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[14/17] rt2x00: Fix rt73usb rfkill polling prior to interface start.

Message ID 1346360670-6498-9-git-send-email-gwingerde@gmail.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Gertjan van Wingerde Aug. 30, 2012, 9:04 p.m. UTC 
We need to program the rfkill switch GPIO pin direction to input at
device initialization time, not only when the interface is brought up.
Doing this only when the interface is brought up could lead to rfkill
detecting the switch is turned on erroneously and inability to create
the interface and bringing it up.

Reported-and-tested-by: Andreas Messer <andi@bastelmap.de>
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Cc: <stable@vger.kernel.org>
diff mbox

Patch

diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index d5b6fb8..cfa9f37 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -2177,6 +2177,7 @@  static int rt73usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 static int rt73usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 {
 	int retval;
+	u32 reg;
 
 	/*
 	 * Allocate eeprom data.
@@ -2190,6 +2191,14 @@  static int rt73usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 		return retval;
 
 	/*
+	 * Enable rfkill polling by setting GPIO direction of the
+	 * rfkill switch GPIO pin correctly.
+	 */
+	rt2x00usb_register_read(rt2x00dev, MAC_CSR13, &reg);
+	rt2x00_set_field32(&reg, MAC_CSR13_DIR7, 0);
+	rt2x00usb_register_write(rt2x00dev, MAC_CSR13, reg);
+
+	/*
 	 * Initialize hw specifications.
 	 */
 	retval = rt73usb_probe_hw_mode(rt2x00dev);