m32r doesn't use GENERIC_IOMAP, and it doesn't currently implement e.g.
ioread32be() on its own. Add definitions to <asm/io.h> to fix build
failures in common drivers that use these functions.
drivers/tty/serial/8250/8250_core.c: In function 'mem32be_serial_out':
>> drivers/tty/serial/8250/8250_core.c:434:2: error: implicit declaration of function 'iowrite32be' [-Werror=implicit-function-declaration]
iowrite32be(value, p->membase + offset);
^
drivers/tty/serial/8250/8250_core.c: In function 'mem32be_serial_in':
>> drivers/tty/serial/8250/8250_core.c:440:2: error: implicit declaration of function 'ioread32be' [-Werror=implicit-function-declaration]
return ioread32be(p->membase + offset);
^
cc1: some warnings being treated as errors
Compile-tested only.
Signed-off-by: Kevin Cernekee <cernekee@xxxxxxxxx>
---
arch/m32r/include/asm/io.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/m32r/include/asm/io.h b/arch/m32r/include/asm/io.h
index 343ae4c..5fb2ad8 100644
--- a/arch/m32r/include/asm/io.h
+++ b/arch/m32r/include/asm/io.h
@@ -4,6 +4,7 @@
#include <linux/string.h>
#include <linux/compiler.h>
#include <asm/page.h> /* __va */
+#include <asm/byteorder.h>
#ifdef __KERNEL__
@@ -169,6 +170,11 @@ static inline void _writel(unsigned long l, unsigned long addr)
#define iowrite16 writew
#define iowrite32 writel
+#define ioread16be(addr) be16_to_cpu(readw(addr))
+#define ioread32be(addr) be32_to_cpu(readl(addr))
+#define iowrite16be(val, addr) writew(cpu_to_be16(val), addr)
+#define iowrite32be(val, addr) writel(cpu_to_be32(val), addr)
+
#define mmiowb()
#define flush_write_buffers() do { } while (0) /* M32R_FIXME */
--
2.1.0
--
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