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| author | Rafał Miłecki <zajec5@gmail.com> | 2010-12-07 09:42:07 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-12-08 15:38:44 -0500 |
| commit | 155180803c95c7b14b355f60431bef45116c151e (patch) | |
| tree | 5b02de749bb879e1ad488c2c6fd53884044b72f8 /drivers/net | |
| parent | 755fd183b89bc8a302669b6f35cd98faee473f7a (diff) | |
| download | linux-155180803c95c7b14b355f60431bef45116c151e.tar.gz linux-155180803c95c7b14b355f60431bef45116c151e.tar.bz2 linux-155180803c95c7b14b355f60431bef45116c151e.zip | |
b43: flush PHY writes when needed
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/b43/phy_common.c | 5 | ||||
| -rw-r--r-- | drivers/net/wireless/b43/phy_common.h | 6 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/wireless/b43/phy_common.c b/drivers/net/wireless/b43/phy_common.c index fa7f83fc8db9..0a91fc3a2e03 100644 --- a/drivers/net/wireless/b43/phy_common.c +++ b/drivers/net/wireless/b43/phy_common.c @@ -231,6 +231,7 @@ void b43_radio_maskset(struct b43_wldev *dev, u16 offset, u16 mask, u16 set) u16 b43_phy_read(struct b43_wldev *dev, u16 reg) { assert_mac_suspended(dev); + dev->phy.writes_counter = 0; return dev->phy.ops->phy_read(dev, reg); } @@ -238,6 +239,10 @@ void b43_phy_write(struct b43_wldev *dev, u16 reg, u16 value) { assert_mac_suspended(dev); dev->phy.ops->phy_write(dev, reg, value); + if (++dev->phy.writes_counter == B43_MAX_WRITES_IN_ROW) { + b43_read16(dev, B43_MMIO_PHY_VER); + dev->phy.writes_counter = 0; + } } void b43_phy_copy(struct b43_wldev *dev, u16 destreg, u16 srcreg) diff --git a/drivers/net/wireless/b43/phy_common.h b/drivers/net/wireless/b43/phy_common.h index 0e6194228845..2ed60e5484b6 100644 --- a/drivers/net/wireless/b43/phy_common.h +++ b/drivers/net/wireless/b43/phy_common.h @@ -39,6 +39,9 @@ struct b43_c32 { s32 i, q; }; #define B43_PHYVER_TYPE_SHIFT 8 #define B43_PHYVER_VERSION 0x00FF +/* PHY writes need to be flushed if we reach limit */ +#define B43_MAX_WRITES_IN_ROW 24 + /** * enum b43_interference_mitigation - Interference Mitigation mode * @@ -232,6 +235,9 @@ struct b43_phy { /* PHY revision number. */ u8 rev; + /* Count writes since last read */ + u8 writes_counter; + /* Radio versioning */ u16 radio_manuf; /* Radio manufacturer */ u16 radio_ver; /* Radio version */ |