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iwlwifi: mvm: take mutex for calling iwl_mvm_get_sync_time()

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[ Upstream commit 5c56d862c749669d45c256f581eac4244be00d4d ]

We need to take the mutex to call iwl_mvm_get_sync_time(), do it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20210115130252.4bb5ccf881a6.I62973cbb081e80aa5b0447a5c3b9c3251a65cf6b@changeid
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Johannes Berg 2021-01-15 13:05:48 +02:00 committed by Greg Kroah-Hartman
parent fd9d119a3e
commit b18f94503a
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c
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@ -518,7 +518,10 @@ static ssize_t iwl_dbgfs_os_device_timediff_read(struct file *file,
const size_t bufsz = sizeof(buf);
int pos = 0;
mutex_lock(&mvm->mutex);
iwl_mvm_get_sync_time(mvm, &curr_gp2, &curr_os);
mutex_unlock(&mvm->mutex);
do_div(curr_os, NSEC_PER_USEC);
diff = curr_os - curr_gp2;
pos += scnprintf(buf + pos, bufsz - pos, "diff=%lld\n", diff);