[PATCH 07/12] s390: cio: fix cio_irb declaration

Arnd Bergmann
2019-04-08T21:26:20Z

clang points out that the declaration of cio_irb does not match the
definition exactly, it is missing the alignment attribute:

../drivers/s390/cio/cio.c:50:1: warning: section does not match previous declaration [-Wsection]
DEFINE_PER_CPU_ALIGNED(struct irb, cio_irb);
^
../include/linux/percpu-defs.h:150:2: note: expanded from macro 'DEFINE_PER_CPU_ALIGNED'
DEFINE_PER_CPU_SECTION(type, name, PER_CPU_ALIGNED_SECTION) \
^
../include/linux/percpu-defs.h:93:9: note: expanded from macro 'DEFINE_PER_CPU_SECTION'
extern __PCPU_ATTRS(sec) __typeof__(type) name; \
^
../include/linux/percpu-defs.h:49:26: note: expanded from macro '__PCPU_ATTRS'
__percpu __attribute__((section(PER_CPU_BASE_SECTION sec))) \
^
../drivers/s390/cio/cio.h:118:1: note: previous attribute is here
DECLARE_PER_CPU(struct irb, cio_irb);
^
../include/linux/percpu-defs.h:111:2: note: expanded from macro 'DECLARE_PER_CPU'
DECLARE_PER_CPU_SECTION(type, name, "")
^
../include/linux/percpu-defs.h:87:9: note: expanded from macro 'DECLARE_PER_CPU_SECTION'
extern __PCPU_ATTRS(sec) __typeof__(type) name
^
../include/linux/percpu-defs.h:49:26: note: expanded from macro '__PCPU_ATTRS'
__percpu __attribute__((section(PER_CPU_BASE_SECTION sec))) \
^
Use DECLARE_PER_CPU_ALIGNED() here, to make the two match.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/s390/cio/cio.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h
index 9811fd8a0c73..92eabbb5f18d 100644
--- a/drivers/s390/cio/cio.h
+++ b/drivers/s390/cio/cio.h
@@ -115,7 +115,7 @@ struct subchannel {
struct schib_config config;
} __attribute__ ((aligned(8)));

-DECLARE_PER_CPU(struct irb, cio_irb);
+DECLARE_PER_CPU_ALIGNED(struct irb, cio_irb);

#define to_subchannel(n) container_of(n, struct subchannel, dev)

--
2.20.0