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Date: Wed, 13 Apr 2011 18:02:01 -0700
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net
Cc: Bruce Allan <bruce.w.allan@...el.com>, netdev@...r.kernel.org,
gospo@...hat.com, bphilips@...ell.com,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next-2.6 05/24] e1000e: convert short duration msleep() to usleep_range()
From: Bruce Allan <bruce.w.allan@...el.com>
With durations less than 20ms, the jiffies or legacy timer backed msleep()
may sleep ~20ms which might not be what the caller expects. Instead, it
is recommended to use the hrtimers backed usleep_range(). For more, see
Documentation/timers/timers-howto.txt. Issues reported by checkpatch.
In addition, remove unnecessary sleep in e1000e_write_nvm_spi().
Signed-off-by: Bruce Allan <bruce.w.allan@...el.com>
Tested-by: Aaron Brown <aaron.f.brown@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/e1000e/82571.c | 10 +++++-----
drivers/net/e1000e/es2lan.c | 4 ++--
drivers/net/e1000e/ethtool.c | 20 ++++++++++----------
drivers/net/e1000e/ich8lan.c | 12 ++++++------
drivers/net/e1000e/lib.c | 10 ++++------
drivers/net/e1000e/netdev.c | 8 ++++----
drivers/net/e1000e/phy.c | 4 ++--
7 files changed, 33 insertions(+), 35 deletions(-)
diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c
index 89a6903..9fedbca 100644
--- a/drivers/net/e1000e/82571.c
+++ b/drivers/net/e1000e/82571.c
@@ -594,7 +594,7 @@ static s32 e1000_get_hw_semaphore_82573(struct e1000_hw *hw)
extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
- msleep(2);
+ usleep_range(2000, 4000);
i++;
} while (i < MDIO_OWNERSHIP_TIMEOUT);
@@ -816,7 +816,7 @@ static s32 e1000_update_nvm_checksum_82571(struct e1000_hw *hw)
/* Check for pending operations. */
for (i = 0; i < E1000_FLASH_UPDATES; i++) {
- msleep(1);
+ usleep_range(1000, 2000);
if ((er32(EECD) & E1000_EECD_FLUPD) == 0)
break;
}
@@ -840,7 +840,7 @@ static s32 e1000_update_nvm_checksum_82571(struct e1000_hw *hw)
ew32(EECD, eecd);
for (i = 0; i < E1000_FLASH_UPDATES; i++) {
- msleep(1);
+ usleep_range(1000, 2000);
if ((er32(EECD) & E1000_EECD_FLUPD) == 0)
break;
}
@@ -930,7 +930,7 @@ static s32 e1000_get_cfg_done_82571(struct e1000_hw *hw)
if (er32(EEMNGCTL) &
E1000_NVM_CFG_DONE_PORT_0)
break;
- msleep(1);
+ usleep_range(1000, 2000);
timeout--;
}
if (!timeout) {
@@ -1037,7 +1037,7 @@ static s32 e1000_reset_hw_82571(struct e1000_hw *hw)
ew32(TCTL, E1000_TCTL_PSP);
e1e_flush();
- msleep(10);
+ usleep_range(10000, 20000);
/*
* Must acquire the MDIO ownership before MAC reset.
