[PATCH AUTOSEL 5.10 14/25] iwlwifi: mvm: take mutex for calling iwl_mvm_get_sync_time()
From: Sasha Levin <sashal@kernel.org>
Date: 2021-02-02 15:12:23
Also in:
linux-wireless, lkml, netdev
Subsystem:
intel wireless wifi link (iwlwifi), the rest · Maintainers:
Miri Korenblit, Linus Torvalds
From: Johannes Berg <redacted> [ Upstream commit 5c56d862c749669d45c256f581eac4244be00d4d ] We need to take the mutex to call iwl_mvm_get_sync_time(), do it. Signed-off-by: Johannes Berg <redacted> Signed-off-by: Luca Coelho <redacted> Signed-off-by: Kalle Valo <redacted> Link: https://lore.kernel.org/r/iwlwifi.20210115130252.4bb5ccf881a6.I62973cbb081e80aa5b0447a5c3b9c3251a65cf6b@changeid (local) Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c
index f043eefabb4ec..7b1d2dac6ceb8 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c@@ -514,7 +514,10 @@ 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);
--
2.27.0