From: Johannes Berg johannes.berg@intel.com
[ Upstream commit 8b0f92549f2c2458200935c12a2e2a6e80234cf5 ]
On a 32-bit build, the division here needs to be done using do_div(), otherwise the compiler will try to call a function that doesn't exist, thus failing to build.
Fixes: b68bd2e3143a ("iwlwifi: mvm: Add FTM initiator RTT smoothing logic") Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Luca Coelho luciano.coelho@intel.com Link: https://lore.kernel.org/r/iwlwifi.20211219111352.e56cbf614a4d.Ib98004ccd2c7a... Signed-off-by: Luca Coelho luciano.coelho@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c b/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c index a0ce761d0c59b..fe3d52620a897 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c @@ -967,7 +967,8 @@ static void iwl_mvm_ftm_rtt_smoothing(struct iwl_mvm *mvm, overshoot = IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT; alpha = IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA;
- rtt_avg = (alpha * rtt + (100 - alpha) * resp->rtt_avg) / 100; + rtt_avg = alpha * rtt + (100 - alpha) * resp->rtt_avg; + do_div(rtt_avg, 100);
IWL_DEBUG_INFO(mvm, "%pM: prev rtt_avg=%lld, new rtt_avg=%lld, rtt=%lld\n",