From: Li Yang <leoyang.li@nxp.com> mainline inclusion from mainline-v6.5-rc1 commit 9368aa1882ac7178adcd936cee5f0899dbf76dc4 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8DQUX CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... ---------------------------------------------------------------------- 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 <leoyang.li@nxp.com> Reviewed-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Qian Zou <zouqian4@huawei.com> --- 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 415c3ca59..f4ae71b8f 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -1568,6 +1568,8 @@ 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; -- 2.33.0