diff options
| author | Shahar S Matityahu <shahar.s.matityahu@intel.com> | 2019-05-16 10:31:17 +0300 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2019-06-29 10:09:41 +0300 |
| commit | fc838c775f35e272e5cc7ef43853f0b55babbe37 (patch) | |
| tree | 564679754385a1d875efa7bc621412b31b3776ec /drivers/net/wireless/intel | |
| parent | c4d3f2ee66a8dd5e2f5876488a1fa876484617ca (diff) | |
| download | linux-fc838c775f35e272e5cc7ef43853f0b55babbe37.tar.bz2 | |
iwlwifi: dbg: fix debug monitor stop and restart delays
The driver should delay only in recording stop flow between writing to
DBGC_IN_SAMPLE register and DBGC_OUT_CTRL register. Any other delay is
not needed.
Change the following:
1. Remove any unnecessary delays in the flow
2. Increase the delay in the stop recording flow since 100 micro is
not enough
3. Use usleep_range instead of delay since the driver is allowed to
sleep in this flow.
Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Fixes: 5cfe79c8d92a ("iwlwifi: fw: stop and start debugging using host command")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/dbg.h | 6 |
2 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c index b4c1599e032e..33a4bb56a39f 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c @@ -2386,8 +2386,6 @@ static void iwl_fw_dbg_collect_sync(struct iwl_fw_runtime *fwrt, u8 wk_idx) /* start recording again if the firmware is not crashed */ if (!test_bit(STATUS_FW_ERROR, &fwrt->trans->status) && fwrt->fw->dbg.dest_tlv) { - /* wait before we collect the data till the DBGC stop */ - udelay(500); iwl_fw_dbg_restart_recording(fwrt, ¶ms); } diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.h b/drivers/net/wireless/intel/iwlwifi/fw/dbg.h index 64f834a9134c..d7a285874973 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.h @@ -295,7 +295,10 @@ _iwl_fw_dbg_stop_recording(struct iwl_trans *trans, } iwl_write_umac_prph(trans, DBGC_IN_SAMPLE, 0); - udelay(100); + /* wait for the DBGC to finish writing the internal buffer to DRAM to + * avoid halting the HW while writing + */ + usleep_range(700, 1000); iwl_write_umac_prph(trans, DBGC_OUT_CTRL, 0); #ifdef CONFIG_IWLWIFI_DEBUGFS trans->dbg_rec_on = false; @@ -325,7 +328,6 @@ _iwl_fw_dbg_restart_recording(struct iwl_trans *trans, iwl_set_bits_prph(trans, MON_BUFF_SAMPLE_CTL, 0x1); } else { iwl_write_umac_prph(trans, DBGC_IN_SAMPLE, params->in_sample); - udelay(100); iwl_write_umac_prph(trans, DBGC_OUT_CTRL, params->out_ctrl); } } |