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authorArnd Bergmann <arnd@arndb.de>2017-06-08 10:53:10 +0200
committerStefano Stabellini <sstabellini@kernel.org>2017-06-08 15:07:38 -0700
commit9cc91f212111cdcbefa02dcdb7dd443f224bf52c (patch)
treef72416924479a8f9fba793a1a6c0844761dde545 /arch/arm/include
parenta2237ae761d9baa0e814e61140ca4524e31eb92b (diff)
xen: avoid type warning in xchg_xen_ulong
The improved type-checking version of container_of() triggers a warning for xchg_xen_ulong, pointing out that 'xen_ulong_t' is unsigned, but atomic64_t contains a signed value: drivers/xen/events/events_2l.c: In function 'evtchn_2l_handle_events': drivers/xen/events/events_2l.c:187:1020: error: call to '__compiletime_assert_187' declared with attribute error: pointer type mismatch in container_of() This adds a cast to work around the warning. Cc: Ian Abbott <abbotti@mev.co.uk> Fixes: 85323a991d40 ("xen: arm: mandate EABI and use generic atomic operations.") Fixes: daa2ac80834d ("kernel.h: handle pointers to arrays better in container_of()") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Stefano Stabellini <sstabellini@kernel.org> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> Acked-by: Ian Abbott <abbotti@mev.co.uk>
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/xen/events.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/include/asm/xen/events.h b/arch/arm/include/asm/xen/events.h
index 71e473d05fcc..620dc75362e5 100644
--- a/arch/arm/include/asm/xen/events.h
+++ b/arch/arm/include/asm/xen/events.h
@@ -16,7 +16,7 @@ static inline int xen_irqs_disabled(struct pt_regs *regs)
return raw_irqs_disabled_flags(regs->ARM_cpsr);
}
-#define xchg_xen_ulong(ptr, val) atomic64_xchg(container_of((ptr), \
+#define xchg_xen_ulong(ptr, val) atomic64_xchg(container_of((long long*)(ptr),\
atomic64_t, \
counter), (val))