net/wireless: add COUNTRY to to regulatory device uevent

Regulatory devices issue change uevents to inform userspace of a need
to call the crda tool; however these can often be sent before udevd is
running, and were not previously included in the results of
udevadm trigger (which requests a new change event using the /uevent
attribute of the sysfs object).

Add a uevent function to the device type which includes the COUNTRY
information from the last request if it has yet to be processed, the
case of multiple requests is already handled in the code by checking
whether an unprocessed one is queued in the same manner and refusing
to queue a new one.

The existing udev rule continues to work as before.

Signed-off-by: Scott James Remnant <keybuk@google.com>
Acked-By: Kay Sievers <kay.sievers@vrfy.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/wireless/reg.h b/net/wireless/reg.h
index c4695d07af23..b67d1c3a2fb9 100644
--- a/net/wireless/reg.h
+++ b/net/wireless/reg.h
@@ -8,6 +8,7 @@ bool reg_is_valid_request(const char *alpha2);
 
 int regulatory_hint_user(const char *alpha2);
 
+int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env);
 void reg_device_remove(struct wiphy *wiphy);
 
 int __init regulatory_init(void);