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50c8ab8d9f
linux/drivers/acpi/arm64
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Tuan Phan 50c8ab8d9f ACPI/IORT: Fix PMCG node single ID mapping handling 
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>
2020-05-20 18:43:28 +01:00
..
gtdt.c ACPI: GTDT: Put GTDT table after parsing 2020-05-18 18:08:04 +01:00
iort.c ACPI/IORT: Fix PMCG node single ID mapping handling 2020-05-20 18:43:28 +01:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00