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PCI: Check for alloc failure in pci_request_irq()
[ Upstream commit 2d9cd95 ] When kvasprintf() fails to allocate memory, it returns a NULL pointer. Return error from pci_request_irq() so we don't dereference it. [bhelgaas: commit log] Fixes: 704e895 ("PCI/irq: Add pci_request_irq() and pci_free_irq() helpers") Link: https://lore.kernel.org/r/20221121020029.3759444-1-zengheng4@huawei.com Signed-off-by: Zeng Heng <zengheng4@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sasha Levin <sashal@kernel.org>
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