s390: add uninitialized_var() to suppress false positive compiler warnings (41459d36) · Commits · 戴 / test

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>

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)

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