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ACPI: button: cache hid/name/class pointers 

This patch adds temporaries to cache the acpi_device_hid(),
acpi_device_name(), and acpi_device_class() pointers so we
don't have to clutter the code with so many uses of those
interfaces.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bjorn Helgaas 2009-04-08 15:39:54 +00:00 committed by Len Brown
parent 1bce81131c
commit bf04a77227
1 changed files with 24 additions and 24 deletions
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48
drivers/acpi/button.c
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@ -300,6 +300,7 @@ static int acpi_button_add(struct acpi_device *device)
{
struct acpi_button *button;
struct input_dev *input;
char *hid, *name, *class;
int error;
button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);
@ -315,40 +316,41 @@ static int acpi_button_add(struct acpi_device *device)
goto err_free_button;
}
hid = acpi_device_hid(device);
name = acpi_device_name(device);
class = acpi_device_class(device);
/*
* Determine the button type (via hid), as fixed-feature buttons
* need to be handled a bit differently than generic-space.
*/
if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWER)) {
if (!strcmp(hid, ACPI_BUTTON_HID_POWER)) {
button->type = ACPI_BUTTON_TYPE_POWER;
strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_POWER);
sprintf(acpi_device_class(device), "%s/%s",
strcpy(name, ACPI_BUTTON_DEVICE_NAME_POWER);
sprintf(class, "%s/%s",
ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
} else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWERF)) {
} else if (!strcmp(hid, ACPI_BUTTON_HID_POWERF)) {
button->type = ACPI_BUTTON_TYPE_POWERF;
strcpy(acpi_device_name(device),
ACPI_BUTTON_DEVICE_NAME_POWERF);
sprintf(acpi_device_class(device), "%s/%s",
strcpy(name, ACPI_BUTTON_DEVICE_NAME_POWERF);
sprintf(class, "%s/%s",
ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
} else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEP)) {
} else if (!strcmp(hid, ACPI_BUTTON_HID_SLEEP)) {
button->type = ACPI_BUTTON_TYPE_SLEEP;
strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_SLEEP);
sprintf(acpi_device_class(device), "%s/%s",
strcpy(name, ACPI_BUTTON_DEVICE_NAME_SLEEP);
sprintf(class, "%s/%s",
ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
} else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEPF)) {
} else if (!strcmp(hid, ACPI_BUTTON_HID_SLEEPF)) {
button->type = ACPI_BUTTON_TYPE_SLEEPF;
strcpy(acpi_device_name(device),
ACPI_BUTTON_DEVICE_NAME_SLEEPF);
sprintf(acpi_device_class(device), "%s/%s",
strcpy(name, ACPI_BUTTON_DEVICE_NAME_SLEEPF);
sprintf(class, "%s/%s",
ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
} else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_LID)) {
} else if (!strcmp(hid, ACPI_BUTTON_HID_LID)) {
button->type = ACPI_BUTTON_TYPE_LID;
strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_LID);
sprintf(acpi_device_class(device), "%s/%s",
strcpy(name, ACPI_BUTTON_DEVICE_NAME_LID);
sprintf(class, "%s/%s",
ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID);
} else {
printk(KERN_ERR PREFIX "Unsupported hid [%s]\n",
acpi_device_hid(device));
printk(KERN_ERR PREFIX "Unsupported hid [%s]\n", hid);
error = -ENODEV;
goto err_free_input;
}
@ -357,10 +359,9 @@ static int acpi_button_add(struct acpi_device *device)
if (error)
goto err_free_input;
snprintf(button->phys, sizeof(button->phys),
"%s/button/input0", acpi_device_hid(device));
snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid);
input->name = acpi_device_name(device);
input->name = name;
input->phys = button->phys;
input->id.bustype = BUS_HOST;
input->id.product = button->type;
@ -401,8 +402,7 @@ static int acpi_button_add(struct acpi_device *device)
device->wakeup.state.enabled = 1;
}
printk(KERN_INFO PREFIX "%s [%s]\n",
acpi_device_name(device), acpi_device_bid(device));
printk(KERN_INFO PREFIX "%s [%s]\n", name, acpi_device_bid(device));
return 0;
err_remove_fs: