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Date: Sun, 31 May 2009 23:44:54 -0700
From: Joe Perches <joe@...ches.com>
To: Jie Yang <jie.yang@...eros.com>
Cc: netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
Yang Hongyang <yanghy@...fujitsu.com>,
Andrew Morton <akpm@...ux-foundation.org>
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 <joe@...ches.com>
diff --git a/drivers/net/atl1c/atl1c_main.c b/drivers/net/atl1c/atl1c_main.c
index fc1092b..5d2c8f7 100644
--- a/drivers/net/atl1c/atl1c_main.c
+++ b/drivers/net/atl1c/atl1c_main.c
@@ -164,6 +164,24 @@ static inline void atl1c_irq_reset(struct atl1c_adapter *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;
}
--
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