Input: i8042 - make sure Dritek quirk is invoked at resume

Also do not fail i8042 entire initialization if enabling dritek extension
fails.

Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 25 insertions, 8 deletions

diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 65a74cfc187b..592ff55b62d0 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -885,6 +885,20 @@ static long i8042_panic_blink(long count)
 
 #undef DELAY
 
+#ifdef CONFIG_X86
+static void i8042_dritek_enable(void)
+{
+        char param = 0x90;
+        int error;
+
+        error = i8042_command(&param, 0x1059);
+        if (error)
+                printk(KERN_WARNING
+                        "Failed to enable DRITEK extension: %d\n",
+                        error);
+}
+#endif
+
 #ifdef CONFIG_PM
 /*
  * Here we try to restore the original BIOS settings. We only want to
@@ -942,6 +956,12 @@ static int i8042_resume(struct platform_device *dev)
                 return -EIO;
         }
 
+
+#ifdef CONFIG_X86
+        if (i8042_dritek)
+                i8042_dritek_enable();
+#endif
+
         if (i8042_mux_present) {
                 if (i8042_set_mux_mode(1, NULL) || i8042_enable_mux_ports())
                         printk(KERN_WARNING
@@ -1160,6 +1180,11 @@ static int __devinit i8042_probe(struct platform_device *dev)
         if (error)
                 return error;
 
+#ifdef CONFIG_X86
+        if (i8042_dritek)
+                i8042_dritek_enable();
+#endif
+
         if (!i8042_noaux) {
                 error = i8042_setup_aux();
                 if (error && error != -ENODEV && error != -EBUSY)
@@ -1171,14 +1196,6 @@ static int __devinit i8042_probe(struct platform_device *dev)
                 if (error)
                         goto out_fail;
         }
-#ifdef CONFIG_X86
-        if (i8042_dritek) {
-                char param = 0x90;
-                error = i8042_command(&param, 0x1059);
-                if (error)
-                        goto out_fail;
-        }
-#endif
 /*
  * Ok, everything is ready, let's register all serio ports
  */