b43: Dynamically control log verbosity
Dynamically control the log verbosity with a module parameter.
This enables us to dynamically enable debugging messages (or disable
info, warn, error messages) via module parameter or /sys/module/b43/parameters/verbose.
This increases the module size by about 3k. But in practice it reduces the
module size for the user, because some distributions ship the b43 module
with CONFIG_B43_DEBUG set, which increases the module by about 15k.
So with this patch applied, distributions should really _disable_ CONFIG_B43_DEBUG.
There is no reason to keep it in a production-release kernel.
So we have a net reduction in size by about 12k.
This patch also adds a printk of the wireless core revision, so people
don't have to enable SSB debugging to get the wireless core revision.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43/Kconfig b/drivers/net/wireless/b43/Kconfig
index 1f81d36..aab71a7 100644
--- a/drivers/net/wireless/b43/Kconfig
+++ b/drivers/net/wireless/b43/Kconfig
@@ -110,10 +110,18 @@
bool "Broadcom 43xx debugging"
depends on B43
---help---
- Broadcom 43xx debugging messages.
+ Broadcom 43xx debugging.
- Say Y, if you want to find out why the driver does not
- work for you.
+ This adds additional runtime sanity checks and statistics to the driver.
+ These checks and statistics might me expensive and hurt runtime performance
+ of your system.
+ This also adds the b43 debugfs interface.
+
+ Do not enable this, unless you are debugging the driver.
+
+ Say N, if you are a distributor or user building a release kernel
+ for production use.
+ Only say Y, if you are debugging a problem in the b43 driver sourcecode.
config B43_FORCE_PIO
bool "Force usage of PIO instead of DMA"