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PCI/AER: Ignore non-PCIe AER error sources in aer_hest_parse() 

aer_set_firmware_first() searches the HEST for an error source descriptor
matching the specified PCI device.  It uses the apei_hest_parse() iterator
to call aer_hest_parse() for every descriptor in the HEST.

Previously, aer_hest_parse() incorrectly assumed every descriptor was for a
PCIe error source.  This patch adds a check to avoid that error.

[bhelgaas: factor check into helper, use in aer_hest_parse_aff(), changelog]
Signed-off-by: Betty Dall <betty.dall@hp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Betty Dall 2013-12-13 08:23:16 -07:00 committed by Bjorn Helgaas
parent 1c38108a08
commit 8e7f8d0b30
1 changed files with 17 additions and 8 deletions
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25
drivers/pci/pcie/aer/aerdrv_acpi.c
View File

@ -50,12 +50,24 @@ struct aer_hest_parse_info {
int firmware_first;
};
static int hest_source_is_pcie_aer(struct acpi_hest_header *hest_hdr)
{
if (hest_hdr->type == ACPI_HEST_TYPE_AER_ROOT_PORT ||
hest_hdr->type == ACPI_HEST_TYPE_AER_ENDPOINT ||
hest_hdr->type == ACPI_HEST_TYPE_AER_BRIDGE)
return 1;
return 0;
}
static int aer_hest_parse(struct acpi_hest_header *hest_hdr, void *data)
{
struct aer_hest_parse_info *info = data;
struct acpi_hest_aer_common *p;
int ff;
if (!hest_source_is_pcie_aer(hest_hdr))
return 0;
p = (struct acpi_hest_aer_common *)(hest_hdr + 1);
ff = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
if (p->flags & ACPI_HEST_GLOBAL) {
@ -104,15 +116,12 @@ static int aer_hest_parse_aff(struct acpi_hest_header *hest_hdr, void *data)
if (aer_firmware_first)
return 0;
switch (hest_hdr->type) {
case ACPI_HEST_TYPE_AER_ROOT_PORT:
case ACPI_HEST_TYPE_AER_ENDPOINT:
case ACPI_HEST_TYPE_AER_BRIDGE:
p = (struct acpi_hest_aer_common *)(hest_hdr + 1);
aer_firmware_first = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
default:
if (!hest_source_is_pcie_aer(hest_hdr))
return 0;
}
p = (struct acpi_hest_aer_common *)(hest_hdr + 1);
aer_firmware_first = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
return 0;
}
/**