mirror of https://gitee.com/openkylin/linux.git
genirq: Use irq_get/put functions
Convert the management functions to use the common irq_get/put function. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner
parent
d5eb4ad2df
commit
02725e7471
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@ -25,22 +25,18 @@
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*/
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int irq_set_chip(unsigned int irq, struct irq_chip *chip)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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unsigned long flags;
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struct irq_desc *desc = irq_get_desc_lock(irq, &flags);
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if (!desc) {
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WARN(1, KERN_ERR "Trying to install chip for IRQ%d\n", irq);
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if (!desc)
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return -EINVAL;
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}
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if (!chip)
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chip = &no_irq_chip;
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raw_spin_lock_irqsave(&desc->lock, flags);
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irq_chip_set_defaults(chip);
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desc->irq_data.chip = chip;
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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irq_put_desc_unlock(desc, flags);
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return 0;
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}
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EXPORT_SYMBOL(irq_set_chip);
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@ -52,24 +48,17 @@ EXPORT_SYMBOL(irq_set_chip);
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*/
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int irq_set_irq_type(unsigned int irq, unsigned int type)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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unsigned long flags;
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int ret = -ENXIO;
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struct irq_desc *desc = irq_get_desc_buslock(irq, &flags);
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int ret = 0;
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if (!desc) {
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printk(KERN_ERR "Trying to set irq type for IRQ%d\n", irq);
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return -ENODEV;
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}
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if (!desc)
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return -EINVAL;
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type &= IRQ_TYPE_SENSE_MASK;
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if (type == IRQ_TYPE_NONE)
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return 0;
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chip_bus_lock(desc);
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raw_spin_lock_irqsave(&desc->lock, flags);
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ret = __irq_set_trigger(desc, irq, type);
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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chip_bus_sync_unlock(desc);
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if (type != IRQ_TYPE_NONE)
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ret = __irq_set_trigger(desc, irq, type);
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irq_put_desc_busunlock(desc, flags);
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return ret;
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}
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EXPORT_SYMBOL(irq_set_irq_type);
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@ -83,18 +72,13 @@ EXPORT_SYMBOL(irq_set_irq_type);
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*/
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int irq_set_handler_data(unsigned int irq, void *data)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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unsigned long flags;
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struct irq_desc *desc = irq_get_desc_lock(irq, &flags);
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if (!desc) {
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printk(KERN_ERR
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"Trying to install controller data for IRQ%d\n", irq);
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if (!desc)
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return -EINVAL;
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}
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raw_spin_lock_irqsave(&desc->lock, flags);
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desc->irq_data.handler_data = data;
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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irq_put_desc_unlock(desc, flags);
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return 0;
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}
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EXPORT_SYMBOL(irq_set_handler_data);
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@ -108,20 +92,15 @@ EXPORT_SYMBOL(irq_set_handler_data);
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*/
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int irq_set_msi_desc(unsigned int irq, struct msi_desc *entry)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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unsigned long flags;
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struct irq_desc *desc = irq_get_desc_lock(irq, &flags);
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if (!desc) {
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printk(KERN_ERR
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"Trying to install msi data for IRQ%d\n", irq);
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if (!desc)
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return -EINVAL;
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}
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raw_spin_lock_irqsave(&desc->lock, flags);
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desc->irq_data.msi_desc = entry;
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if (entry)
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entry->irq = irq;
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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irq_put_desc_unlock(desc, flags);
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return 0;
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}
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@ -134,24 +113,13 @@ int irq_set_msi_desc(unsigned int irq, struct msi_desc *entry)
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*/
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int irq_set_chip_data(unsigned int irq, void *data)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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unsigned long flags;
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struct irq_desc *desc = irq_get_desc_lock(irq, &flags);
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if (!desc) {
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printk(KERN_ERR
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"Trying to install chip data for IRQ%d\n", irq);
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if (!desc)
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return -EINVAL;
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}
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if (!desc->irq_data.chip) {
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printk(KERN_ERR "BUG: bad set_irq_chip_data(IRQ#%d)\n", irq);
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return -EINVAL;
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}
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raw_spin_lock_irqsave(&desc->lock, flags);
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desc->irq_data.chip_data = data;
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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irq_put_desc_unlock(desc, flags);
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return 0;
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}
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EXPORT_SYMBOL(irq_set_chip_data);
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@ -635,25 +603,19 @@ void
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__set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
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const char *name)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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unsigned long flags;
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struct irq_desc *desc = irq_get_desc_buslock(irq, &flags);
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if (!desc) {
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printk(KERN_ERR
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"Trying to install type control for IRQ%d\n", irq);
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if (!desc)
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return;
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}
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if (!handle) {
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handle = handle_bad_irq;
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} else {
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if (WARN_ON(desc->irq_data.chip == &no_irq_chip))
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return;
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goto out;
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}
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chip_bus_lock(desc);
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raw_spin_lock_irqsave(&desc->lock, flags);
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/* Uninstall? */
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if (handle == handle_bad_irq) {
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if (desc->irq_data.chip != &no_irq_chip)
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@ -670,8 +632,8 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
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irq_settings_set_norequest(desc);
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irq_startup(desc);
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}
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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chip_bus_sync_unlock(desc);
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out:
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irq_put_desc_busunlock(desc, flags);
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}
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EXPORT_SYMBOL_GPL(__set_irq_handler);
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@ -693,14 +655,11 @@ set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip,
