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authorDavid Woodhouse <dwmw2@infradead.org>2007-12-13 21:48:00 -0500
committerDavid S. Miller <davem@davemloft.net>2008-01-28 15:07:26 -0800
commitd9f88705a7ce2f9ef13d6656ee715493a663edfc (patch)
treef287e8ab83c28bc99e4c37fef08b56ed82fae12f /drivers/net/wireless/libertas
parent4ad36d780caf34630d1a4cc39f9bc11017f5b81d (diff)
libertas: don't exit worker thread until kthread_stop() is called
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@infradead.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/libertas')
-rw-r--r--drivers/net/wireless/libertas/main.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index 5d2bf539d4b..b51513fb59e 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);