From: Herve Codina herve.codina@bootlin.com
mainline inclusion from mainline-v6.11-rc1 commit 6ce3e98184b625d2870991880bf9586ded7ea7f9 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAF0D0
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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fwnode_handle_get(fwnode) is called when a domain is created with fwnode passed as a function parameter. fwnode_handle_put(domain->fwnode) is called when the domain is destroyed but during the creation a path exists that does not set domain->fwnode.
If this path is taken, the fwnode get will never be put.
To avoid the unbalanced get and put, set domain->fwnode unconditionally.
Fixes: d59f6617eef0 ("genirq: Allow fwnode to carry name information only") Signed-off-by: Herve Codina herve.codina@bootlin.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240614173232.1184015-4-herve.codina@bootlin.com Conflicts: kernel/irq/irqdomain.c [74c782cff77b ("driver core: fw_devlink: Handle suppliers that don't use driver core") 67a4e1a3bf7c ("irqdomain: Use return value of strreplace()") ed1054a02aa2 ("irqdomain: Mark fwnodes when their irqdomain is added/removed") these 3 patchs didn't backport to 5.10 which leads context conflicts. Fix context conflicts.] Signed-off-by: Lin Yujun linyujun809@huawei.com --- kernel/irq/irqdomain.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index cab2d9a193e3..42bcb405a1cb 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -151,7 +151,6 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size, switch (fwid->type) { case IRQCHIP_FWNODE_NAMED: case IRQCHIP_FWNODE_NAMED_ID: - domain->fwnode = fwnode; domain->name = kstrdup(fwid->name, GFP_KERNEL); if (!domain->name) { kfree(domain); @@ -160,7 +159,6 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size, domain->flags |= IRQ_DOMAIN_NAME_ALLOCATED; break; default: - domain->fwnode = fwnode; domain->name = fwid->name; break; } @@ -182,7 +180,6 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size, strreplace(name, '/', ':');
domain->name = name; - domain->fwnode = fwnode; domain->flags |= IRQ_DOMAIN_NAME_ALLOCATED; }
@@ -198,7 +195,7 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size, domain->flags |= IRQ_DOMAIN_NAME_ALLOCATED; }
- fwnode_handle_get(fwnode); + domain->fwnode = fwnode_handle_get(fwnode);
/* Fill structure */ INIT_RADIX_TREE(&domain->revmap_tree, GFP_KERNEL);