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| author | Alban Browaeys <prahal@yahoo.com> | 2009-12-04 23:46:57 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-12-21 18:56:23 -0500 |
| commit | c70762f9acad654002704f1e53436a0ba3356c31 (patch) | |
| tree | 805a613a3bb7622d42176471b437ce600960039f /drivers/net/wireless/rt2x00/rt2x00pci.c | |
| parent | 050e8a47dc8b056c880f380ffd01055669f8fe68 (diff) | |
| download | linux-c70762f9acad654002704f1e53436a0ba3356c31.tar.gz linux-c70762f9acad654002704f1e53436a0ba3356c31.tar.bz2 linux-c70762f9acad654002704f1e53436a0ba3356c31.zip | |
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>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00pci.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00pci.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c index 0feb4d0e4668..801be436cf1d 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)) |