1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 19cc9ae7db5a..f5d8473ea66f 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -553,6 +553,28 @@ static int eeepc_setkeycode(struct input_dev *dev, int scancode, int keycode)
         return -EINVAL;
 }
 
+static void cmsg_quirk(int cm, const char *name)
+{
+        int dummy;
+
+        /* Some BIOSes do not report cm although it is avaliable.
+           Check if cm_getv[cm] works and, if yes, assume cm should be set. */
+        if (!(ehotk->cm_supported & (1 << cm))
+            && !read_acpi_int(ehotk->handle, cm_getv[cm], &dummy)) {
+                pr_info("%s (%x) not reported by BIOS,"
+                        " enabling anyway\n", name, 1 << cm);
+                ehotk->cm_supported |= 1 << cm;
+        }
+}
+
+static void cmsg_quirks(void)
+{
+        cmsg_quirk(CM_ASL_LID, "LID");
+        cmsg_quirk(CM_ASL_TYPE, "TYPE");
+        cmsg_quirk(CM_ASL_PANELPOWER, "PANELPOWER");
+        cmsg_quirk(CM_ASL_TPD, "TPD");
+}
+
 static int eeepc_hotk_check(void)
 {
         const struct key_entry *key;
@@ -576,6 +598,7 @@ static int eeepc_hotk_check(void)
                         pr_err("Get control methods supported failed\n");
                         return -ENODEV;
                 } else {
+                        cmsg_quirks();
                         pr_info("Get control methods supported: 0x%x\n",
                                 ehotk->cm_supported);
                 }