Tuan Phan b1d2d3dd01 ACPI/IORT: Fix PMCG node single ID mapping handling ... [ Upstream commit 50c8ab8d9f ] An IORT PMCG node can have no ID mapping if its overflow interrupt is wire based therefore the code that parses the PMCG node can not assume the node will always have a single mapping present at index 0. Fix iort_get_id_mapping_index() by checking for an overflow interrupt and mapping count. Fixes: 24e5160493 ("ACPI/IORT: Add support for PMCG") Signed-off-by: Tuan Phan <tuanphan@os.amperecomputing.com> Reviewed-by: Hanjun Guo <guoahanjun@huawei.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Link: https://lore.kernel.org/r/1589994787-28637-1-git-send-email-tuanphan@os.amperecomputing.com Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-06-22 09:30:54 +02:00
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iort.c	ACPI/IORT: Fix PMCG node single ID mapping handling	2020-06-22 09:30:54 +02:00