[PATCH 3/3] debug_ll: pl011: define PUTC_LL only when requested

[Sascha Hauer <s.hauer@pengutronix.de>]

pl011.h is mainly included from include/debug_ll.h to provide the
PUTC_LL() implementation. It is also included by some boards to get
debug_ll_pl011_putc(). If a board includes it and at the same time
DEBUG_LL is enabled for another board we end up with conflicting
definitions of PUTC_LL(). To prevent this add a #define DEFINE_PUTC_LL
to include/debug_ll.h. A debug_ll.h file now may only provide PUTC_LL()
when this define is set.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 include/debug_ll.h       | 2 ++
 include/debug_ll/pl011.h | 6 +-----
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/include/debug_ll.h b/include/debug_ll.h
index 1410783b73..4cab96fbc4 100644
--- a/include/debug_ll.h
+++ b/include/debug_ll.h
@@ -19,7 +19,9 @@
  * this initialization. Depending on the PUTC_LL implementation the board might
  * also hang in PUTC_LL without proper initialization.
  */
+#define DEFINE_PUTC_LL
 #include <asm/debug_ll.h>
+#undef DEFINE_PUTC_LL
 #endif
 
 #if defined (CONFIG_DEBUG_LL)
diff --git a/include/debug_ll/pl011.h b/include/debug_ll/pl011.h
index aeec456f20..bded6720aa 100644
--- a/include/debug_ll/pl011.h
+++ b/include/debug_ll/pl011.h
@@ -16,11 +16,7 @@ static inline void debug_ll_pl011_putc(void __iomem *base, int c)
 	writel(c, base + UART01x_DR);
 }
 
-#ifdef CONFIG_DEBUG_LL
-
-#ifndef DEBUG_LL_UART_ADDR
-#error DEBUG_LL_UART_ADDR is undefined!
-#endif
+#if defined(CONFIG_DEBUG_LL) && defined(DEFINE_PUTC_LL)
 
 static inline void PUTC_LL(char c)
 {

-- 
2.47.3