提交 b7a08b28 编写于 作者: J Johannes Berg 提交者: Luca Coelho

iwlwifi: pcie: extend device reset delay

Newer hardware generations will take longer to be accessible again
after reset, so we need to wait longer before continuing any flow
that did a reset.

Rather than make the wait time configurable, simply extend it for
all.

Since all of these code paths can sleep, use usleep_range() rather
than mdelay().
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NLuca Coelho <luciano.coelho@intel.com>
上级 fbbd4859
......@@ -360,8 +360,7 @@ static void iwl_pcie_apm_lp_xtal_enable(struct iwl_trans *trans)
/* Reset entire device - do controller reset (results in SHRD_HW_RST) */
iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
udelay(10);
usleep_range(1000, 2000);
/*
* Set "initialization complete" bit to move adapter from
......@@ -407,8 +406,7 @@ static void iwl_pcie_apm_lp_xtal_enable(struct iwl_trans *trans)
* SHRD_HW_RST). Turn MAC off before proceeding.
*/
iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
udelay(10);
usleep_range(1000, 2000);
/* Enable LP XTAL by indirect access through CSR */
apmg_gp1_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_GP1_REG);
......@@ -505,8 +503,7 @@ static void iwl_pcie_apm_stop(struct iwl_trans *trans, bool op_mode_leave)
/* Reset the entire device */
iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
udelay(10);
usleep_range(1000, 2000);
/*
* Clear "initialization complete" bit to move adapter from
......@@ -1073,7 +1070,7 @@ static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
/* stop and reset the on-board processor */
iwl_write32(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
udelay(20);
usleep_range(1000, 2000);
/*
* Upon stop, the APM issues an interrupt if HW RF kill is set.
......@@ -1525,8 +1522,7 @@ static int _iwl_trans_pcie_start_hw(struct iwl_trans *trans, bool low_power)
/* Reset the entire device */
iwl_write32(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
usleep_range(10, 15);
usleep_range(1000, 2000);
iwl_pcie_apm_init(trans);
......
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