From dc57731dbd535880fe6ced31c229262c34df7d64 Mon Sep 17 00:00:00 2001 From: Lior David Date: Wed, 31 Oct 2018 10:52:24 +0200 Subject: [PATCH] wil6210: fix locking in wmi_call Switch from spin_lock to spin_lock_irqsave, because wmi_ev_lock is used inside interrupt handler. Signed-off-by: Lior David Signed-off-by: Maya Erez Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/wil6210/wmi.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c index f46c703ca570..345f05969190 100644 --- a/drivers/net/wireless/ath/wil6210/wmi.c +++ b/drivers/net/wireless/ath/wil6210/wmi.c @@ -1966,16 +1966,17 @@ int wmi_call(struct wil6210_priv *wil, u16 cmdid, u8 mid, void *buf, u16 len, { int rc; unsigned long remain; + ulong flags; mutex_lock(&wil->wmi_mutex); - spin_lock(&wil->wmi_ev_lock); + spin_lock_irqsave(&wil->wmi_ev_lock, flags); wil->reply_id = reply_id; wil->reply_mid = mid; wil->reply_buf = reply; wil->reply_size = reply_size; reinit_completion(&wil->wmi_call); - spin_unlock(&wil->wmi_ev_lock); + spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); rc = __wmi_send(wil, cmdid, mid, buf, len); if (rc) @@ -1995,12 +1996,12 @@ int wmi_call(struct wil6210_priv *wil, u16 cmdid, u8 mid, void *buf, u16 len, } out: - spin_lock(&wil->wmi_ev_lock); + spin_lock_irqsave(&wil->wmi_ev_lock, flags); wil->reply_id = 0; wil->reply_mid = U8_MAX; wil->reply_buf = NULL; wil->reply_size = 0; - spin_unlock(&wil->wmi_ev_lock); + spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); mutex_unlock(&wil->wmi_mutex); -- 2.39.5