diff options
| author | Michael Buesch <mb@bu3sch.de> | 2008-01-09 20:15:31 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 15:10:42 -0800 |
| commit | bfe6a50156ab0c33729378fae7038bce3c6c5184 (patch) | |
| tree | 4d29fdaa77eef7772eadab31033227e49e67c911 /drivers/net/wireless/b43legacy/radio.c | |
| parent | a8bdf29c6cd117644d27677962fe832b33036c77 (diff) | |
| download | kernel_samsung_smdk4412-bfe6a50156ab0c33729378fae7038bce3c6c5184.zip kernel_samsung_smdk4412-bfe6a50156ab0c33729378fae7038bce3c6c5184.tar.gz kernel_samsung_smdk4412-bfe6a50156ab0c33729378fae7038bce3c6c5184.tar.bz2 | |
b43legacy: Remove the PHY spinlock
This fixes a sparse warning about weird locking.
The spinlock is not needed, so simply remove it.
This also adds some sanity checks to the PHY and radio locking
to protect against recursive locking.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/b43legacy/radio.c')
| -rw-r--r-- | drivers/net/wireless/b43legacy/radio.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/wireless/b43legacy/radio.c b/drivers/net/wireless/b43legacy/radio.c index 1a72eb0..318a270 100644 --- a/drivers/net/wireless/b43legacy/radio.c +++ b/drivers/net/wireless/b43legacy/radio.c @@ -92,6 +92,7 @@ void b43legacy_radio_lock(struct b43legacy_wldev *dev) u32 status; status = b43legacy_read32(dev, B43legacy_MMIO_STATUS_BITFIELD); + B43legacy_WARN_ON(status & B43legacy_SBF_RADIOREG_LOCK); status |= B43legacy_SBF_RADIOREG_LOCK; b43legacy_write32(dev, B43legacy_MMIO_STATUS_BITFIELD, status); mmiowb(); @@ -104,6 +105,7 @@ void b43legacy_radio_unlock(struct b43legacy_wldev *dev) b43legacy_read16(dev, B43legacy_MMIO_PHY_VER); /* dummy read */ status = b43legacy_read32(dev, B43legacy_MMIO_STATUS_BITFIELD); + B43legacy_WARN_ON(!(status & B43legacy_SBF_RADIOREG_LOCK)); status &= ~B43legacy_SBF_RADIOREG_LOCK; b43legacy_write32(dev, B43legacy_MMIO_STATUS_BITFIELD, status); mmiowb(); @@ -284,12 +286,11 @@ u8 b43legacy_radio_aci_scan(struct b43legacy_wldev *dev) unsigned int j; unsigned int start; unsigned int end; - unsigned long phylock_flags; if (!((phy->type == B43legacy_PHYTYPE_G) && (phy->rev > 0))) return 0; - b43legacy_phy_lock(dev, phylock_flags); + b43legacy_phy_lock(dev); b43legacy_radio_lock(dev); b43legacy_phy_write(dev, 0x0802, b43legacy_phy_read(dev, 0x0802) & 0xFFFC); @@ -323,7 +324,7 @@ u8 b43legacy_radio_aci_scan(struct b43legacy_wldev *dev) ret[j] = 1; } b43legacy_radio_unlock(dev); - b43legacy_phy_unlock(dev, phylock_flags); + b43legacy_phy_unlock(dev); return ret[channel - 1]; } |