1 files changed, 11 insertions, 1 deletions

diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c
index abda3786a5d7..181bc2f7bb74 100644
--- a/drivers/acpi/apei/hest.c
+++ b/drivers/acpi/apei/hest.c
@@ -139,13 +139,23 @@ static int __init hest_parse_ghes(struct acpi_hest_header *hest_hdr, void *data)
 {
         struct platform_device *ghes_dev;
         struct ghes_arr *ghes_arr = data;
-        int rc;
+        int rc, i;
 
         if (hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR)
                 return 0;
 
         if (!((struct acpi_hest_generic *)hest_hdr)->enabled)
                 return 0;
+        for (i = 0; i < ghes_arr->count; i++) {
+                struct acpi_hest_header *hdr;
+                ghes_dev = ghes_arr->ghes_devs[i];
+                hdr = *(struct acpi_hest_header **)ghes_dev->dev.platform_data;
+                if (hdr->source_id == hest_hdr->source_id) {
+                        pr_warning(FW_WARN HEST_PFX "Duplicated hardware error source ID: %d.\n",
+                                   hdr->source_id);
+                        return -EIO;
+                }
+        }
         ghes_dev = platform_device_alloc("GHES", hest_hdr->source_id);
         if (!ghes_dev)
                 return -ENOMEM;