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Commit 71404a2f authored by Corey Minyard's avatar Corey Minyard
Browse files

ipmi: Consolidate cleanup code 



The cleanup code for an init failure and for a device removal were
quite similar, consolidate all that into one function.

Signed-off-by: default avatarCorey Minyard <cminyard@mvista.com>
parent da18e2c6

drivers/char/ipmi/ipmi_si_intf.c

+70 −94
Original line number Diff line number Diff line
@@ -235,6 +235,9 @@ struct smi_info { 
	/* Have we added the device group to the device? */

	bool dev_group_added;



	/* Have we added the platform device? */

	bool pdev_registered;



	/* Counters and things for the proc filesystem. */

	atomic_t stats[SI_NUM_STATS];
@@ -258,7 +261,8 @@ static int num_max_busy_us; 
static bool unload_when_empty = true;



static int try_smi_init(struct smi_info *smi);

static void cleanup_one_si(struct smi_info *to_clean);

static void shutdown_one_si(struct smi_info *smi_info);

static void cleanup_one_si(struct smi_info *smi_info);

static void cleanup_ipmi_si(void);



#ifdef DEBUG_TIMING
@@ -2025,7 +2029,6 @@ static int try_smi_init(struct smi_info *new_smi) 
	int rv = 0;

	int i;

	char *init_name = NULL;

	bool platform_device_registered = false;



	pr_info(PFX "Trying %s-specified %s state machine at %s address 0x%lx, slave address 0x%x, irq %d\n",

		ipmi_addr_src_to_str(new_smi->io.addr_source),
@@ -2146,7 +2149,7 @@ static int try_smi_init(struct smi_info *new_smi) 
		atomic_set(&new_smi->req_events, 1);

	}



	if (new_smi->pdev) {

	if (new_smi->pdev && !new_smi->pdev_registered) {

		rv = platform_device_add(new_smi->pdev);

		if (rv) {

			dev_err(new_smi->io.dev,
@@ -2154,7 +2157,7 @@ static int try_smi_init(struct smi_info *new_smi) 
				rv);

			goto out_err;

		}

		platform_device_registered = true;

		new_smi->pdev_registered = true;

	}



	dev_set_drvdata(new_smi->io.dev, new_smi);
@@ -2163,7 +2166,7 @@ static int try_smi_init(struct smi_info *new_smi) 
		dev_err(new_smi->io.dev,

			"Unable to add device attributes: error %d\n",

			rv);

		goto out_err_stop_timer;

		goto out_err;

	}

	new_smi->dev_group_added = true;
@@ -2175,7 +2178,7 @@ static int try_smi_init(struct smi_info *new_smi) 
		dev_err(new_smi->io.dev,

			"Unable to register device: error %d\n",

			rv);

		goto out_err_remove_attrs;

		goto out_err;

	}



#ifdef CONFIG_IPMI_PROC_INTERFACE
@@ -2185,7 +2188,7 @@ static int try_smi_init(struct smi_info *new_smi) 
	if (rv) {

		dev_err(new_smi->io.dev,

			"Unable to create proc entry: %d\n", rv);

		goto out_err_stop_timer;

		goto out_err;

	}



	rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats",
@@ -2194,7 +2197,7 @@ static int try_smi_init(struct smi_info *new_smi) 
	if (rv) {

		dev_err(new_smi->io.dev,

			"Unable to create proc entry: %d\n", rv);

		goto out_err_stop_timer;

		goto out_err;

	}



	rv = ipmi_smi_add_proc_entry(new_smi->intf, "params",
@@ -2203,7 +2206,7 @@ static int try_smi_init(struct smi_info *new_smi) 
	if (rv) {

		dev_err(new_smi->io.dev,

			"Unable to create proc entry: %d\n", rv);

		goto out_err_stop_timer;

		goto out_err;

	}

#endif
@@ -2218,60 +2221,8 @@ static int try_smi_init(struct smi_info *new_smi) 


	return 0;



out_err_remove_attrs:

	if (new_smi->dev_group_added) {

		device_remove_group(new_smi->io.dev, &ipmi_si_dev_attr_group);

		new_smi->dev_group_added = false;

	}

	dev_set_drvdata(new_smi->io.dev, NULL);



out_err_stop_timer:

	stop_timer_and_thread(new_smi);



out_err:

	new_smi->interrupt_disabled = true;



	if (new_smi->intf) {

		ipmi_smi_t intf = new_smi->intf;

		new_smi->intf = NULL;

		ipmi_unregister_smi(intf);

	}



	if (new_smi->io.irq_cleanup) {

		new_smi->io.irq_cleanup(&new_smi->io);

		new_smi->io.irq_cleanup = NULL;

	}



	/*

	 * Wait until we know that we are out of any interrupt

	 * handlers might have been running before we freed the

	 * interrupt.

