diff options
| author |   Bjorn Helgaas <bjorn.helgaas@hp.com> | 2009-04-08 15:39:43 +0000 |
|---|---|---|
| committer |   Len Brown <len.brown@intel.com> | 2009-04-11 00:36:40 -0400 |
| commit | e2fb9754d27513918a4936e8cbaad50ff56cfd3d (patch) | |
| tree | 0ad7d3e3631ea16c03c2d423908a11ef9c3079ec /drivers/acpi/button.c | |
| parent | ACPI: button: whitespace changes (diff) | |
| download | linux-dev-e2fb9754d27513918a4936e8cbaad50ff56cfd3d.tar.xz linux-dev-e2fb9754d27513918a4936e8cbaad50ff56cfd3d.zip | |
ACPI: button: remove unnecessary null pointer checks
Better to oops and learn about a bug than to silently cover it up.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/button.c')
| -rw-r--r-- | drivers/acpi/button.c | 22 |
1 files changed, 1 insertions, 21 deletions
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index 52eb06ea4f80..c4632366226f 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -128,9 +128,6 @@ static int acpi_button_info_seq_show(struct seq_file *seq, void *offset) { struct acpi_button *button = seq->private; - if (!button || !button->device) - return 0; - seq_printf(seq, "type: %s\n", acpi_device_name(button->device)); return 0; @@ -147,9 +144,6 @@ static int acpi_button_state_seq_show(struct seq_file *seq, void *offset) acpi_status status; unsigned long long state; - if (!button || !button->device) - return 0; - status = acpi_evaluate_integer(button->device->handle, "_LID", NULL, &state); seq_printf(seq, "state: %s\n", ACPI_FAILURE(status) ? "unsupported" : @@ -171,9 +165,6 @@ static int acpi_button_add_fs(struct acpi_device *device) struct proc_dir_entry *entry = NULL; struct acpi_button *button; - if (!device || !acpi_driver_data(device)) - return -EINVAL; - button = acpi_driver_data(device); switch (button->type) { @@ -270,9 +261,6 @@ static void acpi_button_notify(struct acpi_device *device, u32 event) struct acpi_button *button = acpi_driver_data(device); struct input_dev *input; - if (!button || !button->device) - return; - switch (event) { case ACPI_FIXED_HARDWARE_EVENT: event = ACPI_BUTTON_NOTIFY_STATUS; @@ -305,10 +293,8 @@ static int acpi_button_resume(struct acpi_device *device) { struct acpi_button *button; - if (!device) - return -EINVAL; button = acpi_driver_data(device); - if (button && button->type == ACPI_BUTTON_TYPE_LID) + if (button->type == ACPI_BUTTON_TYPE_LID) return acpi_lid_send_state(button); return 0; } @@ -319,9 +305,6 @@ static int acpi_button_add(struct acpi_device *device) struct acpi_button *button; struct input_dev *input; - if (!device) - return -EINVAL; - button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL); if (!button) return -ENOMEM; @@ -438,9 +421,6 @@ static int acpi_button_remove(struct acpi_device *device, int type) { struct acpi_button *button; - if (!device || !acpi_driver_data(device)) - return -EINVAL; - button = acpi_driver_data(device); acpi_button_remove_fs(device); |