From: Huang Ying <ying.huang@xxxxxxxxx>
erst_dbg module can not work when ERST is disabled. So disable module
loading to provide clearer information to user.
Signed-off-by: Huang Ying <ying.huang@xxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
---
drivers/acpi/apei/erst-dbg.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/acpi/apei/erst-dbg.c b/drivers/acpi/apei/erst-dbg.c
index a4cfb64..cb04aa4 100644
--- a/drivers/acpi/apei/erst-dbg.c
+++ b/drivers/acpi/apei/erst-dbg.c
@@ -213,6 +213,10 @@ static struct miscdevice erst_dbg_dev = {
static __init int erst_dbg_init(void)
{
+ if (erst_disable) {
+ pr_info(ERST_DBG_PFX "ERST support is disabled.\n");
+ return -ENODEV;
+ }
return misc_register(&erst_dbg_dev);
}
--
1.7.6.396.ge0613
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