linux-kernel - [PATCH] usb: gadget: Make VERBOSE

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Date:	Fri, 11 Oct 2013 08:07:00 +0200
From:	Andreas Larsson <andreas@...sler.com>
To:	Felipe Balbi <balbi@...com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	software@...sler.com
Subject: [PATCH] usb: gadget: Make VERBOSE_DEBUG enableable via Kconfig

Signed-off-by: Andreas Larsson <andreas@...sler.com>
---
 drivers/usb/gadget/Kconfig  |   14 ++++++++++++++
 drivers/usb/gadget/Makefile |    3 ++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 48cddf3..922a04d 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -58,6 +58,20 @@ config USB_GADGET_DEBUG
 	   trying to track down.  Never enable these messages for a
 	   production build.
 
+config USB_GADGET_VERBOSE
+	bool "Verbose debugging Messages (DEVELOPMENT)"
+	depends on USB_GADGET_DEBUG
+	help
+	   Many controller and gadget drivers will print verbose debugging
+	   messages if you use this option to ask for those messages.
+
+	   Avoid enabling these messages, even if you're actively
+	   debugging such a driver.  Many drivers will emit so many
+	   messages that the driver timings are affected, which will
+	   either create new failure modes or remove the one you're
+	   trying to track down.  Never enable these messages for a
+	   production build.
+
 config USB_GADGET_DEBUG_FILES
 	boolean "Debugging information files (DEVELOPMENT)"
 	depends on PROC_FS
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 386db9d..ba872ba 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -1,7 +1,8 @@
 #
 # USB peripheral controller drivers
 #
-ccflags-$(CONFIG_USB_GADGET_DEBUG) := -DDEBUG
+ccflags-$(CONFIG_USB_GADGET_DEBUG)	:= -DDEBUG
+ccflags-$(CONFIG_USB_GADGET_VERBOSE)	+= -DVERBOSE_DEBUG
 
 obj-$(CONFIG_USB_GADGET)	+= udc-core.o
 obj-$(CONFIG_USB_LIBCOMPOSITE)	+= libcomposite.o
-- 
1.7.10.4

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