uninitialized_var() to suppress false positive compiler warnings X-Git-Tag: v3.7-rc1~179^2~13 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=41459d36cf0d57813017dae6080a879cc038e5fe;p=profile%2Fivi%2Fkernel-x86-ivi.git 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 Signed-off-by: Martin Schwidefsky --- diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 8676aab..ea431e5 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -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) diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index d83ecbf..b402991 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -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)) diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 33d1ef7..8e927b9 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -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)