e1000e: convert short duration msleep() to usleep_range()

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@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

7 files changed, 33 insertions, 35 deletions

diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c
index 89a69035e538..9fedbca66dfd 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 2fefa820302b..0279695b6942 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 07f09e96e453..5b4cf9076bac 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 ce1dbfdca112..06ff884bc2c7 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 96921de5df2e..30ef8fa4968c 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 506a0a0043b3..909c8de58c15 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 6ae31fcfb629..484774c13c21 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);
 }
 
 /**