dell-laptop: Don't set sw_state from the query callback

The query callback should only update the hw_state, see the comment in
net/rfkill/core.c in rfkill_set_block, which is its only caller.

rfkill_set_block will modify the sw_state directly after calling query so
calling set_sw_state is an expensive NOP.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>

diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index 06f281bf77906dd086eda9cb6564efd555d54993..7f47396846d19fc5ea4f01c70554fe14ec68c48d 100644 (file)
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -425,10 +425,15 @@ out:
        return ret;
 }
 
-static void dell_rfkill_update(struct rfkill *rfkill, int radio, int status)
+static void dell_rfkill_update_sw_state(struct rfkill *rfkill, int radio,
+                                       int status)
 {
        rfkill_set_sw_state(rfkill, !!(status & BIT(radio + 16)));
+}
 
+static void dell_rfkill_update_hw_state(struct rfkill *rfkill, int radio,
+                                       int status)
+{
        if (hwswitch_state & (BIT(radio - 1)))
                rfkill_set_hw_state(rfkill, !(status & BIT(16)));
 }
@@ -442,7 +447,7 @@ static void dell_rfkill_query(struct rfkill *rfkill, void *data)
        status = buffer->output[1];
        release_buffer();
 
-       dell_rfkill_update(rfkill, (unsigned long)data, status);
+       dell_rfkill_update_hw_state(rfkill, (unsigned long)data, status);
 }
 
 static const struct rfkill_ops dell_rfkill_ops = {
@@ -528,12 +533,18 @@ static void dell_update_rfkill(struct work_struct *ignored)
        status = buffer->output[1];
        release_buffer();
 
-       if (wifi_rfkill)
-               dell_rfkill_update(wifi_rfkill, 1, status);
-       if (bluetooth_rfkill)
-               dell_rfkill_update(bluetooth_rfkill, 2, status);
-       if (wwan_rfkill)
-               dell_rfkill_update(wwan_rfkill, 3, status);
+       if (wifi_rfkill) {
+               dell_rfkill_update_hw_state(wifi_rfkill, 1, status);
+               dell_rfkill_update_sw_state(wifi_rfkill, 1, status);
+       }
+       if (bluetooth_rfkill) {
+               dell_rfkill_update_hw_state(bluetooth_rfkill, 2, status);
+               dell_rfkill_update_sw_state(bluetooth_rfkill, 2, status);
+       }
+       if (wwan_rfkill) {
+               dell_rfkill_update_hw_state(wwan_rfkill, 3, status);
+               dell_rfkill_update_sw_state(wwan_rfkill, 3, status);
+       }
 }
 static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill);