Commit 9426cd05 authored by Oliver Neukum's avatar Oliver Neukum Committed by Greg Kroah-Hartman

uwb: fix use of del_timer_sync() in interrupt

del_timer_sync() cannot be used in interrupt.
Replace it with del_timer() and a flag
Signed-off-by: default avatarOliver Neukum <oneukum@suse.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 2fbe2bf1
......@@ -107,6 +107,7 @@ struct uwb_rc_neh {
u8 evt_type;
__le16 evt;
u8 context;
u8 completed;
uwb_rc_cmd_cb_f cb;
void *arg;
......@@ -409,6 +410,7 @@ static void uwb_rc_neh_grok_event(struct uwb_rc *rc, struct uwb_rceb *rceb, size
struct device *dev = &rc->uwb_dev.dev;
struct uwb_rc_neh *neh;
struct uwb_rceb *notif;
unsigned long flags;
if (rceb->bEventContext == 0) {
notif = kmalloc(size, GFP_ATOMIC);
......@@ -422,7 +424,11 @@ static void uwb_rc_neh_grok_event(struct uwb_rc *rc, struct uwb_rceb *rceb, size
} else {
neh = uwb_rc_neh_lookup(rc, rceb);
if (neh) {
del_timer_sync(&neh->timer);
spin_lock_irqsave(&rc->neh_lock, flags);
/* to guard against a timeout */
neh->completed = 1;
del_timer(&neh->timer);
spin_unlock_irqrestore(&rc->neh_lock, flags);
uwb_rc_neh_cb(neh, rceb, size);
} else
dev_warn(dev, "event 0x%02x/%04x/%02x (%zu bytes): nobody cared\n",
......@@ -568,6 +574,10 @@ static void uwb_rc_neh_timer(unsigned long arg)
unsigned long flags;
spin_lock_irqsave(&rc->neh_lock, flags);
if (neh->completed) {
spin_unlock_irqrestore(&rc->neh_lock, flags);
return;
}
if (neh->context)
__uwb_rc_neh_rm(rc, neh);
else
......
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