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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-12-13 16:35:09 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-12-13 16:35:09 +0000 |
| commit | bc7ecbcbc2c0ff235382077b55de7896775afc16 (patch) | |
| tree | 9918b2f3fdeebd9c99a308af94d86bc13c80d0c8 /drivers/net/wireless/b43/rfkill.c | |
| parent | c52854018ad123c9ef83867462457b75bb56d452 (diff) | |
| parent | 285eae0a4ba0f467341476fd4c6981e5cdafc6be (diff) | |
Merge branch 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel
Diffstat (limited to 'drivers/net/wireless/b43/rfkill.c')
| -rw-r--r-- | drivers/net/wireless/b43/rfkill.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/net/wireless/b43/rfkill.c b/drivers/net/wireless/b43/rfkill.c index ffdce6f3c909..78016ae21c50 100644 --- a/drivers/net/wireless/b43/rfkill.c +++ b/drivers/net/wireless/b43/rfkill.c @@ -33,8 +33,14 @@ bool b43_is_hw_radio_enabled(struct b43_wldev *dev) & B43_MMIO_RADIO_HWENABLED_HI_MASK)) return 1; } else { - if (b43_status(dev) >= B43_STAT_STARTED && - b43_read16(dev, B43_MMIO_RADIO_HWENABLED_LO) + /* 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 (b43_status(dev) < B43_STAT_STARTED) + return 1; + if (b43_read16(dev, B43_MMIO_RADIO_HWENABLED_LO) & B43_MMIO_RADIO_HWENABLED_LO_MASK) return 1; } |