A soft lockup was observed on ARM multicore platform while UDP RX iperf was running on station.
Reason for this is delay_main_task was not taken into consideration while jumping to process_start. Now if delay_main_task is true, we would exit mwifiex_main_process instead of going to process_start again. This ensure other process is scheduled on this CPU and soft lockup is avoided. Signed-off-by: Amitkumar Karwar <[email protected]> Signed-off-by: Kevin Gan <[email protected]> Signed-off-by: Marc Yang <[email protected]> Signed-off-by: Avinash Patil <[email protected]> Signed-off-by: Cathy Luo <[email protected]> --- drivers/net/wireless/mwifiex/main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c index b522f7c..be52189 100644 --- a/drivers/net/wireless/mwifiex/main.c +++ b/drivers/net/wireless/mwifiex/main.c @@ -330,7 +330,8 @@ process_start: } while (true); spin_lock_irqsave(&adapter->main_proc_lock, flags); - if ((adapter->int_status) || IS_CARD_RX_RCVD(adapter)) { + if (!adapter->delay_main_work && + (adapter->int_status || IS_CARD_RX_RCVD(adapter))) { spin_unlock_irqrestore(&adapter->main_proc_lock, flags); goto process_start; } -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
