Commit c70762f9 authored Dec 04, 2009 by Alban Browaeys Committed by John W. Linville Dec 21, 2009

rt2x00 : bail out of regbusy_read if device is removed.



platform rfkill is async thus we may try to read while the device is
already off.

Signed-off-by: Alban Browaeys <prahal@yahoo.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <ivdoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent 050e8a47

drivers/net/wireless/rt2x00/rt2x00pci.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -41,6 +41,9 @@ int rt2x00pci_regbusy_read(struct rt2x00_dev *rt2x00dev,
		{
		unsigned int i;

		if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
		return 0;

		for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
		rt2x00pci_register_read(rt2x00dev, offset, reg);
		if (!rt2x00_get_field32(*reg, field))