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void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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unsigned long flags;
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struct irq_desc *desc = irq_get_desc_lock(irq, &flags);
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if (!desc)
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return;
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raw_spin_lock_irqsave(&desc->lock, flags);
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irq_settings_clr_and_set(desc, clr, set);
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irqd_clear(&desc->irq_data, IRQD_NO_BALANCING | IRQD_PER_CPU |
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@ -714,5 +673,5 @@ void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set)
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irqd_set(&desc->irq_data, irq_settings_get_trigger_mask(desc));
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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irq_put_desc_unlock(desc, flags);
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}
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@ -172,16 +172,13 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *mask)
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int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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unsigned long flags;
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struct irq_desc *desc = irq_get_desc_lock(irq, &flags);
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if (!desc)
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return -EINVAL;
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raw_spin_lock_irqsave(&desc->lock, flags);
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desc->affinity_hint = m;
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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irq_put_desc_unlock(desc, flags);
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return 0;
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}
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EXPORT_SYMBOL_GPL(irq_set_affinity_hint);
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@ -336,6 +333,18 @@ void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend)
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irq_disable(desc);
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}
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static int __disable_irq_nosync(unsigned int irq)
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{
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unsigned long flags;
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struct irq_desc *desc = irq_get_desc_buslock(irq, &flags);
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if (!desc)
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return -EINVAL;
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__disable_irq(desc, irq, false);
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irq_put_desc_busunlock(desc, flags);
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return 0;
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}
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/**
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* disable_irq_nosync - disable an irq without waiting
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* @irq: Interrupt to disable
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@ -349,17 +358,7 @@ void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend)
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*/
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void disable_irq_nosync(unsigned int irq)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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unsigned long flags;
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if (!desc)
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return;
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chip_bus_lock(desc);
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raw_spin_lock_irqsave(&desc->lock, flags);
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__disable_irq(desc, irq, false);
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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chip_bus_sync_unlock(desc);
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__disable_irq_nosync(irq);
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}
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EXPORT_SYMBOL(disable_irq_nosync);
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@ -377,13 +376,7 @@ EXPORT_SYMBOL(disable_irq_nosync);
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*/
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void disable_irq(unsigned int irq)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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if (!desc)
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return;
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disable_irq_nosync(irq);
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if (desc->action)
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if (!__disable_irq_nosync(irq))
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synchronize_irq(irq);
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}
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EXPORT_SYMBOL(disable_irq);
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@ -434,21 +427,18 @@ void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume)
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*/
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void enable_irq(unsigned int irq)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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unsigned long flags;
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struct irq_desc *desc = irq_get_desc_buslock(irq, &flags);
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if (!desc)
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return;
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if (WARN(!desc->irq_data.chip,
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KERN_ERR "enable_irq before setup/request_irq: irq %u\n", irq))
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return;
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goto out;
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chip_bus_lock(desc);
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raw_spin_lock_irqsave(&desc->lock, flags);
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__enable_irq(desc, irq, false);
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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chip_bus_sync_unlock(desc);
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out:
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irq_put_desc_busunlock(desc, flags);
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}
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EXPORT_SYMBOL(enable_irq);
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@ -477,15 +467,13 @@ static int set_irq_wake_real(unsigned int irq, unsigned int on)
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*/
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int irq_set_irq_wake(unsigned int irq, unsigned int on)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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unsigned long flags;
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struct irq_desc *desc = irq_get_desc_buslock(irq, &flags);
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int ret = 0;
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/* wakeup-capable irqs can be shared between drivers that
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* don't need to have the same sleep mode behaviors.
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*/
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chip_bus_lock(desc);
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raw_spin_lock_irqsave(&desc->lock, flags);
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if (on) {
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if (desc->wake_depth++ == 0) {
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ret = set_irq_wake_real(irq, on);
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@ -505,9 +493,7 @@ int irq_set_irq_wake(unsigned int irq, unsigned int on)
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irqd_clear(&desc->irq_data, IRQD_WAKEUP_STATE);
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}
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}
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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chip_bus_sync_unlock(desc);
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irq_put_desc_busunlock(desc, flags);
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return ret;
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}
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EXPORT_SYMBOL(irq_set_irq_wake);
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@ -519,25 +505,20 @@ EXPORT_SYMBOL(irq_set_irq_wake);
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*/
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int can_request_irq(unsigned int irq, unsigned long irqflags)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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struct irqaction *action;
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unsigned long flags;
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struct irq_desc *desc = irq_get_desc_lock(irq, &flags);
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int canrequest = 0;
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if (!desc)
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return 0;
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if (!irq_settings_can_request(desc))
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return 0;
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raw_spin_lock_irqsave(&desc->lock, flags);
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action = desc->action;
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if (action)
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if (irqflags & action->flags & IRQF_SHARED)
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action = NULL;
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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return !action;
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if (irq_settings_can_request(desc)) {
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if (desc->action)
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if (irqflags & desc->action->flags & IRQF_SHARED)
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canrequest =1;
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}
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irq_put_desc_unlock(desc, flags);
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return canrequest;
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}
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int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
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