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genirq/msi: Prevent overwriting domain name
Prevent overwriting an already assigned domain name. Remove the extra check for chip->name, because if domain->name is NULL overwriting it with NULL is not a problem. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Keith Busch <keith.busch@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Link: http://lkml.kernel.org/r/20170619235443.510684976@linutronix.de
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1 changed files with 2 additions and 1 deletions
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@ -274,7 +274,8 @@ struct irq_domain *msi_create_irq_domain(struct fwnode_handle *fwnode,
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domain = irq_domain_create_hierarchy(parent, IRQ_DOMAIN_FLAG_MSI, 0,
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fwnode, &msi_domain_ops, info);
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if (domain && info->chip && info->chip->name)
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if (domain && !domain->name && info->chip)
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domain->name = info->chip->name;
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return domain;
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