linux-kernel - [PATCH] arc: include: asm: define empty SERIAL_PORT

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Message-ID: <5271B609.90805@asianux.com>
Date:	Thu, 31 Oct 2013 09:44:41 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Greg KH <gregkh@...uxfoundation.org>,
	"vgupta@...opsys.com" <vgupta@...opsys.com>,
	Vineet Gupta <Vineet.Gupta1@...opsys.com>
CC:	w.d.hubbs@...il.com, chris@...-brannons.com, kirk@...sers.ca,
	samuel.thibault@...-lyon.org,
	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	speakup@...ille.uwo.ca,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] arc: include: asm: define empty SERIAL_PORT_DFNS in serial.h

For some architectures (e.g. arc, openrisc), BASE_BAUD isn't constant
And SERIAL_PORT_DFNS always use BASE_BAUND, and also all drivers use
SERIAL_PORT_DFNS to initialize static variables, statically.

So need define SERIAL_PORT_DFNS as empty to tell drivers they don't
support SERIAL_PORT_DFNS (mostly like frv and parisc did), or can not
pass compiling

The related error (allmodconfig for arc with gcc-4.8.0):

    CC [M]  drivers/staging/speakup/serialio.o
  drivers/staging/speakup/serialio.c:12:2: error: initializer element is not constant
    SERIAL_PORT_DFNS
    ^
  drivers/staging/speakup/serialio.c:12:2: error: (near initialization for 'rs_table[0].baud_base')
  drivers/staging/speakup/serialio.c:12:2: error: initializer element is not constant
  drivers/staging/speakup/serialio.c:12:2: error: (near initialization for 'rs_table[1].baud_base')
  drivers/staging/speakup/serialio.c:12:2: error: initializer element is not constant
  drivers/staging/speakup/serialio.c:12:2: error: (near initialization for 'rs_table[2].baud_base')
  drivers/staging/speakup/serialio.c:12:2: error: initializer element is not constant
  drivers/staging/speakup/serialio.c:12:2: error: (near initialization for 'rs_table[3].baud_base')


Signed-off-by: Chen Gang <gang.chen@...anux.com>
---
 arch/arc/include/asm/serial.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/arc/include/asm/serial.h b/arch/arc/include/asm/serial.h
index 602b097..f18b772 100644
--- a/arch/arc/include/asm/serial.h
+++ b/arch/arc/include/asm/serial.h
@@ -32,4 +32,6 @@
 #define BASE_BAUD	(arc_get_core_freq() / 16 / 3)
 #endif
 
+#define			SERIAL_PORT_DFNS
+
 #endif /* _ASM_ARC_SERIAL_H */
-- 
1.7.7.6
--
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