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Merge tag 'irq-urgent-2020-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull irq fixes from Ingo Molnar:
 "Fix a recent IRQ affinities regression, add in a missing debugfs
  printout that helps the debugging of IRQ affinity logic bugs, and fix
  a memory leak"

* tag 'irq-urgent-2020-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq/debugfs: Add missing irqchip flags
  genirq/affinity: Make affinity setting if activated opt-in
  irqdomain/treewide: Free firmware node after domain removal
This commit is contained in:
Linus Torvalds
2020-08-03 14:21:52 -07:00
parent 145ff1ec09 aa251fc5b9
commit 3b4b84b2ea
10 changed files with 56 additions and 2 deletions
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5
kernel/irq/debugfs.c
View File

@@ -112,6 +112,7 @@ static const struct irq_bit_descr irqdata_states[] = {
BIT_MASK_DESCR(IRQD_AFFINITY_SET),
BIT_MASK_DESCR(IRQD_SETAFFINITY_PENDING),
BIT_MASK_DESCR(IRQD_AFFINITY_MANAGED),
BIT_MASK_DESCR(IRQD_AFFINITY_ON_ACTIVATE),
BIT_MASK_DESCR(IRQD_MANAGED_SHUTDOWN),
BIT_MASK_DESCR(IRQD_CAN_RESERVE),
BIT_MASK_DESCR(IRQD_MSI_NOMASK_QUIRK),
@@ -120,6 +121,10 @@ static const struct irq_bit_descr irqdata_states[] = {
BIT_MASK_DESCR(IRQD_WAKEUP_STATE),
BIT_MASK_DESCR(IRQD_WAKEUP_ARMED),
BIT_MASK_DESCR(IRQD_DEFAULT_TRIGGER_SET),
BIT_MASK_DESCR(IRQD_HANDLE_ENFORCE_IRQCTX),
};
static const struct irq_bit_descr irqdesc_states[] = {

6
kernel/irq/manage.c
View File

@@ -320,12 +320,16 @@ static bool irq_set_affinity_deactivated(struct irq_data *data,
struct irq_desc *desc = irq_data_to_desc(data);
/*
* Handle irq chips which can handle affinity only in activated
* state correctly
*
* If the interrupt is not yet activated, just store the affinity
* mask and do not call the chip driver at all. On activation the
* driver has to make sure anyway that the interrupt is in a
* useable state so startup works.
*/
if (!IS_ENABLED(CONFIG_IRQ_DOMAIN_HIERARCHY) || irqd_is_activated(data))
if (!IS_ENABLED(CONFIG_IRQ_DOMAIN_HIERARCHY) ||
irqd_is_activated(data) || !irqd_affinity_on_activate(data))
return false;
cpumask_copy(desc->irq_common_data.affinity, mask);