diff --git a/drivers/net/e1000e/es2lan.c b/drivers/net/e1000e/es2lan.c
index 2fefa82..0279695 100644
--- a/drivers/net/e1000e/es2lan.c
+++ b/drivers/net/e1000e/es2lan.c
@@ -612,7 +612,7 @@ static s32 e1000_get_cfg_done_80003es2lan(struct e1000_hw *hw)
while (timeout) {
if (er32(EEMNGCTL) & mask)
break;
- msleep(1);
+ usleep_range(1000, 2000);
timeout--;
}
if (!timeout) {
@@ -802,7 +802,7 @@ static s32 e1000_reset_hw_80003es2lan(struct e1000_hw *hw)
ew32(TCTL, E1000_TCTL_PSP);
e1e_flush();
- msleep(10);
+ usleep_range(10000, 20000);
ctrl = er32(CTRL);
diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c
index 07f09e9..5b4cf90 100644
--- a/drivers/net/e1000e/ethtool.c
+++ b/drivers/net/e1000e/ethtool.c
@@ -253,7 +253,7 @@ static int e1000_set_settings(struct net_device *netdev,
}
while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
- msleep(1);
+ usleep_range(1000, 2000);
if (ecmd->autoneg == AUTONEG_ENABLE) {
hw->mac.autoneg = 1;
@@ -317,7 +317,7 @@ static int e1000_set_pauseparam(struct net_device *netdev,
adapter->fc_autoneg = pause->autoneg;
while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
- msleep(1);
+ usleep_range(1000, 2000);
if (adapter->fc_autoneg == AUTONEG_ENABLE) {
hw->fc.requested_mode = e1000_fc_default;
@@ -673,7 +673,7 @@ static int e1000_set_ringparam(struct net_device *netdev,
return -EINVAL;
while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
- msleep(1);
+ usleep_range(1000, 2000);
if (netif_running(adapter->netdev))
e1000e_down(adapter);
@@ -952,7 +952,7 @@ static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
/* Disable all the interrupts */
ew32(IMC, 0xFFFFFFFF);
- msleep(10);
+ usleep_range(10000, 20000);
/* Test each interrupt */
for (i = 0; i < 10; i++) {
@@ -984,7 +984,7 @@ static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
adapter->test_icr = 0;
ew32(IMC, mask);
ew32(ICS, mask);
- msleep(10);
+ usleep_range(10000, 20000);
if (adapter->test_icr & mask) {
*data = 3;
@@ -1002,7 +1002,7 @@ static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
adapter->test_icr = 0;
ew32(IMS, mask);
ew32(ICS, mask);
- msleep(10);
+ usleep_range(10000, 20000);
if (!(adapter->test_icr & mask)) {
*data = 4;
@@ -1020,7 +1020,7 @@ static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
adapter->test_icr = 0;
ew32(IMC, ~mask & 0x00007FFF);
ew32(ICS, ~mask & 0x00007FFF);
- msleep(10);
+ usleep_range(10000, 20000);
if (adapter->test_icr) {
*data = 5;
@@ -1031,7 +1031,7 @@ static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
/* Disable all the interrupts */
ew32(IMC, 0xFFFFFFFF);
- msleep(10);
+ usleep_range(10000, 20000);
/* Unhook test interrupt handler */
free_irq(irq, netdev);
@@ -1406,7 +1406,7 @@ static int e1000_set_82571_fiber_loopback(struct e1000_adapter *adapter)
*/
#define E1000_SERDES_LB_ON 0x410
ew32(SCTL, E1000_SERDES_LB_ON);
- msleep(10);
+ usleep_range(10000, 20000);
return 0;
}
@@ -1501,7 +1501,7 @@ static void e1000_loopback_cleanup(struct e1000_adapter *adapter)
hw->phy.media_type == e1000_media_type_internal_serdes) {
#define E1000_SERDES_LB_OFF 0x400
ew32(SCTL, E1000_SERDES_LB_OFF);
- msleep(10);
+ usleep_range(10000, 20000);
break;
}
/* Fall Through */
diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index ce1dbfd..06ff884 100644
--- a/drivers/net/e1000e/ich8lan.c
+++ b/drivers/net/e1000e/ich8lan.c
@@ -338,7 +338,7 @@ static s32 e1000_init_phy_params_pchlan(struct e1000_hw *hw)
/* Ungate automatic PHY configuration on non-managed 82579 */
if ((hw->mac.type == e1000_pch2lan) &&
!(fwsm & E1000_ICH_FWSM_FW_VALID)) {
- msleep(10);
+ usleep_range(10000, 20000);
e1000_gate_hw_phy_config_ich8lan(hw, false);
}
@@ -427,7 +427,7 @@ static s32 e1000_init_phy_params_ich8lan(struct e1000_hw *hw)
phy->id = 0;
while ((e1000_phy_unknown == e1000e_get_phy_type_from_id(phy->id)) &&
(i++ < 100)) {
- msleep(1);
+ usleep_range(1000, 2000);
ret_val = e1000e_get_phy_id(hw);
if (ret_val)
return ret_val;
@@ -1704,7 +1704,7 @@ static s32 e1000_post_phy_reset_ich8lan(struct e1000_hw *hw)
goto out;
/* Allow time for h/w to get to quiescent state after reset */
- msleep(10);
+ usleep_range(10000, 20000);
/* Perform any necessary post-reset workarounds */
switch (hw->mac.type) {
@@ -1737,7 +1737,7 @@ static s32 e1000_post_phy_reset_ich8lan(struct e1000_hw *hw)
if (hw->mac.type == e1000_pch2lan) {
/* Ungate automatic PHY configuration on non-managed 82579 */
if (!(er32(FWSM) & E1000_ICH_FWSM_FW_VALID)) {
- msleep(10);
+ usleep_range(10000, 20000);
e1000_gate_hw_phy_config_ich8lan(hw, false);
}
@@ -2532,7 +2532,7 @@ release:
*/
if (!ret_val) {
e1000e_reload_nvm(hw);
- msleep(10);
+ usleep_range(10000, 20000);
}
out:
@@ -3009,7 +3009,7 @@ static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw)
ew32(TCTL, E1000_TCTL_PSP);
e1e_flush();
- msleep(10);
+ usleep_range(10000, 20000);
/* Workaround for ICH8 bit corruption issue in FIFO memory */
if (hw->mac.type == e1000_ich8lan) {
diff --git a/drivers/net/e1000e/lib.c b/drivers/net/e1000e/lib.c
index 96921de..30ef8fa 100644
--- a/drivers/net/e1000e/lib.c
+++ b/drivers/net/e1000e/lib.c
@@ -868,7 +868,7 @@ static s32 e1000_poll_fiber_serdes_link_generic(struct e1000_hw *hw)
* milliseconds even if the other end is doing it in SW).
