ARM: 7671/1: use Kconfig to select uncompress.h

Following the approach handling DEBUG_LL inclusion, the patch creates
a Kconfig symbol CONFIG_UNCOMPRESS_INCLUDE for choosing the correct
uncompress header.  For traditional build, mach/uncompress.h will be
included in arch/arm/boot/compressed/misc.c.  For multiplatform build,
debug/uncompress.h which contains a suite of empty functions will be
used.  In this way, a platform with particular uncompress.h
implementation could choose its own uncompress.h with this Kconfig
option.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 9 insertions, 7 deletions

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index acddddac7ee4..fc54a5bcf5ab 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -601,6 +601,11 @@ config DEBUG_LL_INCLUDE
         default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
         default "mach/debug-macro.S"
 
+config UNCOMPRESS_INCLUDE
+        string
+        default "debug/uncompress.h" if ARCH_MULTIPLATFORM
+        default "mach/uncompress.h"
+
 config EARLY_PRINTK
         bool "Early printk"
         depends on DEBUG_LL
diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c
index df899834d84e..31bd43b82095 100644
--- a/arch/arm/boot/compressed/misc.c
+++ b/arch/arm/boot/compressed/misc.c
@@ -25,13 +25,7 @@ unsigned int __machine_arch_type;
 static void putstr(const char *ptr);
 extern void error(char *x);
 
-#ifdef CONFIG_ARCH_MULTIPLATFORM
-static inline void putc(int c) {}
-static inline void flush(void) {}
-static inline void arch_decomp_setup(void) {}
-#else
-#include <mach/uncompress.h>
-#endif
+#include CONFIG_UNCOMPRESS_INCLUDE
 
 #ifdef CONFIG_DEBUG_ICEDCC
 
diff --git a/arch/arm/include/debug/uncompress.h b/arch/arm/include/debug/uncompress.h
new file mode 100644
index 000000000000..e19955d9e02e
--- /dev/null
+++ b/arch/arm/include/debug/uncompress.h
@@ -0,0 +1,3 @@
+static inline void putc(int c) {}
+static inline void flush(void) {}
+static inline void arch_decomp_setup(void) {}