mirror of https://gitee.com/openkylin/linux.git
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: Corey Minyard <cminyard@mvista.com>
This commit is contained in:
Corey Minyard
parent
da18e2c6a8
commit
71404a2f75
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@ -235,6 +235,9 @@ struct smi_info {
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/* Have we added the device group to the device? */
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bool dev_group_added;
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/* Have we added the platform device? */
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bool pdev_registered;
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/* Counters and things for the proc filesystem. */
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atomic_t stats[SI_NUM_STATS];
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@ -258,7 +261,8 @@ static int num_max_busy_us;
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static bool unload_when_empty = true;
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static int try_smi_init(struct smi_info *smi);
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static void cleanup_one_si(struct smi_info *to_clean);
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static void shutdown_one_si(struct smi_info *smi_info);
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static void cleanup_one_si(struct smi_info *smi_info);
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static void cleanup_ipmi_si(void);
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#ifdef DEBUG_TIMING
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@ -2025,7 +2029,6 @@ static int try_smi_init(struct smi_info *new_smi)
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int rv = 0;
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int i;
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char *init_name = NULL;
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bool platform_device_registered = false;
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pr_info(PFX "Trying %s-specified %s state machine at %s address 0x%lx, slave address 0x%x, irq %d\n",
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ipmi_addr_src_to_str(new_smi->io.addr_source),
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@ -2146,7 +2149,7 @@ static int try_smi_init(struct smi_info *new_smi)
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atomic_set(&new_smi->req_events, 1);
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}
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if (new_smi->pdev) {
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if (new_smi->pdev && !new_smi->pdev_registered) {
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rv = platform_device_add(new_smi->pdev);
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if (rv) {
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dev_err(new_smi->io.dev,
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@ -2154,7 +2157,7 @@ static int try_smi_init(struct smi_info *new_smi)
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rv);
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goto out_err;
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}
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platform_device_registered = true;
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new_smi->pdev_registered = true;
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}
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dev_set_drvdata(new_smi->io.dev, new_smi);
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@ -2163,7 +2166,7 @@ static int try_smi_init(struct smi_info *new_smi)
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dev_err(new_smi->io.dev,
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"Unable to add device attributes: error %d\n",
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rv);
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goto out_err_stop_timer;
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goto out_err;
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}
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new_smi->dev_group_added = true;
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@ -2175,7 +2178,7 @@ static int try_smi_init(struct smi_info *new_smi)
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dev_err(new_smi->io.dev,
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"Unable to register device: error %d\n",
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rv);
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goto out_err_remove_attrs;
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goto out_err;
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}
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#ifdef CONFIG_IPMI_PROC_INTERFACE
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@ -2185,7 +2188,7 @@ static int try_smi_init(struct smi_info *new_smi)
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if (rv) {
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dev_err(new_smi->io.dev,
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"Unable to create proc entry: %d\n", rv);
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goto out_err_stop_timer;
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goto out_err;
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}
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rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats",
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@ -2194,7 +2197,7 @@ static int try_smi_init(struct smi_info *new_smi)
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if (rv) {
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dev_err(new_smi->io.dev,
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"Unable to create proc entry: %d\n", rv);
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goto out_err_stop_timer;
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goto out_err;
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}
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rv = ipmi_smi_add_proc_entry(new_smi->intf, "params",
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@ -2203,7 +2206,7 @@ static int try_smi_init(struct smi_info *new_smi)
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if (rv) {
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dev_err(new_smi->io.dev,
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"Unable to create proc entry: %d\n", rv);
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goto out_err_stop_timer;
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goto out_err;
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}
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#endif
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@ -2218,60 +2221,8 @@ static int try_smi_init(struct smi_info *new_smi)
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return 0;
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out_err_remove_attrs:
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if (new_smi->dev_group_added) {
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device_remove_group(new_smi->io.dev, &ipmi_si_dev_attr_group);
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new_smi->dev_group_added = false;
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}
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dev_set_drvdata(new_smi->io.dev, NULL);
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out_err_stop_timer:
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stop_timer_and_thread(new_smi);
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out_err:
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new_smi->interrupt_disabled = true;
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if (new_smi->intf) {
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ipmi_smi_t intf = new_smi->intf;
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new_smi->intf = NULL;
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ipmi_unregister_smi(intf);
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}
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if (new_smi->io.irq_cleanup) {
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new_smi->io.irq_cleanup(&new_smi->io);
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new_smi->io.irq_cleanup = NULL;
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}
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/*
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* Wait until we know that we are out of any interrupt
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* handlers might have been running before we freed the
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* interrupt.
