kernel.git/drivers/acpi/arm64, branch linux-5.4.y

acpi/arm64: Adjust error handling procedure in gtdt_parse_timer_block()

2024-12-14T18:44:22Z

[ Upstream commit 1a9de2f6fda69d5f105dd8af776856a66abdaa64 ] In case of error in gtdt_parse_timer_block() invalid 'gtdt_frame' will be used in 'do {} while (i-- >= 0 && gtdt_frame--);' statement block because do{} block will be executed even if 'i == 0'. Adjust error handling procedure by replacing 'i-- >= 0' with 'i-- > 0'. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: a712c3ed9b8a ("acpi/arm64: Add memory-mapped timer support in GTDT driver") Signed-off-by: Aleksandr Mishin Acked-by: Hanjun Guo Acked-by: Sudeep Holla Acked-by: Aleksandr Mishin Link: https://lore.kernel.org/r/20240827101239.22020-1-amishin@t-argos.ru Signed-off-by: Catalin Marinas Signed-off-by: Sasha Levin

ACPI/IORT: Make iort_msi_map_rid() PCI agnostic

2023-12-13T17:18:10Z

[ Upstream commit 39c3cf566ceafa7c1ae331a5f26fbb685d670001 ] There is nothing PCI specific in iort_msi_map_rid(). Rename the function using a bus protocol agnostic name, iort_msi_map_id(), and convert current callers to it. Signed-off-by: Lorenzo Pieralisi Acked-by: Bjorn Helgaas Cc: Will Deacon Cc: Hanjun Guo Cc: Bjorn Helgaas Cc: Sudeep Holla Cc: Robin Murphy Cc: "Rafael J. Wysocki" Link: https://lore.kernel.org/r/20200619082013.13661-4-lorenzo.pieralisi@arm.com Signed-off-by: Catalin Marinas Stable-dep-of: d79972789d17 ("of: dynamic: Fix of_reconfig_get_state_change() return value documentation") Signed-off-by: Sasha Levin

ACPI/IORT: Make iort_get_device_domain IRQ domain agnostic

2023-12-13T17:18:10Z

[ Upstream commit d1718a1b7a86743b9c517bf9521695ba909c734f ] iort_get_device_domain() is PCI specific but it need not be, since it can be used to retrieve IRQ domain nexus of any kind by adding an irq_domain_bus_token input to it. Make it PCI agnostic by also renaming the requestor ID input to a more generic ID name. Signed-off-by: Lorenzo Pieralisi Acked-by: Bjorn Helgaas # pci/msi.c Cc: Will Deacon Cc: Hanjun Guo Cc: Bjorn Helgaas Cc: Sudeep Holla Cc: Robin Murphy Cc: "Rafael J. Wysocki" Link: https://lore.kernel.org/r/20200619082013.13661-3-lorenzo.pieralisi@arm.com Signed-off-by: Catalin Marinas Stable-dep-of: d79972789d17 ("of: dynamic: Fix of_reconfig_get_state_change() return value documentation") Signed-off-by: Sasha Levin

perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09

2023-09-23T09:00:03Z

[ Upstream commit 0242737dc4eb9f6e9a5ea594b3f93efa0b12f28d ] Some HiSilicon SMMU PMCG suffers the erratum 162001900 that the PMU disable control sometimes fail to disable the counters. This will lead to error or inaccurate data since before we enable the counters the counter's still counting for the event used in last perf session. This patch tries to fix this by hardening the global disable process. Before disable the PMU, writing an invalid event type (0xffff) to focibly stop the counters. Correspondingly restore each events on pmu::pmu_enable(). Signed-off-by: Yicong Yang Link: https://lore.kernel.org/r/20230814124012.58013-1-yangyicong@huawei.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin

ACPI/IORT: Check node revision for PMCG resources

2022-02-16T11:52:50Z

commit da5fb9e1ad3fbf632dce735f1bdad257ca528499 upstream. The original version of the IORT PMCG definition had an oversight wherein there was no way to describe the second register page for an implementation using the recommended RELOC_CTRS feature. Although the spec was fixed, and the final patches merged to ACPICA and Linux written against the new version, it seems that some old firmware based on the original revision has survived and turned up in the wild. Add a check for the original PMCG definition, and avoid filling in the second memory resource with nonsense if so. Otherwise it is likely that something horrible will happen when the PMCG driver attempts to probe. Reported-by: Michael Petlan Fixes: 24e516049360 ("ACPI/IORT: Add support for PMCG") Cc: # 5.2.x Signed-off-by: Robin Murphy Acked-by: Lorenzo Pieralisi Link: https://lore.kernel.org/r/75628ae41c257fb73588f7bf1c4459160e04be2b.1643916258.git.robin.murphy@arm.com Signed-off-by: Catalin Marinas Signed-off-by: Greg Kroah-Hartman

