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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2011-01-16 20:44:22 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-16 11:56:26 -0800 |
| commit | d3072e6a7e9bf7aca200370317f8e297be360b17 (patch) | |
| tree | aaeae900e1942aef892276b4ddb5c85e4882745a /drivers | |
| parent | fc8fe1e992ae0326a88edbe4d6793e840bbdd4ff (diff) | |
| download | kernel-common-d3072e6a7e9bf7aca200370317f8e297be360b17.tar.gz kernel-common-d3072e6a7e9bf7aca200370317f8e297be360b17.tar.bz2 kernel-common-d3072e6a7e9bf7aca200370317f8e297be360b17.zip | |
ACPI: Fix boot problem related to APEI with acpi_disabled set
Commit 415e12b23792 ("PCI/ACPI: Request _OSC control once for each root
bridge (v3)") put the acpi_hest_init() call in acpi_pci_root_init() into
a wrong place, presumably because the author confused acpi_pci_disabled
with acpi_disabled. Bring the code ordering in acpi_pci_root_init()
back to sanity.
Additionally, make sure that hest_disable is set when acpi_disabled is
set, which is going to prevent acpi_hest_parse(), that still may be
executed for acpi_disabled=1 through aer_acpi_firmware_first(), from
crashing because of uninitialized hest_tab.
Reported-and-tested-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/apei/hest.c | 6 | ||||
| -rw-r--r-- | drivers/acpi/pci_root.c | 4 |
2 files changed, 5 insertions, 5 deletions
diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c index 4ee58e72b730..abda3786a5d7 100644 --- a/drivers/acpi/apei/hest.c +++ b/drivers/acpi/apei/hest.c @@ -201,14 +201,14 @@ void __init acpi_hest_init(void) int rc = -ENODEV; unsigned int ghes_count = 0; - if (acpi_disabled) - return; - if (hest_disable) { pr_info(HEST_PFX "Table parsing disabled.\n"); return; } + if (acpi_disabled) + goto err; + status = acpi_get_table(ACPI_SIG_HEST, 0, (struct acpi_table_header **)&hest_tab); if (status == AE_NOT_FOUND) { diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index d9766797cd98..85249395623b 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -633,11 +633,11 @@ static int acpi_pci_root_remove(struct acpi_device *device, int type) static int __init acpi_pci_root_init(void) { + acpi_hest_init(); + if (acpi_pci_disabled) return 0; - acpi_hest_init(); - pci_acpi_crs_quirks(); if (acpi_bus_register_driver(&acpi_pci_root_driver) < 0) return -ENODEV; |