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[16/31] iwlwifi: mvm: don't write to DBGC_OUT_CTRL when stopping the recording

Message ID 1425238304-498-16-git-send-email-emmanuel.grumbach@intel.com
State Not Applicable
Delegated to: Johannes Berg
Headers show

Commit Message

Emmanuel Grumbach March 1, 2015, 7:31 p.m. UTC
From: Eran Harary <eran.harary@intel.com>

Due to HW bug in the DBGC when driver want to stop the dbg recording it
should wait 100us before collecting the data instead of write 0 to
DBGC_OUT_CTRL.

Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
---
 drivers/net/wireless/iwlwifi/mvm/fw.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/net/wireless/iwlwifi/mvm/fw.c b/drivers/net/wireless/iwlwifi/mvm/fw.c
index ca38e98..ab81124 100644
--- a/drivers/net/wireless/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/iwlwifi/mvm/fw.c
@@ -458,7 +458,8 @@  void iwl_mvm_fw_dbg_collect(struct iwl_mvm *mvm)
 		iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
 	} else {
 		iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
-		iwl_write_prph(mvm->trans, DBGC_OUT_CTRL, 0);
+		/* wait before we collect the data till the DBGC stop */
+		udelay(100);
 	}
 
 	schedule_work(&mvm->fw_error_dump_wk);