usb_put_urb(urb);
}
-static void usb_giveback_urb_bh(struct tasklet_struct *t)
+static void usb_giveback_urb_bh(struct work_struct *work)
{
- struct giveback_urb_bh *bh = from_tasklet(bh, t, bh);
+ struct giveback_urb_bh *bh =
+ container_of(work, struct giveback_urb_bh, bh);
struct list_head local_list;
spin_lock_irq(&bh->lock);
spin_lock_irq(&bh->lock);
if (!list_empty(&bh->head)) {
if (bh->high_prio)
- tasklet_hi_schedule(&bh->bh);
+ queue_work(system_bh_highpri_wq, &bh->bh);
else
- tasklet_schedule(&bh->bh);
+ queue_work(system_bh_wq, &bh->bh);
}
bh->running = false;
spin_unlock_irq(&bh->lock);
* @status: completion status code for the URB.
*
* Context: atomic. The completion callback is invoked in caller's context.
- * For HCDs with HCD_BH flag set, the completion callback is invoked in tasklet
+ * For HCDs with HCD_BH flag set, the completion callback is invoked in BH
* context (except for URBs submitted to the root hub which always complete in
* caller's context).
*
struct giveback_urb_bh *bh;
bool running;
- /* pass status to tasklet via unlinked */
+ /* pass status to BH via unlinked */
if (likely(!urb->unlinked))
urb->unlinked = status;
if (running)
;
else if (bh->high_prio)
- tasklet_hi_schedule(&bh->bh);
+ queue_work(system_bh_highpri_wq, &bh->bh);
else
- tasklet_schedule(&bh->bh);
+ queue_work(system_bh_wq, &bh->bh);
}
EXPORT_SYMBOL_GPL(usb_hcd_giveback_urb);
spin_lock_init(&bh->lock);
INIT_LIST_HEAD(&bh->head);
- tasklet_setup(&bh->bh, usb_giveback_urb_bh);
+ INIT_WORK(&bh->bh, usb_giveback_urb_bh);
}
struct usb_hcd *__usb_create_hcd(const struct hc_driver *driver,
&& device_can_wakeup(&hcd->self.root_hub->dev))
dev_dbg(hcd->self.controller, "supports USB remote wakeup\n");
- /* initialize tasklets */
+ /* initialize BHs */
init_giveback_urb_bh(&hcd->high_prio_bh);
hcd->high_prio_bh.high_prio = true;
init_giveback_urb_bh(&hcd->low_prio_bh);
mutex_unlock(&usb_bus_idr_lock);
/*
- * tasklet_kill() isn't needed here because:
+ * flush_work() isn't needed here because:
* - driver's disconnect() called from usb_disconnect() should
* make sure its URBs are completed during the disconnect()
* callback
dump_stack();
}
-static DECLARE_COMPLETION(backtrace_work);
-
-static void backtrace_test_irq_callback(unsigned long data)
+static void backtrace_test_bh_workfn(struct work_struct *work)
{
dump_stack();
- complete(&backtrace_work);
}
-static DECLARE_TASKLET_OLD(backtrace_tasklet, &backtrace_test_irq_callback);
+static DECLARE_WORK(backtrace_bh_work, &backtrace_test_bh_workfn);
-static void backtrace_test_irq(void)
+static void backtrace_test_bh(void)
{
- pr_info("Testing a backtrace from irq context.\n");
+ pr_info("Testing a backtrace from BH context.\n");
pr_info("The following trace is a kernel self test and not a bug!\n");
- init_completion(&backtrace_work);
- tasklet_schedule(&backtrace_tasklet);
- wait_for_completion(&backtrace_work);
+ queue_work(system_bh_wq, &backtrace_bh_work);
+ flush_work(&backtrace_bh_work);
}
#ifdef CONFIG_STACKTRACE
pr_info("====[ backtrace testing ]===========\n");
backtrace_test_normal();
- backtrace_test_irq();
+ backtrace_test_bh();
backtrace_test_saved();
pr_info("====[ end of backtrace testing ]====\n");