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authorBjorn Helgaas <bjorn.helgaas@hp.com>2008-08-20 02:53:41 +0400
committerLen Brown <len.brown@intel.com>2008-10-11 07:33:53 +0400
commit97ef062bbe08f46903f29ecdf432be302c977f3b (patch)
treee09e9a171ac2d3c79db945ee95145f17cdce82df /drivers/pnp/base.h
parent2663f60d434139298835af690f4891cec5c1e501 (diff)
downloadlinux-97ef062bbe08f46903f29ecdf432be302c977f3b.tar.xz
PNP: add CONFIG_PNP_DEBUG_MESSAGES and pnp_dbg()
This adds the core function pnp_dbg() and a new config option to enable it. The PNP core debugging messages can be enabled at boot-time with the "pnp.debug" kernel parameter. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/pnp/base.h')
-rw-r--r--drivers/pnp/base.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/pnp/base.h b/drivers/pnp/base.h
index 9fd7bb9b7dce..5e4e82c82659 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