ACPI: thinkpad-acpi: add suspend handler

Add a handler for suspend events.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index dd6fa81fa868..c6c25a460c9c 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -188,6 +188,7 @@ struct ibm_struct {
         int (*write) (char *);
         void (*exit) (void);
         void (*resume) (void);
+        void (*suspend) (pm_message_t state);
 
         struct list_head all_drivers;
 
@@ -658,6 +659,21 @@ static struct input_dev *tpacpi_inputdev;
 static struct mutex tpacpi_inputdev_send_mutex;
 static LIST_HEAD(tpacpi_all_drivers);
 
+static int tpacpi_suspend_handler(struct platform_device *pdev,
+                                  pm_message_t state)
+{
+        struct ibm_struct *ibm, *itmp;
+
+        list_for_each_entry_safe(ibm, itmp,
+                                 &tpacpi_all_drivers,
+                                 all_drivers) {
+                if (ibm->suspend)
+                        (ibm->suspend)(state);
+        }
+
+        return 0;
+}
+
 static int tpacpi_resume_handler(struct platform_device *pdev)
 {
         struct ibm_struct *ibm, *itmp;
@@ -677,6 +693,7 @@ static struct platform_driver tpacpi_pdriver = {
                 .name = TPACPI_DRVR_NAME,
                 .owner = THIS_MODULE,
         },
+        .suspend = tpacpi_suspend_handler,
         .resume = tpacpi_resume_handler,
 };