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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-01-10 12:33:54 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-01-10 12:33:54 +0000
commit198a6d5a6189501e2b8abf4e3149ccb337866f65 (patch)
tree772eb567f7b42b4ebf0be739bf33c56ffbfb95ab /include/asm-arm/system.h
parentfd0b45dfd1858c6b49d06355a460bcf36d654c06 (diff)
[ARM] pxa: silence warnings from cpu_is_xxx() macros
If only a single CPU type is selected, __cpu_is_xxx() doesn't use its argument. This causes the compiler to issue a warning about an unused variable in the parent function. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm/system.h')
-rw-r--r--include/asm-arm/system.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h
index 94ea8c6dc1a4..28425c473e71 100644
--- a/include/asm-arm/system.h
+++ b/include/asm-arm/system.h
@@ -75,8 +75,21 @@
#ifndef __ASSEMBLY__
#include <linux/linkage.h>
+#include <linux/stringify.h>
#include <linux/irqflags.h>
+/*
+ * The CPU ID never changes at run time, so we might as well tell the
+ * compiler that it's constant. Use this function to read the CPU ID
+ * rather than directly reading processor_id or read_cpuid() directly.
+ */
+static inline unsigned int read_cpuid_id(void) __attribute_const__;
+
+static inline unsigned int read_cpuid_id(void)
+{
+ return read_cpuid(CPUID_ID);
+}
+
#define __exception __attribute__((section(".exception.text")))
struct thread_info;