From c930a66220bac0815cca74eef94ada221377ffba Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Sun, 31 May 2009 20:44:54 +0000 Subject: [PATCH] atl1c_main.c: add wait_for_idle routine Slight refactoring of duplicated wait for idle checks Spelling fix Signed-off-by: Joe Perches Acked-by: jie.yang@atheros.com Signed-off-by: David S. Miller --- drivers/net/atl1c/atl1c_main.c | 48 ++++++++++++++++------------------ 1 file changed, 23 insertions(+), 25 deletions(-) diff --git a/drivers/net/atl1c/atl1c_main.c b/drivers/net/atl1c/atl1c_main.c index ac76136d70f9..cd547a205fb9 100644 --- a/drivers/net/atl1c/atl1c_main.c +++ b/drivers/net/atl1c/atl1c_main.c @@ -163,6 +163,24 @@ static inline void atl1c_irq_reset(struct atl1c_adapter *adapter) atl1c_irq_enable(adapter); } +/* + * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads + * of the idle status register until the device is actually idle + */ +static u32 atl1c_wait_until_idle(struct atl1c_hw *hw) +{ + int timeout; + u32 data; + + for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) { + AT_READ_REG(hw, REG_IDLE_STATUS, &data); + if ((data & IDLE_STATUS_MASK) == 0) + return 0; + msleep(1); + } + return data; +} + /* * atl1c_phy_config - Timer Call-back * @data: pointer to netdev cast into an unsigned long @@ -1106,7 +1124,6 @@ static void atl1c_configure_dma(struct atl1c_adapter *adapter) static int atl1c_stop_mac(struct atl1c_hw *hw) { u32 data; - int timeout; AT_READ_REG(hw, REG_RXQ_CTRL, &data); data &= ~(RXQ1_CTRL_EN | RXQ2_CTRL_EN | @@ -1117,25 +1134,13 @@ static int atl1c_stop_mac(struct atl1c_hw *hw) data &= ~TXQ_CTRL_EN; AT_WRITE_REG(hw, REG_TWSI_CTRL, data); - for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) { - AT_READ_REG(hw, REG_IDLE_STATUS, &data); - if ((data & (IDLE_STATUS_RXQ_NO_IDLE | - IDLE_STATUS_TXQ_NO_IDLE)) == 0) - break; - msleep(1); - } + atl1c_wait_until_idle(hw); AT_READ_REG(hw, REG_MAC_CTRL, &data); data &= ~(MAC_CTRL_TX_EN | MAC_CTRL_RX_EN); AT_WRITE_REG(hw, REG_MAC_CTRL, data); - for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) { - AT_READ_REG(hw, REG_IDLE_STATUS, &data); - if ((data & IDLE_STATUS_MASK) == 0) - return 0; - msleep(1); - } - return data; + return (int)atl1c_wait_until_idle(hw); } static void atl1c_enable_rx_ctrl(struct atl1c_hw *hw) @@ -1178,8 +1183,6 @@ static int atl1c_reset_mac(struct atl1c_hw *hw) { struct atl1c_adapter *adapter = (struct atl1c_adapter *)hw->adapter; struct pci_dev *pdev = adapter->pdev; - u32 idle_status_data = 0; - int timeout = 0; int ret; AT_WRITE_REG(hw, REG_IMR, 0); @@ -1198,15 +1201,10 @@ static int atl1c_reset_mac(struct atl1c_hw *hw) AT_WRITE_FLUSH(hw); msleep(10); /* Wait at least 10ms for All module to be Idle */ - for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) { - AT_READ_REG(hw, REG_IDLE_STATUS, &idle_status_data); - if ((idle_status_data & IDLE_STATUS_MASK) == 0) - break; - msleep(1); - } - if (timeout >= AT_HW_MAX_IDLE_DELAY) { + + if (atl1c_wait_until_idle(hw)) { dev_err(&pdev->dev, - "MAC state machine cann't be idle since" + "MAC state machine can't be idle since" " disabled for 10ms second\n"); return -1; } -- 2.20.1