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| author | Dawei Li <dawei.li@shingroup.cn> | 2024-04-16 16:54:49 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-04-24 21:23:49 +0200 |
| commit | 6a9a52f74e3b82ff3f5398810c1b23ad497e2df5 (patch) | |
| tree | cc83110505e3cd356c969b09821a0bc0fd872a87 /drivers/irqchip | |
| parent | cdc66553c4130735f0a2db943a5259e54ff1597a (diff) | |
| download | linux-stable-6a9a52f74e3b82ff3f5398810c1b23ad497e2df5.tar.gz linux-stable-6a9a52f74e3b82ff3f5398810c1b23ad497e2df5.tar.bz2 linux-stable-6a9a52f74e3b82ff3f5398810c1b23ad497e2df5.zip | |
irqchip/irq-bcm6345-l1: Avoid explicit cpumask allocation on stack
In general it's preferable to avoid placing cpumasks on the stack, as
for large values of NR_CPUS these can consume significant amounts of
stack space and make stack overflows more likely.
Use cpumask_first_and_and() to avoid the need for a temporary cpumask on
the stack.
Signed-off-by: Dawei Li <dawei.li@shingroup.cn>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240416085454.3547175-3-dawei.li@shingroup.cn
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-bcm6345-l1.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/irqchip/irq-bcm6345-l1.c b/drivers/irqchip/irq-bcm6345-l1.c index eb02d203c963..90daa274ef23 100644 --- a/drivers/irqchip/irq-bcm6345-l1.c +++ b/drivers/irqchip/irq-bcm6345-l1.c @@ -192,14 +192,10 @@ static int bcm6345_l1_set_affinity(struct irq_data *d, u32 mask = BIT(d->hwirq % IRQS_PER_WORD); unsigned int old_cpu = cpu_for_irq(intc, d); unsigned int new_cpu; - struct cpumask valid; unsigned long flags; bool enabled; - if (!cpumask_and(&valid, &intc->cpumask, dest)) - return -EINVAL; - - new_cpu = cpumask_any_and(&valid, cpu_online_mask); + new_cpu = cpumask_first_and_and(&intc->cpumask, dest, cpu_online_mask); if (new_cpu >= nr_cpu_ids) return -EINVAL; |