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Commit 1c2b7db8 authored by Michal Schmidt's avatar Michal Schmidt Committed by John W. Linville
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[PATCH] airo: delay some initialization until the netdev is up 



airo's kernel thread and the IRQ handler are needed only when the interface
is up.

Signed-off-by: default avatarMichal Schmidt <mschmidt@redhat.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 777ec5e9

drivers/net/wireless/airo.c

+45 −35
Original line number Diff line number Diff line
@@ -1926,28 +1926,55 @@ static int readStatsRid(struct airo_info*ai, StatsRid *sr, int rid, int lock) { 
	return rc;

}



static void try_auto_wep(struct airo_info *ai)

{

	if (auto_wep && !(ai->flags & FLAG_RADIO_DOWN)) {

		ai->expires = RUN_AT(3*HZ);

		wake_up_interruptible(&ai->thr_wait);

	}

}



static int airo_open(struct net_device *dev) {

	struct airo_info *info = dev->priv;

	struct airo_info *ai = dev->priv;

	Resp rsp;

	int rc = 0;



	if (test_bit(FLAG_FLASHING, &info->flags))

	if (test_bit(FLAG_FLASHING, &ai->flags))

		return -EIO;



	/* Make sure the card is configured.

	 * Wireless Extensions may postpone config changes until the card

	 * is open (to pipeline changes and speed-up card setup). If

	 * those changes are not yet commited, do it now - Jean II */

	if (test_bit (FLAG_COMMIT, &info->flags)) {

		disable_MAC(info, 1);

		writeConfigRid(info, 1);

	if (test_bit(FLAG_COMMIT, &ai->flags)) {

		disable_MAC(ai, 1);

		writeConfigRid(ai, 1);

	}



	if (ai->wifidev != dev) {

		clear_bit(JOB_DIE, &ai->jobs);

		ai->airo_thread_task = kthread_run(airo_thread, dev, dev->name);

		if (IS_ERR(ai->airo_thread_task))

			return (int)PTR_ERR(ai->airo_thread_task);



		rc = request_irq(dev->irq, airo_interrupt, IRQF_SHARED,

			dev->name, dev);

		if (rc) {

			airo_print_err(dev->name,

				"register interrupt %d failed, rc %d",

				dev->irq, rc);

			set_bit(JOB_DIE, &ai->jobs);

			kthread_stop(ai->airo_thread_task);

			return rc;

		}



	if (info->wifidev != dev) {

		/* Power on the MAC controller (which may have been disabled) */

		clear_bit(FLAG_RADIO_DOWN, &info->flags);

		enable_interrupts(info);

		clear_bit(FLAG_RADIO_DOWN, &ai->flags);

		enable_interrupts(ai);



		try_auto_wep(ai);

	}

	enable_MAC(info, &rsp, 1);

	enable_MAC(ai, &rsp, 1);



	netif_start_queue(dev);

	return 0;
@@ -2392,6 +2419,11 @@ static int airo_close(struct net_device *dev) { 
		disable_MAC(ai, 1);

#endif

		disable_interrupts( ai );



		free_irq(dev->irq, dev);



		set_bit(JOB_DIE, &ai->jobs);

		kthread_stop(ai->airo_thread_task);

	}

	return 0;

}
@@ -2403,7 +2435,6 @@ void stop_airo_card( struct net_device *dev, int freeres ) 
	set_bit(FLAG_RADIO_DOWN, &ai->flags);

	disable_MAC(ai, 1);

	disable_interrupts(ai);

	free_irq( dev->irq, dev );

	takedown_proc_entry( dev, ai );

	if (test_bit(FLAG_REGISTERED, &ai->flags)) {

		unregister_netdev( dev );
@@ -2414,9 +2445,6 @@ void stop_airo_card( struct net_device *dev, int freeres ) 
		}

		clear_bit(FLAG_REGISTERED, &ai->flags);

	}

	set_bit(JOB_DIE, &ai->jobs);

	kthread_stop(ai->airo_thread_task);



	/*

	 * Clean out tx queue

	 */
@@ -2821,14 +2849,11 @@ static struct net_device *_init_airo_card( unsigned short irq, int port, 
	ai->config.len = 0;

	ai->pci = pci;

	init_waitqueue_head (&ai->thr_wait);

	ai->airo_thread_task = kthread_run(airo_thread, dev, dev->name);

	if (IS_ERR(ai->airo_thread_task))

		goto err_out_free;

	ai->tfm = NULL;

	add_airo_dev(ai);



	if (airo_networks_allocate (ai))

		goto err_out_thr;

		goto err_out_free;

	airo_networks_initialize (ai);



	/* The Airo-specific entries in the device structure. */
@@ -2851,21 +2876,16 @@ static struct net_device *_init_airo_card( unsigned short irq, int port, 
	dev->base_addr = port;



	SET_NETDEV_DEV(dev, dmdev);

	SET_MODULE_OWNER(dev);



	reset_card (dev, 1);

	msleep(400);



	rc = request_irq( dev->irq, airo_interrupt, IRQF_SHARED, dev->name, dev );

	if (rc) {

		airo_print_err(dev->name, "register interrupt %d failed, rc %d",

				irq, rc);

		goto err_out_nets;

	}

	if (!is_pcmcia) {

		if (!request_region( dev->base_addr, 64, dev->name )) {

			rc = -EBUSY;

			airo_print_err(dev->name, "Couldn't request region");

			goto err_out_irq;

			goto err_out_nets;

		}

	}
@@ -2921,8 +2941,6 @@ static struct net_device *_init_airo_card( unsigned short irq, int port, 
	if (setup_proc_entry(dev, dev->priv) < 0)

		goto err_out_wifi;



	netif_start_queue(dev);

	SET_MODULE_OWNER(dev);

	return dev;



err_out_wifi:
@@ -2940,14 +2958,9 @@ static struct net_device *_init_airo_card( unsigned short irq, int port, 
err_out_res:

	if (!is_pcmcia)

	        release_region( dev->base_addr, 64 );

err_out_irq:

	free_irq(dev->irq, dev);

err_out_nets:

	airo_networks_free(ai);

err_out_thr:

	del_airo_dev(ai);

	set_bit(JOB_DIE, &ai->jobs);

	kthread_stop(ai->airo_thread_task);

err_out_free:

	free_netdev(dev);

	return NULL;
@@ -3919,10 +3932,7 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock) 
		rc = readWepKeyRid(ai, &wkr, 0, lock);

	} while(lastindex != wkr.kindex);



	if (auto_wep) {

		ai->expires = RUN_AT(3*HZ);

		wake_up_interruptible(&ai->thr_wait);

	}

	try_auto_wep(ai);



	return SUCCESS;

}