Commit c70762f9 authored by Alban Browaeys's avatar Alban Browaeys Committed by John W. Linville

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: default avatarAlban Browaeys <prahal@yahoo.com>
Acked-by: default avatarGertjan van Wingerde <gwingerde@gmail.com>
Acked-by: default avatarIvo van Doorn <ivdoorn@gmail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 050e8a47
...@@ -41,6 +41,9 @@ int rt2x00pci_regbusy_read(struct rt2x00_dev *rt2x00dev, ...@@ -41,6 +41,9 @@ int rt2x00pci_regbusy_read(struct rt2x00_dev *rt2x00dev,
{ {
unsigned int i; unsigned int i;
if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
return 0;
for (i = 0; i < REGISTER_BUSY_COUNT; i++) { for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2x00pci_register_read(rt2x00dev, offset, reg); rt2x00pci_register_read(rt2x00dev, offset, reg);
if (!rt2x00_get_field32(*reg, field)) if (!rt2x00_get_field32(*reg, field))
......
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