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-rw-r--r--drivers/pnp/Kconfig14
-rw-r--r--drivers/pnp/base.h10
-rw-r--r--drivers/pnp/core.c11
3 files changed, 35 insertions, 0 deletions
diff --git a/drivers/pnp/Kconfig b/drivers/pnp/Kconfig
index 821933f9aa5..8a3237f9f2a 100644
--- a/drivers/pnp/Kconfig
+++ b/drivers/pnp/Kconfig
@@ -20,6 +20,20 @@ menuconfig PNP
If unsure, say Y.
+config PNP_DEBUG_MESSAGES
+ default y
+ bool "PNP debugging messages"
+ depends on PNP
+ help
+ Say Y here if you want the PNP layer to be able to produce debugging
+ messages if needed. The messages can be enabled at boot-time with
+ the pnp.debug kernel parameter.
+
+ This option allows you to save a bit of space if you do not want
+ the messages to even be built into the kernel.
+
+ If you have any doubts about this, say Y here.
+
if PNP
config PNP_DEBUG
diff --git a/drivers/pnp/base.h b/drivers/pnp/base.h
index 9fd7bb9b7dc..5e4e82c8265 100644
--- a/drivers/pnp/base.h
+++ b/drivers/pnp/base.h
@@ -166,3 +166,13 @@ struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
resource_size_t start,
resource_size_t end, int flags);
+
+extern int pnp_debug;
+
+#if defined(CONFIG_PNP_DEBUG_MESSAGES)
+#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
diff --git a/drivers/pnp/core.c b/drivers/pnp/core.c
index 7cb1ffc14d4..61291b5bfe1 100644
--- a/drivers/pnp/core.c
+++ b/drivers/pnp/core.c
@@ -221,3 +221,14 @@ static int __init pnp_init(void)
}
subsys_initcall(pnp_init);
+
+int pnp_debug;
+
+#if defined(CONFIG_PNP_DEBUG_MESSAGES)
+static int __init pnp_debug_setup(char *__unused)
+{
+ pnp_debug = 1;
+ return 1;
+}
+__setup("pnp.debug", pnp_debug_setup);
+#endif