1 files changed, 18 insertions, 7 deletions

diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index 65dc41540c62..45940f31fe9e 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -166,6 +166,7 @@ struct fujitsu_hotkey_t {
         struct platform_device *pf_device;
         struct kfifo *fifo;
         spinlock_t fifo_lock;
+        int rfkill_supported;
         int rfkill_state;
         int logolamp_registered;
         int kblamps_registered;
@@ -526,7 +527,7 @@ static ssize_t
 show_lid_state(struct device *dev,
                         struct device_attribute *attr, char *buf)
 {
-        if (fujitsu_hotkey->rfkill_state == UNSUPPORTED_CMD)
+        if (!(fujitsu_hotkey->rfkill_supported & 0x100))
                 return sprintf(buf, "unknown\n");
         if (fujitsu_hotkey->rfkill_state & 0x100)
                 return sprintf(buf, "open\n");
@@ -538,7 +539,7 @@ static ssize_t
 show_dock_state(struct device *dev,
                         struct device_attribute *attr, char *buf)
 {
-        if (fujitsu_hotkey->rfkill_state == UNSUPPORTED_CMD)
+        if (!(fujitsu_hotkey->rfkill_supported & 0x200))
                 return sprintf(buf, "unknown\n");
         if (fujitsu_hotkey->rfkill_state & 0x200)
                 return sprintf(buf, "docked\n");
@@ -550,7 +551,7 @@ static ssize_t
 show_radios_state(struct device *dev,
                         struct device_attribute *attr, char *buf)
 {
-        if (fujitsu_hotkey->rfkill_state == UNSUPPORTED_CMD)
+        if (!(fujitsu_hotkey->rfkill_supported & 0x20))
                 return sprintf(buf, "unknown\n");
         if (fujitsu_hotkey->rfkill_state & 0x20)
                 return sprintf(buf, "on\n");
@@ -928,8 +929,17 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
                 ; /* No action, result is discarded */
         vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
 
-        fujitsu_hotkey->rfkill_state =
-                call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
+        fujitsu_hotkey->rfkill_supported =
+                call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
+
+        /* Make sure our bitmask of supported functions is cleared if the
+           RFKILL function block is not implemented, like on the S7020. */
+        if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
+                fujitsu_hotkey->rfkill_supported = 0;
+
+        if (fujitsu_hotkey->rfkill_supported)
+                fujitsu_hotkey->rfkill_state =
+                        call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
 
         /* Suspect this is a keymap of the application panel, print it */
         printk(KERN_INFO "fujitsu-laptop: BTNI: [0x%x]\n",
@@ -1005,8 +1015,9 @@ static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
 
         input = fujitsu_hotkey->input;
 
-        fujitsu_hotkey->rfkill_state =
-                call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
+        if (fujitsu_hotkey->rfkill_supported)
+                fujitsu_hotkey->rfkill_state =
+                        call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
 
         switch (event) {
         case ACPI_FUJITSU_NOTIFY_CODE1: