Commit 090688fa authored by Hanjun Guo's avatar Hanjun Guo Committed by Bjorn Helgaas
Browse files

PCI: Release IVRS table in AMD ACS quirk 

The acpi_get_table() should be coupled with acpi_put_table() if the mapped
table is not used at runtime to release the table mapping.

In pci_quirk_amd_sb_acs(), IVRS table is just used for checking AMD IOMMU
is supported, not used at runtime, so put the table after using it.

Fixes: 15b100df ("PCI: Claim ACS support for AMD southbridge devices")
Link: https://lore.kernel.org/r/1595411068-15440-1-git-send-email-guohanjun@huawei.com


Signed-off-by: default avatarHanjun Guo <guohanjun@huawei.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 45beb31d

drivers/pci/quirks.c

+2 −0
Original line number Diff line number Diff line
@@ -4409,6 +4409,8 @@ static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags) 
	if (ACPI_FAILURE(status))

		return -ENODEV;



	acpi_put_table(header);



	/* Filter out flags not applicable to multifunction */

	acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT);