[PATCH -next] dvb/frontends: fix duplicate 'debug' symbol

[PATCH -next] dvb/frontends: fix duplicate 'debug' symbol

[Randy Dunlap]

From: Randy Dunlap <randy.dunlap@oracle.com>

Fix dvb frontend debug variable to be static, to avoid linker
errors:

drivers/built-in.o:(.data+0xf4b0): multiple definition of `debug'
arch/x86/kernel/built-in.o:(.kprobes.text+0x90): first defined here
ld: Warning: size of symbol `debug' changed from 85 in arch/x86/kernel/built-in.o to 4 in drivers/built-in.o

It would also be Good if arch/x86/kernel/entry_32.S didn't have a
non-static 'debug' symbol.  OTOH, it helps catch things like this one.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
---
 drivers/media/dvb/frontends/stv0900_core.c |    4 ++--
 drivers/media/dvb/frontends/stv0900_priv.h |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

--- linux-next-20090306.orig/drivers/media/dvb/frontends/stv0900_core.c
+++ linux-next-20090306/drivers/media/dvb/frontends/stv0900_core.c
@@ -34,8 +34,8 @@
 #include "stv0900_priv.h"
 #include "stv0900_init.h"
 
-int debug = 1;
-module_param(debug, int, 0644);
+static int stvdebug = 1;
+module_param_named(debug, stvdebug, int, 0644);
 
 /* internal params node */
 struct stv0900_inode {
--- linux-next-20090306.orig/drivers/media/dvb/frontends/stv0900_priv.h
+++ linux-next-20090306/drivers/media/dvb/frontends/stv0900_priv.h
@@ -62,11 +62,11 @@
 
 #define dmd_choose(a, b)	(demod = STV0900_DEMOD_2 ? b : a))
 
-extern int debug;
+static int stvdebug;
 
 #define dprintk(args...) \
 	do { \
-		if (debug) \
+		if (stvdebug) \
 			printk(KERN_DEBUG args); \
 	} while (0)
 

Re: [PATCH -next] dvb/frontends: fix duplicate 'debug' symbol

[Andrew Morton]

On Fri, 06 Mar 2009 13:24:46 -0800
Randy Dunlap <randy.dunlap@oracle.com> wrote:

> It would also be Good if arch/x86/kernel/entry_32.S didn't have a
> non-static 'debug' symbol.  OTOH, it helps catch things like this one.

heh, yes, it's a feature.  We should put it in init/main.c, along with
100-odd other dont-do-that-dopey symbols.

Re: [PATCH -next] dvb/frontends: fix duplicate 'debug' symbol

[Randy Dunlap]

Andrew Morton wrote:
> On Fri, 06 Mar 2009 13:24:46 -0800
> Randy Dunlap <randy.dunlap@oracle.com> wrote:
> 
>> It would also be Good if arch/x86/kernel/entry_32.S didn't have a
>> non-static 'debug' symbol.  OTOH, it helps catch things like this one.
> 
> heh, yes, it's a feature.  We should put it in init/main.c, along with
> 100-odd other dont-do-that-dopey symbols.

hm, I think I'll leave that patch for you or Ingo. ;)

-- 
~Randy