diff mbox

[02/17] ACPI, APEI, ERST, Prevent erst_dbg from loading if ERST is disabled

Message ID 1310534068-30547-3-git-send-email-ying.huang@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Huang, Ying July 13, 2011, 5:14 a.m. UTC 
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@intel.com>
---
 drivers/acpi/apei/erst-dbg.c |    4 ++++
 1 file changed, 4 insertions(+)

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Comments

Len Brown July 14, 2011, 3:30 a.m. UTC | #1 
applied

thanks,
Len Brown, Intel Open Source Technology Center

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diff mbox

Patch

--- 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);
 }