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genirq: Simplify the checks for irq_set_percpu_devid_partition()

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Since whether desc is NULL or desc->percpu_enabled is true, it returns
-EINVAL, check them together, and assign desc->percpu_affinity using a
ternary to simplify the code.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240417085356.3785381-1-ruanjinjie@huawei.com
This commit is contained in:
Jinjie Ruan 2024-04-17 16:53:56 +08:00 committed by Thomas Gleixner
parent 35d77eb7b9
commit bb58c1baa5
1 changed files with 2 additions and 8 deletions
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10
kernel/irq/irqdesc.c
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@ -911,10 +911,7 @@ int irq_set_percpu_devid_partition(unsigned int irq,
{
struct irq_desc *desc = irq_to_desc(irq);
if (!desc)
return -EINVAL;
if (desc->percpu_enabled)
if (!desc || desc->percpu_enabled)
return -EINVAL;
desc->percpu_enabled = kzalloc(sizeof(*desc->percpu_enabled), GFP_KERNEL);
@ -922,10 +919,7 @@ int irq_set_percpu_devid_partition(unsigned int irq,
if (!desc->percpu_enabled)
return -ENOMEM;
if (affinity)
desc->percpu_affinity = affinity;
else
desc->percpu_affinity = cpu_possible_mask;
desc->percpu_affinity = affinity ? : cpu_possible_mask;
irq_set_percpu_devid_flags(irq);
return 0;