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| author |   Thomas Gleixner <tglx@linutronix.de> | 2021-07-09 15:35:13 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-07-09 15:35:13 +0200 |
| commit | 48400483565f0b7e633cbef94b139ff295b59de3 (patch) | |
| tree | 485f5563bf2f0eafcf4d88c29d1aac265e51436b /drivers | |
| parent | Merge tag 'drm-next-2021-07-08-1' of git://anongit.freedesktop.org/drm/drm (diff) | |
| parent | irqchip/mips: Fix RCU violation when using irqdomain lookup on interrupt entry (diff) | |
| download | linux-dev-48400483565f0b7e633cbef94b139ff295b59de3.tar.xz linux-dev-48400483565f0b7e633cbef94b139ff295b59de3.zip | |
Merge tag 'irqchip-fixes-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- Fix a MIPS bug where irqdomain loopkups could occur in a context
where RCU is not allowed
- Fix a documentation bug for handle_domain_irq
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/irqchip/irq-mips-cpu.c | 10 | ||||
| -rw-r--r-- | drivers/irqchip/irq-mips-gic.c | 8 | ||||
| -rw-r--r-- | drivers/irqchip/irq-pic32-evic.c | 5 |
3 files changed, 12 insertions, 11 deletions
diff --git a/drivers/irqchip/irq-mips-cpu.c b/drivers/irqchip/irq-mips-cpu.c index 0bbb0b2d0dd5..0c7ae71a0af0 100644 --- a/drivers/irqchip/irq-mips-cpu.c +++ b/drivers/irqchip/irq-mips-cpu.c @@ -127,7 +127,6 @@ static struct irq_chip mips_mt_cpu_irq_controller = { asmlinkage void __weak plat_irq_dispatch(void) { unsigned long pending = read_c0_cause() & read_c0_status() & ST0_IM; - unsigned int virq; int irq; if (!pending) { @@ -137,12 +136,15 @@ asmlinkage void __weak plat_irq_dispatch(void) pending >>= CAUSEB_IP; while (pending) { + struct irq_domain *d; + irq = fls(pending) - 1; if (IS_ENABLED(CONFIG_GENERIC_IRQ_IPI) && irq < 2) - virq = irq_linear_revmap(ipi_domain, irq); + d = ipi_domain; else - virq = irq_linear_revmap(irq_domain, irq); - do_IRQ(virq); + d = irq_domain; + + do_domain_IRQ(d, irq); pending &= ~BIT(irq); } } diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c index b146e069bf5b..54c7092cc61d 100644 --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -169,8 +169,8 @@ static void gic_handle_shared_int(bool chained) generic_handle_domain_irq(gic_irq_domain, GIC_SHARED_TO_HWIRQ(intr)); else - do_IRQ(irq_find_mapping(gic_irq_domain, - GIC_SHARED_TO_HWIRQ(intr))); + do_domain_IRQ(gic_irq_domain, + GIC_SHARED_TO_HWIRQ(intr)); } } @@ -320,8 +320,8 @@ static void gic_handle_local_int(bool chained) generic_handle_domain_irq(gic_irq_domain, GIC_LOCAL_TO_HWIRQ(intr)); else - do_IRQ(irq_find_mapping(gic_irq_domain, - GIC_LOCAL_TO_HWIRQ(intr))); + do_domain_IRQ(gic_irq_domain, + GIC_LOCAL_TO_HWIRQ(intr)); } } diff --git a/drivers/irqchip/irq-pic32-evic.c b/drivers/irqchip/irq-pic32-evic.c index 34c4b4ffacd1..1d9bb28d13e5 100644 --- a/drivers/irqchip/irq-pic32-evic.c +++ b/drivers/irqchip/irq-pic32-evic.c @@ -42,11 +42,10 @@ static void __iomem *evic_base; asmlinkage void __weak plat_irq_dispatch(void) { - unsigned int irq, hwirq; + unsigned int hwirq; hwirq = readl(evic_base + REG_INTSTAT) & 0xFF; - irq = irq_linear_revmap(evic_irq_domain, hwirq); - do_IRQ(irq); + do_domain_IRQ(evic_irq_domain, hwirq); } static struct evic_chip_data *irqd_to_priv(struct irq_data *data) |