[PATCH] Fix kernel oops when starting wpa_supplicant.

[Nelson Castillo]

Fix kernel oops when starting wpa_supplicant.
This closes bug #2267.

Signed-off-by: Mike Westerhof <mwester at dls.net>
---

 drivers/ar6000/ar6000/wireless_ext.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/drivers/ar6000/ar6000/wireless_ext.c b/drivers/ar6000/ar6000/wireless_ext.c
index d9a5920..af78ae0 100644
--- a/drivers/ar6000/ar6000/wireless_ext.c
+++ b/drivers/ar6000/ar6000/wireless_ext.c
@@ -976,6 +976,16 @@ static int ar6000_ioctl_giwpower(struct net_device *dev,
 {
 	AR_SOFTC_T *ar = (AR_SOFTC_T *)netdev_priv(dev);
 
+	/*
+	 * FIXME:
+	 * https://docs.openmoko.org/trac/ticket/2267
+	 * When starting wpa_supplicant the kernel oopses.
+	 * The following condition avoids the oops.
+	 * Remove this comment to bless this solution.
+	 */
+	if (ar->arWlanState == WLAN_DISABLED || ar->arWmiReady == FALSE)
+		return -EIO;
+
 	return wmi_get_power_mode_cmd(ar->arWmi);
 }