From: Bruce Allan Date: Sat, 19 Mar 2011 00:27:20 +0000 (+0000) Subject: e1000e: convert short duration msleep() to usleep_range() X-Git-Tag: v3.0-rc1~377^2~422 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1bba4386ab4f67a53c9649268dd9c83bc6110a9b;p=profile%2Fivi%2Fkernel-x86-ivi.git 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 Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- 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 96921de5..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); } /**