iio: add configuration option for debug support

Signed-off-by Otavio Salvador <[email protected]>

Signed-off-by Jonathan Cameron <[email protected]>

---
 drivers/iio/Kconfig  | 7 +++++++
 drivers/iio/Makefile | 2 ++
 2 files changed, 9 insertions(+)

drivers/iio/Kconfig +7 -0

index 524380c..b682f6f 100644
@@ -12,6 +12,13 @@ menuconfig IIO
 
 if IIO
 
+config IIO_DEBUG
+	boolean "Debug support for Industrial I/O"
+	depends on DEBUG_KERNEL
+	help
+	  Say "yes" to enable debug messaging (like dev_dbg and pr_debug)
+	  support in Industrial I/O subsystem and drivers.
+
 config IIO_BUFFER
 	bool "Enable buffer support within IIO"
 	help

drivers/iio/Makefile +0 -0

index 7a3866c..6e43e5b 100644

Quoted 30 lines · Otavio Salvador

Signed-off-by Otavio Salvador <[email protected]>

Signed-off-by Jonathan Cameron <[email protected]>

---
 drivers/iio/Kconfig  | 7 +++++++
 drivers/iio/Makefile | 2 ++
 2 files changed, 9 insertions(+)

drivers/iio/Kconfig +7 -0

index 524380c..b682f6f 100644
@@ -12,6 +12,13 @@ menuconfig IIO
 
 if IIO
 
+config IIO_DEBUG
+     boolean "Debug support for Industrial I/O"
+     depends on DEBUG_KERNEL
+     help
+       Say "yes" to enable debug messaging (like dev_dbg and pr_debug)
+       support in Industrial I/O subsystem and drivers.
+
 config IIO_BUFFER
      bool "Enable buffer support within IIO"
      help

drivers/iio/Makefile +0 -0

index 7a3866c..6e43e5b 100644

drivers/iio/Makefile line 5

Quoted 4 lines

drivers/iio/Makefile +1 -0

@@ -2,6 +2,8 @@
 # Makefile for the industrial I/O core.
 #
 
+ccflags-$(CONFIG_IIO_DEBUG) := -DDEBUG

No, please don't do this. I'm going to revert this patch, as iio, and the whole rest of the kernel, should be relying on the dynamic debug code. Don't force a user to rebuild their kernel to enable/disable debug stuff, that doesn't work well, if at all.

As it is, dev_dbg and pr_debug work just fine with dynamic debugging, no need to explicitly make a new Kconfig option and set the DEBUG flag on at all.