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*/
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synchronize_sched();
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if (new_smi->si_sm) {
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if (new_smi->handlers)
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new_smi->handlers->cleanup(new_smi->si_sm);
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kfree(new_smi->si_sm);
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new_smi->si_sm = NULL;
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}
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if (new_smi->io.addr_source_cleanup) {
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new_smi->io.addr_source_cleanup(&new_smi->io);
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new_smi->io.addr_source_cleanup = NULL;
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}
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if (new_smi->io.io_cleanup) {
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new_smi->io.io_cleanup(&new_smi->io);
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new_smi->io.io_cleanup = NULL;
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}
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if (new_smi->pdev) {
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if (platform_device_registered)
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platform_device_unregister(new_smi->pdev);
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else
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platform_device_put(new_smi->pdev);
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new_smi->pdev = NULL;
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new_smi->io.dev = NULL;
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}
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shutdown_one_si(new_smi);
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kfree(init_name);
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@ -2349,17 +2300,14 @@ static int init_ipmi_si(void)
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}
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module_init(init_ipmi_si);
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static void cleanup_one_si(struct smi_info *to_clean)
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static void shutdown_one_si(struct smi_info *smi_info)
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{
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int rv = 0;
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if (!to_clean)
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return;
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if (smi_info->intf) {
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ipmi_smi_t intf = smi_info->intf;
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if (to_clean->intf) {
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ipmi_smi_t intf = to_clean->intf;
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to_clean->intf = NULL;
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smi_info->intf = NULL;
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rv = ipmi_unregister_smi(intf);
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if (rv) {
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pr_err(PFX "Unable to unregister device: errno=%d\n",
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@ -2367,51 +2315,79 @@ static void cleanup_one_si(struct smi_info *to_clean)
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}
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}
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if (to_clean->dev_group_added)
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device_remove_group(to_clean->io.dev, &ipmi_si_dev_attr_group);
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if (to_clean->io.dev)
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dev_set_drvdata(to_clean->io.dev, NULL);
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list_del(&to_clean->link);
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if (smi_info->dev_group_added) {
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device_remove_group(smi_info->io.dev, &ipmi_si_dev_attr_group);
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smi_info->dev_group_added = false;
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}
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if (smi_info->io.dev)
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dev_set_drvdata(smi_info->io.dev, NULL);
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/*
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* Make sure that interrupts, the timer and the thread are
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* stopped and will not run again.
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*/
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if (to_clean->io.irq_cleanup)
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to_clean->io.irq_cleanup(&to_clean->io);
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stop_timer_and_thread(to_clean);
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smi_info->interrupt_disabled = true;
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if (smi_info->io.irq_cleanup) {
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smi_info->io.irq_cleanup(&smi_info->io);
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smi_info->io.irq_cleanup = NULL;
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}
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stop_timer_and_thread(smi_info);
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/*
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* Wait until we know that we are out of any interrupt
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* handlers might have been running before we freed the
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* interrupt.
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*/
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synchronize_sched();
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/*
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* Timeouts are stopped, now make sure the interrupts are off
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* in the BMC. Note that timers and CPU interrupts are off,
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* so no need for locks.
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*/
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while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) {
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poll(to_clean);
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while (smi_info->curr_msg || (smi_info->si_state != SI_NORMAL)) {
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poll(smi_info);
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schedule_timeout_uninterruptible(1);
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}
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if (to_clean->handlers)
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disable_si_irq(to_clean);
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while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) {
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poll(to_clean);
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if (smi_info->handlers)
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disable_si_irq(smi_info);
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while (smi_info->curr_msg || (smi_info->si_state != SI_NORMAL)) {
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poll(smi_info);
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schedule_timeout_uninterruptible(1);
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}
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if (smi_info->handlers)
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smi_info->handlers->cleanup(smi_info->si_sm);
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if (to_clean->handlers)
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to_clean->handlers->cleanup(to_clean->si_sm);
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if (smi_info->io.addr_source_cleanup) {
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smi_info->io.addr_source_cleanup(&smi_info->io);
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smi_info->io.addr_source_cleanup = NULL;
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}
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if (smi_info->io.io_cleanup) {
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smi_info->io.io_cleanup(&smi_info->io);
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smi_info->io.io_cleanup = NULL;
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}
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kfree(to_clean->si_sm);
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kfree(smi_info->si_sm);
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smi_info->si_sm = NULL;
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}
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if (to_clean->io.addr_source_cleanup)
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to_clean->io.addr_source_cleanup(&to_clean->io);
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if (to_clean->io.io_cleanup)
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to_clean->io.io_cleanup(&to_clean->io);
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static void cleanup_one_si(struct smi_info *smi_info)
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{
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if (!smi_info)
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return;
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if (to_clean->pdev)
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platform_device_unregister(to_clean->pdev);
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list_del(&smi_info->link);
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kfree(to_clean);
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shutdown_one_si(smi_info);
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if (smi_info->pdev) {
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if (smi_info->pdev_registered)
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platform_device_unregister(smi_info->pdev);
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else
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platform_device_put(smi_info->pdev);
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}
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kfree(smi_info);
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}
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int ipmi_si_remove_by_dev(struct device *dev)
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