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genirq/irq_sim: Check the return value of irq_sim_init() for error codes 

As discussed with Marc Zyngier: irq_sim_init() and its devres variant
should return the base of the allocated interrupt range on success rather
than 0.

Make devm_irq_sim_init() check for an error code. This is a preparatory
change for modifying irq_sim_init() itself.

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/20180304121018.640-3-brgl@bgdev.pl
This commit is contained in:
Bartosz Golaszewski 2018-03-04 13:10:17 +01:00 committed by Thomas Gleixner
parent 34a866bd45
commit 28b6afa7d4
1 changed files with 1 additions and 1 deletions
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2
kernel/irq/irq_sim.c
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@ -124,7 +124,7 @@ int devm_irq_sim_init(struct device *dev, struct irq_sim *sim,
return -ENOMEM;
rv = irq_sim_init(sim, num_irqs);
if (rv) {
if (rv < 0) {
devres_free(dr);
return rv;
}