[PATCH] ipw2200: print geography code upon module load

Given the amount of support requests for the meaning of the geography code
I've written a patch for printing this information on module load no matter
the debug level.

I've also added a section to the README.ipw2200 file listing the geography
codes and their meaning.

Signed-off-by: Henrik Brix Andersen <brix@gentoo.org>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/Documentation/networking/README.ipw2200 b/Documentation/networking/README.ipw2200
index c6492d3839fa..712c5681338b 100644
--- a/Documentation/networking/README.ipw2200
+++ b/Documentation/networking/README.ipw2200
@@ -26,6 +26,7 @@ Index
 1.2. Module parameters
 1.3. Wireless Extension Private Methods
 1.4. Sysfs Helper Files
+1.5. Supported channels
 2.   Ad-Hoc Networking
 3.   Interacting with Wireless Tools
 3.1. iwconfig mode
@@ -314,6 +315,35 @@ For the device level files, see /sys/bus/pci/drivers/ipw2200:
         running ifconfig and is therefore disabled by default.
 
 
+1.5. Supported channels
+-----------------------------------------------
+
+Upon loading the Intel(R) PRO/Wireless 2915ABG Driver for Linux, a
+message stating the detected geography code and the number of 802.11
+channels supported by the card will be displayed in the log.
+
+The geography code corresponds to a regulatory domain as shown in the
+table below.
+
+                                          Supported channels
+Code    Geography                       802.11bg        802.11a
+
+---     Restricted                      11               0
+ZZF     Custom US/Canada                11               8
+ZZD     Rest of World                   13               0
+ZZA     Custom USA & Europe & High      11              13
+ZZB     Custom NA & Europe              11              13
+ZZC     Custom Japan                    11               4
+ZZM     Custom                          11               0
+ZZE     Europe                          13              19
+ZZJ     Custom Japan                    14               4
+ZZR     Rest of World                   14               0
+ZZH     High Band                       13               4
+ZZG     Custom Europe                   13               4
+ZZK     Europe                          13              24
+ZZL     Europe                          11              13
+
+
 2.   Ad-Hoc Networking
 -----------------------------------------------