*/
for (i = 0; i < FIBER_LINK_UP_LIMIT; i++) {
- msleep(10);
+ usleep_range(10000, 20000);
status = er32(STATUS);
if (status & E1000_STATUS_LU)
break;
@@ -930,7 +930,7 @@ s32 e1000e_setup_fiber_serdes_link(struct e1000_hw *hw)
ew32(CTRL, ctrl);
e1e_flush();
- msleep(1);
+ usleep_range(1000, 2000);
/*
* For these adapters, the SW definable pin 1 is set when the optics
@@ -1385,7 +1385,7 @@ s32 e1000e_get_auto_rd_done(struct e1000_hw *hw)
while (i < AUTO_READ_DONE_TIMEOUT) {
if (er32(EECD) & E1000_EECD_AUTO_RD)
break;
- msleep(1);
+ usleep_range(1000, 2000);
i++;
}
@@ -2087,8 +2087,6 @@ s32 e1000e_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
if (ret_val)
return ret_val;
- msleep(10);
-
while (widx < words) {
u8 write_opcode = NVM_WRITE_OPCODE_SPI;
@@ -2132,7 +2130,7 @@ s32 e1000e_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
}
}
- msleep(10);
+ usleep_range(10000, 20000);
nvm->ops.release(hw);
return 0;
}
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 506a0a0..909c8de 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -2902,7 +2902,7 @@ static void e1000_configure_rx(struct e1000_adapter *adapter)
rctl = er32(RCTL);
ew32(RCTL, rctl & ~E1000_RCTL_EN);
e1e_flush();
- msleep(10);
+ usleep_range(10000, 20000);
if (adapter->flags2 & FLAG2_DMA_BURST) {
/*
@@ -3383,7 +3383,7 @@ void e1000e_down(struct e1000_adapter *adapter)
ew32(TCTL, tctl);
/* flush both disables and wait for them to finish */
e1e_flush();
- msleep(10);
+ usleep_range(10000, 20000);
napi_disable(&adapter->napi);
e1000_irq_disable(adapter);
@@ -3418,7 +3418,7 @@ void e1000e_reinit_locked(struct e1000_adapter *adapter)
{
might_sleep();
while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
- msleep(1);
+ usleep_range(1000, 2000);
e1000e_down(adapter);
e1000e_up(adapter);
clear_bit(__E1000_RESETTING, &adapter->state);
@@ -5028,7 +5028,7 @@ static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
}
while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
- msleep(1);
+ usleep_range(1000, 2000);
/* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
adapter->max_frame_size = max_frame;
e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
diff --git a/drivers/net/e1000e/phy.c b/drivers/net/e1000e/phy.c
index 6ae31fc..484774c 100644
--- a/drivers/net/e1000e/phy.c
+++ b/drivers/net/e1000e/phy.c
@@ -2372,7 +2372,7 @@ s32 e1000e_determine_phy_address(struct e1000_hw *hw)
ret_val = 0;
goto out;
}
- msleep(1);
+ usleep_range(1000, 2000);
i++;
} while (i < 10);
}
@@ -2740,7 +2740,7 @@ void e1000_power_down_phy_copper(struct e1000_hw *hw)
e1e_rphy(hw, PHY_CONTROL, &mii_reg);
mii_reg |= MII_CR_POWER_DOWN;
e1e_wphy(hw, PHY_CONTROL, mii_reg);
- msleep(1);
+ usleep_range(1000, 2000);
}
/**
--
1.7.4.2
--
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