Re: 174cc7187e6f ACPICA: Tables: Back port acpi_get_table_with_size() and early_acpi_os_unmap_memory() from Linux kernel

From: Rafael J. Wysocki <redacted>
Subject: [PATCH] IOMMU / AMD: Fix error code path in early_amd_iommu_init()

Prevent early_amd_iommu_init() from leaking memory mapped via
acpi_get_table() if check_ivrs_checksum() returns an error.

Signed-off-by: Rafael J. Wysocki <redacted>
---
 drivers/iommu/amd_iommu_init.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-pm/drivers/iommu/amd_iommu_init.c
===================================================================

--- linux-pm.orig/drivers/iommu/amd_iommu_init.c
+++ linux-pm/drivers/iommu/amd_iommu_init.c

@@ -2230,7 +2230,7 @@ static int __init early_amd_iommu_init(v
 	 */
 	ret = check_ivrs_checksum(ivrs_base);
 	if (ret)
-		return ret;
+		goto out;
 
 	amd_iommu_target_ivhd_type = get_highest_supported_ivhd_type(ivrs_base);
 	DUMP_printk("Using IVHD type %#x\n", amd_iommu_target_ivhd_type);