diff options
Diffstat (limited to 'drivers/net/wireless/ath9k/mac.c')
| -rw-r--r-- | drivers/net/wireless/ath9k/mac.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/drivers/net/wireless/ath9k/mac.c b/drivers/net/wireless/ath9k/mac.c index f32c622db6e..a6c204283ad 100644 --- a/drivers/net/wireless/ath9k/mac.c +++ b/drivers/net/wireless/ath9k/mac.c @@ -886,7 +886,8 @@ bool ath9k_hw_setrxabort(struct ath_hw *ah, bool set) REG_SET_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT)); - if (!ath9k_hw_wait(ah, AR_OBS_BUS_1, AR_OBS_BUS_1_RX_STATE, 0)) { + if (!ath9k_hw_wait(ah, AR_OBS_BUS_1, AR_OBS_BUS_1_RX_STATE, + 0, AH_WAIT_TIMEOUT)) { REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT)); @@ -933,15 +934,32 @@ void ath9k_hw_stoppcurecv(struct ath_hw *ah) bool ath9k_hw_stopdmarecv(struct ath_hw *ah) { +#define AH_RX_STOP_DMA_TIMEOUT 10000 /* usec */ +#define AH_RX_TIME_QUANTUM 100 /* usec */ + + int i; + REG_WRITE(ah, AR_CR, AR_CR_RXD); - if (!ath9k_hw_wait(ah, AR_CR, AR_CR_RXE, 0)) { + /* Wait for rx enable bit to go low */ + for (i = AH_RX_STOP_DMA_TIMEOUT / AH_TIME_QUANTUM; i != 0; i--) { + if ((REG_READ(ah, AR_CR) & AR_CR_RXE) == 0) + break; + udelay(AH_TIME_QUANTUM); + } + + if (i == 0) { DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, - "dma failed to stop in 10ms\n" - "AR_CR=0x%08x\nAR_DIAG_SW=0x%08x\n", - REG_READ(ah, AR_CR), REG_READ(ah, AR_DIAG_SW)); + "dma failed to stop in %d ms " + "AR_CR=0x%08x AR_DIAG_SW=0x%08x\n", + AH_RX_STOP_DMA_TIMEOUT / 1000, + REG_READ(ah, AR_CR), + REG_READ(ah, AR_DIAG_SW)); return false; } else { return true; } + +#undef AH_RX_TIME_QUANTUM +#undef AH_RX_STOP_DMA_TIMEOUT } |