From 9368aa1882ac7178adcd936cee5f0899dbf76dc4 Mon Sep 17 00:00:00 2001 From: Li Yang Date: Fri, 19 May 2023 15:12:49 -0500 Subject: [PATCH] APEI: GHES: correctly return NULL for ghes_get_devices() Since 315bada690e0 ("EDAC: Check for GHES preference in the chipset-specific EDAC drivers"), vendor specific EDAC driver will not probe correctly when CONFIG_ACPI_APEI_GHES is enabled but no GHES device is present. Make ghes_get_devices() return NULL when the GHES device list is empty to fix the problem. Fixes: 9057a3f7ac36 ("EDAC/ghes: Prepare to make ghes_edac a proper module") Signed-off-by: Li Yang Reviewed-by: Tony Luck Signed-off-by: Rafael J. Wysocki --- drivers/acpi/apei/ghes.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index a4148a7d3afe0..ef59d6ea16da0 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -1542,6 +1542,8 @@ struct list_head *ghes_get_devices(void) pr_warn_once("Force-loading ghes_edac on an unsupported platform. You're on your own!\n"); } + } else if (list_empty(&ghes_devs)) { + return NULL; } return &ghes_devs; -- 2.30.2