diff options
Diffstat (limited to 'drivers/net/wireless/b43legacy/rfkill.c')
| -rw-r--r-- | drivers/net/wireless/b43legacy/rfkill.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/wireless/b43legacy/rfkill.c b/drivers/net/wireless/b43legacy/rfkill.c index 8783022db11e..d579df72b783 100644 --- a/drivers/net/wireless/b43legacy/rfkill.c +++ b/drivers/net/wireless/b43legacy/rfkill.c @@ -34,6 +34,13 @@ bool b43legacy_is_hw_radio_enabled(struct b43legacy_wldev *dev) & B43legacy_MMIO_RADIO_HWENABLED_HI_MASK)) return 1; } else { + /* To prevent CPU fault on PPC, do not read a register + * unless the interface is started; however, on resume + * for hibernation, this routine is entered early. When + * that happens, unconditionally return TRUE. + */ + if (b43legacy_status(dev) < B43legacy_STAT_STARTED) + return 1; if (b43legacy_read16(dev, B43legacy_MMIO_RADIO_HWENABLED_LO) & B43legacy_MMIO_RADIO_HWENABLED_LO_MASK) return 1; |