diff options
Diffstat (limited to 'drivers/net/wireless/iwlegacy/common.h')
| -rw-r--r-- | drivers/net/wireless/iwlegacy/common.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/net/wireless/iwlegacy/common.h b/drivers/net/wireless/iwlegacy/common.h index 1dfaa58acc4..df9b5b46283 100644 --- a/drivers/net/wireless/iwlegacy/common.h +++ b/drivers/net/wireless/iwlegacy/common.h @@ -2146,6 +2146,13 @@ static inline void _il_release_nic_access(struct il_priv *il) { _il_clear_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); + /* + * In above we are reading CSR_GP_CNTRL register, what will flush any + * previous writes, but still want write, which clear MAC_ACCESS_REQ + * bit, be performed on PCI bus before any other writes scheduled on + * different CPUs (after we drop reg_lock). + */ + mmiowb(); } static inline u32 @@ -2179,7 +2186,6 @@ static inline u32 _il_rd_prph(struct il_priv *il, u32 reg) { _il_wr(il, HBUS_TARG_PRPH_RADDR, reg | (3 << 24)); - rmb(); return _il_rd(il, HBUS_TARG_PRPH_RDAT); } @@ -2187,7 +2193,6 @@ static inline void _il_wr_prph(struct il_priv *il, u32 addr, u32 val) { _il_wr(il, HBUS_TARG_PRPH_WADDR, ((addr & 0x0000FFFF) | (3 << 24))); - wmb(); _il_wr(il, HBUS_TARG_PRPH_WDAT, val); } |