From: Amitkumar Karwar Date: Wed, 31 Dec 2014 10:36:43 +0000 (-0800) Subject: mwifiex: do not release lock during list_for_each_entry_safe() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b420166fa87a281a5476716982655009fd11e724;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git mwifiex: do not release lock during list_for_each_entry_safe() As we are releasing the lock, during next iteration we may end up getting page fault if other thread has already deleted that node. Signed-off-by: Cathy Luo Signed-off-by: Avinash Patil Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo --- diff --git a/drivers/net/wireless/mwifiex/cmdevt.c b/drivers/net/wireless/mwifiex/cmdevt.c index 85597200badc..946a2f7a172f 100644 --- a/drivers/net/wireless/mwifiex/cmdevt.c +++ b/drivers/net/wireless/mwifiex/cmdevt.c @@ -1008,11 +1008,9 @@ mwifiex_cancel_all_pending_cmd(struct mwifiex_adapter *adapter) list_for_each_entry_safe(cmd_node, tmp_node, &adapter->scan_pending_q, list) { list_del(&cmd_node->list); - spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); cmd_node->wait_q_enabled = false; mwifiex_insert_cmd_to_free_q(adapter, cmd_node); - spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); } spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); @@ -1070,12 +1068,8 @@ mwifiex_cancel_pending_ioctl(struct mwifiex_adapter *adapter) list_for_each_entry_safe(cmd_node, tmp_node, &adapter->scan_pending_q, list) { list_del(&cmd_node->list); - spin_unlock_irqrestore(&adapter->scan_pending_q_lock, - scan_pending_q_flags); cmd_node->wait_q_enabled = false; mwifiex_insert_cmd_to_free_q(adapter, cmd_node); - spin_lock_irqsave(&adapter->scan_pending_q_lock, - scan_pending_q_flags); } spin_unlock_irqrestore(&adapter->scan_pending_q_lock, scan_pending_q_flags);