linux-kernel - [Patch 2/3] eeepc-laptop: Check return values from rfkill

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Message-ID: <20081117133804.GD12303@srcf.ucam.org>
Date:	Mon, 17 Nov 2008 13:38:04 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Corentin Chary <corentin.chary@...il.com>, ecc@....edu
Cc:	linux acpi <linux-acpi@...r.kernel.org>,
	linux-kernel@...r.kernel.org
Subject: [Patch 2/3] eeepc-laptop: Check return values from rfkill_register

We should check that rfkill registration succeeds and error out if it 
doesn't. This patch also sets the default state to match the BIOS on 
load.

Signed-off-by: Matthew Garrett <mjg@...hat.com>

diff --git a/drivers/misc/eeepc-laptop.c b/drivers/misc/eeepc-laptop.c
index e81ef18..4d70626 100644
--- a/drivers/misc/eeepc-laptop.c
+++ b/drivers/misc/eeepc-laptop.c
@@ -573,18 +573,25 @@ static int eeepc_hotk_add(struct acpi_device *device)
 							   RFKILL_TYPE_WLAN);
 
 		if (!ehotk->eeepc_wlan_rfkill)
-			goto end;
+			goto wlan_fail;
 
 		ehotk->eeepc_wlan_rfkill->name = "eeepc-wlan";
 		ehotk->eeepc_wlan_rfkill->toggle_radio = eeepc_wlan_rfkill_set;
 		ehotk->eeepc_wlan_rfkill->get_state = eeepc_wlan_rfkill_state;
-		if (get_acpi(CM_ASL_WLAN) == 1)
+		if (get_acpi(CM_ASL_WLAN) == 1) {
 			ehotk->eeepc_wlan_rfkill->state =
 				RFKILL_STATE_UNBLOCKED;
-		else
+			rfkill_set_default(RFKILL_TYPE_WLAN,
+					   RFKILL_STATE_UNBLOCKED);
+		} else {
 			ehotk->eeepc_wlan_rfkill->state =
 				RFKILL_STATE_SOFT_BLOCKED;
-		rfkill_register(ehotk->eeepc_wlan_rfkill);
+			rfkill_set_default(RFKILL_TYPE_WLAN,
+					   RFKILL_STATE_SOFT_BLOCKED);
+		}
+		result = rfkill_register(ehotk->eeepc_wlan_rfkill);
+		if (result)
+			goto wlan_fail;
 	}
 
 	if (get_acpi(CM_ASL_BLUETOOTH) != -1) {
@@ -592,22 +599,39 @@ static int eeepc_hotk_add(struct acpi_device *device)
 			rfkill_allocate(&device->dev, RFKILL_TYPE_BLUETOOTH);
 
 		if (!ehotk->eeepc_bluetooth_rfkill)
-			goto end;
+			goto bluetooth_fail;
 
 		ehotk->eeepc_bluetooth_rfkill->name = "eeepc-bluetooth";
 		ehotk->eeepc_bluetooth_rfkill->toggle_radio =
 			eeepc_bluetooth_rfkill_set;
 		ehotk->eeepc_bluetooth_rfkill->get_state =
 			eeepc_bluetooth_rfkill_state;
-		if (get_acpi(CM_ASL_BLUETOOTH) == 1)
+		if (get_acpi(CM_ASL_BLUETOOTH) == 1) {
 			ehotk->eeepc_bluetooth_rfkill->state =
 				RFKILL_STATE_UNBLOCKED;
-		else
+			rfkill_set_default(RFKILL_TYPE_BLUETOOTH,
+					   RFKILL_STATE_UNBLOCKED);
+		} else {
 			ehotk->eeepc_bluetooth_rfkill->state =
 				RFKILL_STATE_SOFT_BLOCKED;
-		rfkill_register(ehotk->eeepc_bluetooth_rfkill);
+			rfkill_set_default(RFKILL_TYPE_BLUETOOTH,
+					   RFKILL_STATE_SOFT_BLOCKED);
+		}
+
+		result = rfkill_register(ehotk->eeepc_bluetooth_rfkill);
+		if (result)
+			goto bluetooth_fail;
 	}
+	return 0;
 
+ bluetooth_fail:
+	if (ehotk->eeepc_bluetooth_rfkill)
+		rfkill_free(ehotk->eeepc_bluetooth_rfkill);
+	rfkill_unregister(ehotk->eeepc_wlan_rfkill);
+	ehotk->eeepc_wlan_rfkill = NULL;
+ wlan_fail:
+	if (ehotk->eeepc_wlan_rfkill)
+		rfkill_free(ehotk->eeepc_wlan_rfkill);
  end:
 	if (result) {
 		kfree(ehotk);

-- 
Matthew Garrett | mjg59@...f.ucam.org
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