From: Liad Kaufman <[email protected]>

In case platform is in d0i3 - make sure it is awake when
writing the registers to stop the monitor when collecting FW
debug data. Plus, remove unneeded mutex locking currently
done.

Signed-off-by: Liad Kaufman <[email protected]>
Signed-off-by: Emmanuel Grumbach <[email protected]>
---
 drivers/net/wireless/iwlwifi/mvm/debugfs.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c 
b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
index f89b795..afd1986 100644
--- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
@@ -988,9 +988,14 @@ static ssize_t iwl_dbgfs_fw_dbg_collect_write(struct 
iwl_mvm *mvm,
                                              char *buf, size_t count,
                                              loff_t *ppos)
 {
-       mutex_lock(&mvm->mutex);
+       int ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_WRITE);
+
+       if (ret)
+               return ret;
+
        iwl_mvm_fw_dbg_collect(mvm);
-       mutex_unlock(&mvm->mutex);
+
+       iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_WRITE);
 
        return count;
 }
-- 
1.9.1

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