[PATCH v2 2/3] eeepc-laptop: Check return values from rfkill_register

Matthew Garrett
2008-11-20T15:37:08Z

Error out if rfkill registration fails, and also set the default system state
appropriately on boot

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

Includes Alan's suggested cleanup for the failure path

drivers/misc/eeepc-laptop.c | 51 +++++++++++++++++++++++++++++++-----------
1 files changed, 37 insertions(+), 14 deletions(-)

diff --git a/drivers/misc/eeepc-laptop.c b/drivers/misc/eeepc-laptop.c
index e81ef18..3de44fb 100644
--- a/drivers/misc/eeepc-laptop.c
+++ b/drivers/misc/eeepc-laptop.c
@@ -562,7 +562,7 @@ static int eeepc_hotk_add(struct acpi_device *device)
ehotk->device = device;
result = eeepc_hotk_check();
if (result)
- goto end;
+ goto ehotk_fail;
status = acpi_install_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
eeepc_hotk_notify, ehotk);
if (ACPI_FAILURE(status))
@@ -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) {
@@ -592,27 +599,43 @@ 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);
+ ehotk_fail:
+ kfree(ehotk);
+ ehotk = NULL;

- end:
- if (result) {
- kfree(ehotk);
- ehotk = NULL;
- }
return result;
}