acpi/arm64: fix next_platform_timer() section mismatch error

2021-10-20T09:40:17Z

commit 596143e3aec35c93508d6b7a05ddc999ee209b61 upstream. Fix modpost Section mismatch error in next_platform_timer(). [...] WARNING: modpost: vmlinux.o(.text.unlikely+0x26e60): Section mismatch in reference from the function next_platform_timer() to the variable .init.data:acpi_gtdt_desc The function next_platform_timer() references the variable __initdata acpi_gtdt_desc. This is often because next_platform_timer lacks a __initdata annotation or the annotation of acpi_gtdt_desc is wrong. WARNING: modpost: vmlinux.o(.text.unlikely+0x26e64): Section mismatch in reference from the function next_platform_timer() to the variable .init.data:acpi_gtdt_desc The function next_platform_timer() references the variable __initdata acpi_gtdt_desc. This is often because next_platform_timer lacks a __initdata annotation or the annotation of acpi_gtdt_desc is wrong. ERROR: modpost: Section mismatches detected. Set CONFIG_SECTION_MISMATCH_WARN_ONLY=y to allow them. make[1]: *** [scripts/Makefile.modpost:59: vmlinux.symvers] Error 1 make[1]: *** Deleting file 'vmlinux.symvers' make: *** [Makefile:1176: vmlinux] Error 2 [...] Fixes: a712c3ed9b8a ("acpi/arm64: Add memory-mapped timer support in GTDT driver") Signed-off-by: Jackie Liu Acked-by: Hanjun Guo Link: https://lore.kernel.org/r/20210823092526.2407526-1-liu.yun@linux.dev Signed-off-by: Catalin Marinas Signed-off-by: Greg Kroah-Hartman

ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure

2021-05-11T12:04:14Z

commit 1ecd5b129252249b9bc03d7645a7bda512747277 upstream. When failing the driver probe because of invalid firmware properties, the GTDT driver unmaps the interrupt that it mapped earlier. However, it never checks whether the mapping of the interrupt actially succeeded. Even more, should the firmware report an illegal interrupt number that overlaps with the GIC SGI range, this can result in an IPI being unmapped, and subsequent fireworks (as reported by Dann Frazier). Rework the driver to have a slightly saner behaviour and actually check whether the interrupt has been mapped before unmapping things. Reported-by: dann frazier Fixes: ca9ae5ec4ef0 ("acpi/arm64: Add SBSA Generic Watchdog support in GTDT driver") Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/YH87dtTfwYgavusz@xps13.dannf Cc: Cc: Fu Wei Reviewed-by: Sudeep Holla Tested-by: dann frazier Tested-by: Hanjun Guo Reviewed-by: Hanjun Guo Reviewed-by: Lorenzo Pieralisi Link: https://lore.kernel.org/r/20210421164317.1718831-2-maz@kernel.org Signed-off-by: Catalin Marinas Signed-off-by: Greg Kroah-Hartman

ACPI/IORT: Fix PMCG node single ID mapping handling

2020-06-22T07:30:54Z

[ Upstream commit 50c8ab8d9fbf5b18d5162a797ca26568afc0af1a ] 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: 24e516049360 ("ACPI/IORT: Add support for PMCG") Signed-off-by: Tuan Phan Reviewed-by: Hanjun Guo Acked-by: Lorenzo Pieralisi Link: https://lore.kernel.org/r/1589994787-28637-1-git-send-email-tuanphan@os.amperecomputing.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin

ACPI/IORT: Rename arm_smmu_v3_set_proximity() 'node' local variable

2019-08-05T10:06:34Z

Commit 36a2ba07757d ("ACPI/IORT: Reject platform device creation on NUMA node mapping failure") introduced a local variable 'node' in arm_smmu_v3_set_proximity() that shadows the struct acpi_iort_node pointer function parameter. Execution was unaffected but it is prone to errors and can lead to subtle bugs. Rename the local variable to prevent any issue. Reviewed-by: Hanjun Guo Reported-by: Will Deacon Signed-off-by: Lorenzo Pieralisi Cc: Will Deacon Cc: Hanjun Guo Cc: Sudeep Holla Cc: Catalin Marinas Cc: Robin Murphy Cc: Kefeng Wang Signed-off-by: Will Deacon

ACPI/IORT: Fix off-by-one check in iort_dev_find_its_id()

2019-07-23T14:45:46Z

Static analysis identified that index comparison against ITS entries in iort_dev_find_its_id() is off by one. Update the comparison condition and clarify the resulting error message. Fixes: 4bf2efd26d76 ("ACPI: Add new IORT functions to support MSI domain handling") Link: https://lore.kernel.org/linux-arm-kernel/20190613065410.GB16334@mwanda/ Reviewed-by: Hanjun Guo Reported-by: Dan Carpenter Signed-off-by: Lorenzo Pieralisi Cc: Dan Carpenter Cc: Will Deacon Cc: Hanjun Guo Cc: Sudeep Holla Cc: Catalin Marinas Cc: Robin Murphy Signed-off-by: Will Deacon