Merge tag 'irq_urgent_for_v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more irqchip fixes from Borislav Petkov:
"More irqchip fixes for 6.0 from Marc Zyngier. Stuff got left hanging
due to the whole Plumbers and vacations commotion.
- A couple of configuration fixes for the recently merged Loongarch
drivers
- A fix to avoid dynamic allocation of a cpumask which was causing
issues with PREEMPT_RT and the GICv3 ITS
- A tightening of an error check in the stm32 exti driver"
* tag 'irq_urgent_for_v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/loongson-pch-lpc: Add dependence on LoongArch
irqchip: Select downstream irqchip drivers for LoongArch CPU
irqchip/gic-v3-its: Remove cpumask_var_t allocation
irqchip/stm32-exti: Remove check on always false condition
diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index 66b9fa4..eb5ea5b 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -561,6 +561,11 @@
select GENERIC_IRQ_CHIP
select IRQ_DOMAIN
select GENERIC_IRQ_EFFECTIVE_AFF_MASK
+ select LOONGSON_LIOINTC
+ select LOONGSON_EIOINTC
+ select LOONGSON_PCH_PIC
+ select LOONGSON_PCH_MSI
+ select LOONGSON_PCH_LPC
help
Support for the LoongArch CPU Interrupt Controller. For details of
irq chip hierarchy on LoongArch platforms please read the document
@@ -623,8 +628,9 @@
config LOONGSON_PCH_LPC
bool "Loongson PCH LPC Controller"
+ depends on LOONGARCH
depends on MACH_LOONGSON64
- default (MACH_LOONGSON64 && LOONGARCH)
+ default MACH_LOONGSON64
select IRQ_DOMAIN_HIERARCHY
help
Support for the Loongson PCH LPC Controller.
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 5ff09de..beead1a 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -1574,13 +1574,15 @@ static int its_select_cpu(struct irq_data *d,
const struct cpumask *aff_mask)
{
struct its_device *its_dev = irq_data_get_irq_chip_data(d);
- cpumask_var_t tmpmask;
+ static DEFINE_RAW_SPINLOCK(tmpmask_lock);
+ static struct cpumask __tmpmask;
+ struct cpumask *tmpmask;
+ unsigned long flags;
int cpu, node;
-
- if (!alloc_cpumask_var(&tmpmask, GFP_ATOMIC))
- return -ENOMEM;
-
node = its_dev->its->numa_node;
+ tmpmask = &__tmpmask;
+
+ raw_spin_lock_irqsave(&tmpmask_lock, flags);
if (!irqd_affinity_is_managed(d)) {
/* First try the NUMA node */
@@ -1634,7 +1636,7 @@ static int its_select_cpu(struct irq_data *d,
cpu = cpumask_pick_least_loaded(d, tmpmask);
}
out:
- free_cpumask_var(tmpmask);
+ raw_spin_unlock_irqrestore(&tmpmask_lock, flags);
pr_debug("IRQ%d -> %*pbl CPU%d\n", d->irq, cpumask_pr_args(aff_mask), cpu);
return cpu;
diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c
index a73763d..6a3f749 100644
--- a/drivers/irqchip/irq-stm32-exti.c
+++ b/drivers/irqchip/irq-stm32-exti.c
@@ -716,7 +716,7 @@ static int stm32_exti_h_domain_alloc(struct irq_domain *dm,
irq_domain_set_hwirq_and_chip(dm, virq, hwirq, chip, chip_data);
- if (!host_data->drv_data || !host_data->drv_data->desc_irqs)
+ if (!host_data->drv_data->desc_irqs)
return -EINVAL;
desc_irq = host_data->drv_data->desc_irqs[hwirq];
