The status of the ThinkLight was not restored on resume,
make it work
Signed-off-by: Simon Danner <danner.simon@xxxxxxxxx>
Acked-by: Henrique de Moraes Holschuh <hmh@xxxxxxxxxx>
---
drivers/platform/x86/thinkpad_acpi.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 75dd651..c046909 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -4762,6 +4762,8 @@ static struct ibm_struct video_driver_data = {
* Light (thinklight) subdriver
*/
+static int light_resume_status;
+
TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
@@ -4921,11 +4923,38 @@ static int light_write(char *buf)
return light_set_status(newstatus);
}
+static void light_suspend(void)
+{
+ if (!tp_features.light || !tp_features.light_status)
+ return;
+
+ light_resume_status = light_get_status();
+
+ if (light_resume_status < 0)
+ pr_notice("failed to read light status for later restore"
+ "during resume: %d\n", light_resume_status);
+}
+
+static void light_resume(void)
+{
+ int rc;
+
+ if (!tp_features.light || !tp_features.light_status)
+ return;
+
+ rc = light_set_status(light_resume_status);
+ if (rc < 0)
+ pr_notice("failed to restore light status: %d\n", rc);
+
+}
+
static struct ibm_struct light_driver_data = {
.name = "light",
.read = light_read,
.write = light_write,
.exit = light_exit,
+ .suspend = light_suspend,
+ .resume = light_resume,
};
/*************************************************************************
--
1.8.0.2
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