Date: Thu, 13 Dec 2007 21:48:00 -0500
The kthread code can't cope with a thread exiting of its own accord and
then someone calling kthread_stop() for it. When the thread detects that
it needs to die, make it wait for kthread_stop() to be called.
Signed-off-by: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
---
drivers/net/wireless/libertas/main.c | 13 +++++++++----
1 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index 5d2bf53..b51513f 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -662,8 +662,10 @@ static int lbs_thread(void *data)
set_current_state(TASK_INTERRUPTIBLE);
spin_lock_irq(&priv->driver_lock);
- if (priv->surpriseremoved)
+ if (kthread_should_stop())
shouldsleep = 0; /* Bye */
+ else if (priv->surpriseremoved)
+ shouldsleep = 1; /* We need to wait until we're _told_ to die */
else if (priv->psstate == PS_STATE_SLEEP)
shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
else if (priv->intcounter)
@@ -699,12 +701,15 @@ static int lbs_thread(void *data)
lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
priv->intcounter, priv->currenttxskb, priv->dnld_sent);
- if (kthread_should_stop() || priv->surpriseremoved) {
- lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
- priv->surpriseremoved);
+ if (kthread_should_stop()) {
+ lbs_deb_thread("main-thread: break from main thread\n");
break;
}
+ if (priv->surpriseremoved) {
+ lbs_deb_thread("adapter removed; waiting to die...\n");
+ continue;
+ }
spin_lock_irq(&priv->driver_lock);
--
1.5.3.4
-
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