rapidio: add debug configuration option

Add debug configuration option for RapidIO subsystem.

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Thomas Moll <thomas.moll@sysgo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 19 insertions, 0 deletions

diff --git a/drivers/rapidio/Kconfig b/drivers/rapidio/Kconfig
index bcb5c2063370..070211a5955c 100644
--- a/drivers/rapidio/Kconfig
+++ b/drivers/rapidio/Kconfig
@@ -21,3 +21,14 @@ config RAPIDIO_ENABLE_RX_TX_PORTS
           than Maintenance transfers.
 
 source "drivers/rapidio/switches/Kconfig"
+
+config RAPIDIO_DEBUG
+        bool "RapidIO subsystem debug messages"
+        depends on RAPIDIO
+        help
+          Say Y here if you want the RapidIO subsystem to produce a bunch of
+          debug messages to the system log. Select this if you are having a
+          problem with the RapidIO subsystem and want to see more of what is
+          going on.
+
+          If you are unsure about this, say N here.
diff --git a/drivers/rapidio/Makefile b/drivers/rapidio/Makefile
index 7c0e1818de51..b6139fe187bf 100644
--- a/drivers/rapidio/Makefile
+++ b/drivers/rapidio/Makefile
@@ -4,3 +4,7 @@
 obj-y += rio.o rio-access.o rio-driver.o rio-scan.o rio-sysfs.o
 
 obj-$(CONFIG_RAPIDIO)           += switches/
+
+ifeq ($(CONFIG_RAPIDIO_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif
diff --git a/drivers/rapidio/switches/Makefile b/drivers/rapidio/switches/Makefile
index 0fece0e6aa89..fe4adc3e8d5f 100644
--- a/drivers/rapidio/switches/Makefile
+++ b/drivers/rapidio/switches/Makefile
@@ -6,3 +6,7 @@ obj-$(CONFIG_RAPIDIO_TSI57X)	+= tsi57x.o
 obj-$(CONFIG_RAPIDIO_CPS_XX)    += idtcps.o
 obj-$(CONFIG_RAPIDIO_TSI568)    += tsi568.o
 obj-$(CONFIG_RAPIDIO_TSI500)    += tsi500.o
+
+ifeq ($(CONFIG_RAPIDIO_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif