[ARM] mmp: fix for variables in uncompress.h being discarded

Due to commit:

    5de813b  ARM: Eliminate decompressor -Dstatic= PIC hack

The data section will be discarded for the decompressor, thus move the
static variables into BSS section by initializing them at run time.

Reported-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

diff --git a/arch/arm/mach-mmp/include/mach/uncompress.h b/arch/arm/mach-mmp/include/mach/uncompress.h
index a7dcc53..85bd8a2 100644 (file)
--- a/arch/arm/mach-mmp/include/mach/uncompress.h
+++ b/arch/arm/mach-mmp/include/mach/uncompress.h
@@ -14,7 +14,7 @@
 #define UART2_BASE     (APB_PHYS_BASE + 0x17000)
 #define UART3_BASE     (APB_PHYS_BASE + 0x18000)
 
-static volatile unsigned long *UART = (unsigned long *)UART2_BASE;
+static volatile unsigned long *UART;
 
 static inline void putc(char c)
 {
@@ -37,6 +37,9 @@ static inline void flush(void)
 
 static inline void arch_decomp_setup(void)
 {
+       /* default to UART2 */
+       UART = (unsigned long *)UART2_BASE;
+
        if (machine_is_avengers_lite())
                UART = (unsigned long *)UART3_BASE;
 }