linux-kernel - [PATCH 19/25] pnp: if CONFIG_DYNAMIC_DEBUG, use pnp.ddebug instead of pnp.debug

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Message-Id: <1322683014-13285-20-git-send-email-jim.cromie@gmail.com>
Date:	Wed, 30 Nov 2011 12:56:48 -0700
From:	jim.cromie@...il.com
To:	jbaron@...hat.com
Cc:	greg@...ah.com, joe@...ches.com, bart.vanassche@...il.com,
	linux-kernel@...r.kernel.org, Jim Cromie <jim.cromie@...il.com>,
	Thomas Renninger <trenn@...e.de>
Subject: [PATCH 19/25] pnp: if CONFIG_DYNAMIC_DEBUG, use pnp.ddebug instead of pnp.debug

From: Jim Cromie <jim.cromie@...il.com>

resubmit of https://lkml.org/lkml/2010/9/15/398

This allows usage of generic pnp.ddebug debug parameter instead of
pnp.debug PNP specific parameter.

I wonder whether CONFIG_PNP_DEBUG_MESSAGES can vanish totally with
this or at some time. Only advantage having it is: If you are
restricted and your kernel must not exceed X bytes, you cannot compile
in PNP debug messages only, but you have to compile in all debug
messages.

Signed-off-by: Jim Cromie <jim.cromie@...il.com>
CC: Thomas Renninger <trenn@...e.de>
---
 drivers/pnp/base.h |    8 ++++++--
 drivers/pnp/core.c |   13 +++++++++++++
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/pnp/base.h b/drivers/pnp/base.h
index fa4e0a5..28e98aa 100644
--- a/drivers/pnp/base.h
+++ b/drivers/pnp/base.h
@@ -173,12 +173,16 @@ struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
 					  resource_size_t start,
 					  resource_size_t end);
 
-extern int pnp_debug;
-
+#if defined(CONFIG_DYNAMIC_DEBUG)
+#define pnp_dbg(dev, format, arg...)					\
+	({ dev_dbg(dev, format, ## arg); 0; })
+#else
 #if defined(CONFIG_PNP_DEBUG_MESSAGES)
+extern int pnp_debug;
 #define pnp_dbg(dev, format, arg...)					\
 	({ if (pnp_debug) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
 #else
 #define pnp_dbg(dev, format, arg...)					\
 	({ if (0) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
 #endif
+#endif
diff --git a/drivers/pnp/core.c b/drivers/pnp/core.c
index cb6ce42..332010a 100644
--- a/drivers/pnp/core.c
+++ b/drivers/pnp/core.c
@@ -219,6 +219,19 @@ subsys_initcall(pnp_init);
 
 int pnp_debug;
 
+#if defined(CONFIG_DYNAMIC_DEBUG)
+static int __init pnp_debug_setup(char *__unused)
+{
+	printk(KERN_INFO "DYNAMIC_DEBUG enabled use pnp.ddebug instead of "
+		"pnp.debug boot param\n");
+	return 1;
+}
+__setup("pnp.debug", pnp_debug_setup);
+
+#else
+
 #if defined(CONFIG_PNP_DEBUG_MESSAGES)
 module_param_named(debug, pnp_debug, int, 0644);
 #endif
+
+#endif
-- 
1.7.7.3

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