	 */

	synchronize_sched();



	if (new_smi->si_sm) {

		if (new_smi->handlers)

			new_smi->handlers->cleanup(new_smi->si_sm);

		kfree(new_smi->si_sm);

		new_smi->si_sm = NULL;

	}

	if (new_smi->io.addr_source_cleanup) {

		new_smi->io.addr_source_cleanup(&new_smi->io);

		new_smi->io.addr_source_cleanup = NULL;

	}

	if (new_smi->io.io_cleanup) {

		new_smi->io.io_cleanup(&new_smi->io);

		new_smi->io.io_cleanup = NULL;

	}



	if (new_smi->pdev) {

		if (platform_device_registered)

			platform_device_unregister(new_smi->pdev);

		else

			platform_device_put(new_smi->pdev);

		new_smi->pdev = NULL;

		new_smi->io.dev = NULL;

	}

	shutdown_one_si(new_smi);



	kfree(init_name);
@@ -2349,17 +2300,14 @@ static int init_ipmi_si(void) 
}

module_init(init_ipmi_si);



static void cleanup_one_si(struct smi_info *to_clean)

static void shutdown_one_si(struct smi_info *smi_info)

{

	int           rv = 0;



	if (!to_clean)

		return;

	if (smi_info->intf) {

		ipmi_smi_t intf = smi_info->intf;



	if (to_clean->intf) {

		ipmi_smi_t intf = to_clean->intf;



		to_clean->intf = NULL;

		smi_info->intf = NULL;

		rv = ipmi_unregister_smi(intf);

		if (rv) {

			pr_err(PFX "Unable to unregister device: errno=%d\n",
@@ -2367,51 +2315,79 @@ static void cleanup_one_si(struct smi_info *to_clean) 
		}

	}



	if (to_clean->dev_group_added)

		device_remove_group(to_clean->io.dev, &ipmi_si_dev_attr_group);

	if (to_clean->io.dev)

		dev_set_drvdata(to_clean->io.dev, NULL);



	list_del(&to_clean->link);

	if (smi_info->dev_group_added) {

		device_remove_group(smi_info->io.dev, &ipmi_si_dev_attr_group);

		smi_info->dev_group_added = false;

	}

	if (smi_info->io.dev)

		dev_set_drvdata(smi_info->io.dev, NULL);



	/*

	 * Make sure that interrupts, the timer and the thread are

	 * stopped and will not run again.

	 */

	if (to_clean->io.irq_cleanup)

		to_clean->io.irq_cleanup(&to_clean->io);

	stop_timer_and_thread(to_clean);

	smi_info->interrupt_disabled = true;

	if (smi_info->io.irq_cleanup) {

		smi_info->io.irq_cleanup(&smi_info->io);

		smi_info->io.irq_cleanup = NULL;

	}

	stop_timer_and_thread(smi_info);



	/*

	 * Wait until we know that we are out of any interrupt

	 * handlers might have been running before we freed the

	 * interrupt.

	 */

	synchronize_sched();



	/*

	 * Timeouts are stopped, now make sure the interrupts are off

	 * in the BMC.  Note that timers and CPU interrupts are off,

	 * so no need for locks.

	 */

	while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) {

		poll(to_clean);

	while (smi_info->curr_msg || (smi_info->si_state != SI_NORMAL)) {

		poll(smi_info);

		schedule_timeout_uninterruptible(1);

	}

	if (to_clean->handlers)

		disable_si_irq(to_clean);

	while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) {

		poll(to_clean);

	if (smi_info->handlers)

		disable_si_irq(smi_info);

	while (smi_info->curr_msg || (smi_info->si_state != SI_NORMAL)) {

		poll(smi_info);

		schedule_timeout_uninterruptible(1);

	}

	if (smi_info->handlers)

		smi_info->handlers->cleanup(smi_info->si_sm);



	if (smi_info->io.addr_source_cleanup) {

		smi_info->io.addr_source_cleanup(&smi_info->io);

		smi_info->io.addr_source_cleanup = NULL;

	}

	if (smi_info->io.io_cleanup) {

		smi_info->io.io_cleanup(&smi_info->io);

		smi_info->io.io_cleanup = NULL;

	}



	if (to_clean->handlers)

		to_clean->handlers->cleanup(to_clean->si_sm);

	kfree(smi_info->si_sm);

	smi_info->si_sm = NULL;

}



static void cleanup_one_si(struct smi_info *smi_info)

{

	if (!smi_info)

		return;



	kfree(to_clean->si_sm);

	list_del(&smi_info->link);



	if (to_clean->io.addr_source_cleanup)

		to_clean->io.addr_source_cleanup(&to_clean->io);

	if (to_clean->io.io_cleanup)

		to_clean->io.io_cleanup(&to_clean->io);

	shutdown_one_si(smi_info);



	if (to_clean->pdev)

		platform_device_unregister(to_clean->pdev);

	if (smi_info->pdev) {

		if (smi_info->pdev_registered)

			platform_device_unregister(smi_info->pdev);

		else

			platform_device_put(smi_info->pdev);

	}



	kfree(to_clean);

	kfree(smi_info);

}



int ipmi_si_remove_by_dev(struct device *dev)