From c70762f9acad654002704f1e53436a0ba3356c31 Mon Sep 17 00:00:00 2001 From: Alban Browaeys Date: Fri, 4 Dec 2009 23:46:57 +0100 Subject: 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 Acked-by: Gertjan van Wingerde Acked-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2x00pci.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net') diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c index 0feb4d0e466..801be436cf1 100644 --- a/drivers/net/wireless/rt2x00/rt2x00pci.c +++ b/drivers/net/wireless/rt2x00/rt2x00pci.c @@ -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)) -- cgit v1.2.3