diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2016-04-13 11:24:59 +0300 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2016-05-10 22:34:07 +0300 |
| commit | b7a08b284dcf7fb3d7b99473a87fabad04b2c548 (patch) | |
| tree | 947e01312ed774e92e3c6d03f75e19a0ce104691 /drivers/net/wireless | |
| parent | fbbd48595f2689619bab6957c6c2ee2895005b51 (diff) | |
| download | linux-b7a08b284dcf7fb3d7b99473a87fabad04b2c548.tar.xz | |
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: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c index edf9e23869c1..59fd17a75a2c 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c @@ -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); |