diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-11-01 17:54:13 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-11-01 17:54:13 +0100 |
| commit | 17bb415fefedb74d2ff02656cf59e4e3ab92ee20 (patch) | |
| tree | 0ada27d370a1e2bfab1b57df9bb02a1a20371662 /kernel/irq/matrix.c | |
| parent | ceb2465c51195967f11f6507538579816ac67cb8 (diff) | |
| parent | d95bdca75b3fb41bf185efe164e05aed820081a5 (diff) | |
| download | linux-17bb415fefedb74d2ff02656cf59e4e3ab92ee20.tar.bz2 | |
Merge tag 'irqchip-fixes-5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- A couple of fixes after the IPI as IRQ patches (Kconfig, bcm2836)
- Two SiFive PLIC fixes (irq_set_affinity, hierarchy handling)
- "unmapped events" handling for the ti-sci-inta controller
- Tidying up for the irq-mst driver (static functions, Kconfig)
- Small cleanup in the Renesas irqpin driver
- STM32 exti can now handle LP timer events
Diffstat (limited to 'kernel/irq/matrix.c')
| -rw-r--r-- | kernel/irq/matrix.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/irq/matrix.c b/kernel/irq/matrix.c index 30cc217b8631..651a4ad6d711 100644 --- a/kernel/irq/matrix.c +++ b/kernel/irq/matrix.c @@ -380,6 +380,13 @@ int irq_matrix_alloc(struct irq_matrix *m, const struct cpumask *msk, unsigned int cpu, bit; struct cpumap *cm; + /* + * Not required in theory, but matrix_find_best_cpu() uses + * for_each_cpu() which ignores the cpumask on UP . + */ + if (cpumask_empty(msk)) + return -EINVAL; + cpu = matrix_find_best_cpu(m, msk); if (cpu == UINT_MAX) return -ENOSPC; |