ACPI: fix empty macros found by -Wextra
ACPI has a ton of macros which make a bunch of empty if's when configured
in non-debug mode.
[lenb: The code it complaines about is functionally correct,
so this patch is just to make -Wextra happier]
#define DBG()
if(...)
DBG();
next_c_statement
which turns into
if(...) ;
next_c_statement
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 41427a4..4893e25 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -16,7 +16,7 @@
#if ACPI_GLUE_DEBUG
#define DBG(x...) printk(PREFIX x)
#else
-#define DBG(x...)
+#define DBG(x...) do { } while(0)
#endif
static LIST_HEAD(bus_type_list);
static DECLARE_RWSEM(bus_type_sem);
