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Diffstat (limited to 'drivers/acpi/apei/erst-dbg.c')
-rw-r--r--drivers/acpi/apei/erst-dbg.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/acpi/apei/erst-dbg.c b/drivers/acpi/apei/erst-dbg.c
index a4cfb64c86a1..903549df809b 100644
--- a/drivers/acpi/apei/erst-dbg.c
+++ b/drivers/acpi/apei/erst-dbg.c
@@ -33,7 +33,7 @@
#define ERST_DBG_PFX "ERST DBG: "
-#define ERST_DBG_RECORD_LEN_MAX 4096
+#define ERST_DBG_RECORD_LEN_MAX 0x4000
static void *erst_dbg_buf;
static unsigned int erst_dbg_buf_len;
@@ -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);
}