b43: Issue warning when RFKILL_INPUT is not enabled

If the system is misconfigured with CONFIG_RFKILL set but CONFIG_RFKILL_INPUT
not set, the built-in radio LEDs will not work. In the current code, no warning
is issued.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43/rfkill.c b/drivers/net/wireless/b43/rfkill.c
index 7b9e99adb8c3..96902da7d661 100644
--- a/drivers/net/wireless/b43/rfkill.c
+++ b/drivers/net/wireless/b43/rfkill.c
@@ -188,6 +188,11 @@ void b43_rfkill_init(struct b43_wldev *dev)
                         "The built-in radio LED will not work.\n");
 #endif /* CONFIG_RFKILL_INPUT */
 
+#if !defined(CONFIG_RFKILL_INPUT) && !defined(CONFIG_RFKILL_INPUT_MODULE)
+        b43warn(wl, "The rfkill-input subsystem is not available. "
+                "The built-in radio LED will not work.\n");
+#endif
+
         err = input_register_polled_device(rfk->poll_dev);
         if (err)
                 goto err_unreg_rfk;