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Commit e2fb9754 authored by Bjorn Helgaas's avatar Bjorn Helgaas Committed by Len Brown
Browse files

ACPI: button: remove unnecessary null pointer checks 



Better to oops and learn about a bug than to silently cover it up.

Signed-off-by: default avatarBjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 50a4da89

drivers/acpi/button.c

+1 −21
Original line number Diff line number Diff line
@@ -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);