90 lines
3.2 KiB
Diff
90 lines
3.2 KiB
Diff
--- a/drivers/net/wireless/ath/ath5k/desc.c
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+++ b/drivers/net/wireless/ath/ath5k/desc.c
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@@ -401,32 +401,38 @@ static int ath5k_hw_proc_4word_tx_status
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{
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struct ath5k_hw_4w_tx_ctl *tx_ctl;
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struct ath5k_hw_tx_status *tx_status;
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+ u32 txstat0, txstat1, txctl2;
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tx_ctl = &desc->ud.ds_tx5212.tx_ctl;
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tx_status = &desc->ud.ds_tx5212.tx_stat;
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+ txstat1 = ACCESS_ONCE(tx_status->tx_status_1);
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+
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/* No frame has been send or error */
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- if (unlikely(!(tx_status->tx_status_1 & AR5K_DESC_TX_STATUS1_DONE)))
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+ if (unlikely(!(txstat1 & AR5K_DESC_TX_STATUS1_DONE)))
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return -EINPROGRESS;
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+ txstat0 = ACCESS_ONCE(tx_status->tx_status_0);
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+ txctl2 = ACCESS_ONCE(tx_ctl->tx_control_2);
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+
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/*
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* Get descriptor status
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*/
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- ts->ts_tstamp = AR5K_REG_MS(tx_status->tx_status_0,
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+ ts->ts_tstamp = AR5K_REG_MS(txstat0,
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AR5K_DESC_TX_STATUS0_SEND_TIMESTAMP);
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- ts->ts_shortretry = AR5K_REG_MS(tx_status->tx_status_0,
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+ ts->ts_shortretry = AR5K_REG_MS(txstat0,
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AR5K_DESC_TX_STATUS0_SHORT_RETRY_COUNT);
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- ts->ts_longretry = AR5K_REG_MS(tx_status->tx_status_0,
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+ ts->ts_longretry = AR5K_REG_MS(txstat0,
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AR5K_DESC_TX_STATUS0_LONG_RETRY_COUNT);
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- ts->ts_seqnum = AR5K_REG_MS(tx_status->tx_status_1,
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+ ts->ts_seqnum = AR5K_REG_MS(txstat1,
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AR5K_DESC_TX_STATUS1_SEQ_NUM);
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- ts->ts_rssi = AR5K_REG_MS(tx_status->tx_status_1,
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+ ts->ts_rssi = AR5K_REG_MS(txstat1,
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AR5K_DESC_TX_STATUS1_ACK_SIG_STRENGTH);
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- ts->ts_antenna = (tx_status->tx_status_1 &
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+ ts->ts_antenna = (txstat1 &
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AR5K_DESC_TX_STATUS1_XMIT_ANTENNA_5212) ? 2 : 1;
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ts->ts_status = 0;
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- ts->ts_final_idx = AR5K_REG_MS(tx_status->tx_status_1,
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+ ts->ts_final_idx = AR5K_REG_MS(txstat1,
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AR5K_DESC_TX_STATUS1_FINAL_TS_IX_5212);
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/* The longretry counter has the number of un-acked retries
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@@ -437,17 +443,17 @@ static int ath5k_hw_proc_4word_tx_status
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ts->ts_retry[ts->ts_final_idx] = ts->ts_longretry;
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switch (ts->ts_final_idx) {
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case 3:
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- ts->ts_retry[2] = AR5K_REG_MS(tx_ctl->tx_control_2,
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+ ts->ts_retry[2] = AR5K_REG_MS(txctl2,
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AR5K_4W_TX_DESC_CTL2_XMIT_TRIES2);
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ts->ts_longretry += ts->ts_retry[2];
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/* fall through */
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case 2:
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- ts->ts_retry[1] = AR5K_REG_MS(tx_ctl->tx_control_2,
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+ ts->ts_retry[1] = AR5K_REG_MS(txctl2,
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AR5K_4W_TX_DESC_CTL2_XMIT_TRIES1);
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ts->ts_longretry += ts->ts_retry[1];
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/* fall through */
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case 1:
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- ts->ts_retry[0] = AR5K_REG_MS(tx_ctl->tx_control_2,
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+ ts->ts_retry[0] = AR5K_REG_MS(txctl2,
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AR5K_4W_TX_DESC_CTL2_XMIT_TRIES1);
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ts->ts_longretry += ts->ts_retry[0];
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/* fall through */
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@@ -456,15 +462,14 @@ static int ath5k_hw_proc_4word_tx_status
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}
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/* TX error */
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- if (!(tx_status->tx_status_0 & AR5K_DESC_TX_STATUS0_FRAME_XMIT_OK)) {
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- if (tx_status->tx_status_0 &
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- AR5K_DESC_TX_STATUS0_EXCESSIVE_RETRIES)
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+ if (!(txstat0 & AR5K_DESC_TX_STATUS0_FRAME_XMIT_OK)) {
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+ if (txstat0 & AR5K_DESC_TX_STATUS0_EXCESSIVE_RETRIES)
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ts->ts_status |= AR5K_TXERR_XRETRY;
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- if (tx_status->tx_status_0 & AR5K_DESC_TX_STATUS0_FIFO_UNDERRUN)
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+ if (txstat0 & AR5K_DESC_TX_STATUS0_FIFO_UNDERRUN)
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ts->ts_status |= AR5K_TXERR_FIFO;
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- if (tx_status->tx_status_0 & AR5K_DESC_TX_STATUS0_FILTERED)
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+ if (txstat0 & AR5K_DESC_TX_STATUS0_FILTERED)
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ts->ts_status |= AR5K_TXERR_FILT;
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}
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