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ACPI: property: Switch node property referencing from ifs to a switch

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__acpi_node_get_property_reference() uses a series of if () statements for
testing the same variable. There's soon going to be one more value to be
tested.

Switch to use switch() instead.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Sakari Ailus
2022-07-11 14:26:03 +03:00
committed by Rafael J. Wysocki
parent 1aef25d9d1
commit 88af7bbdea
1 changed files with 22 additions and 19 deletions
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41
drivers/acpi/property.c
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@ -778,11 +778,9 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
if (ret)
return ret == -EINVAL ? -ENOENT : -EINVAL;
/*
* The simplest case is when the value is a single reference. Just
* return that reference then.
*/
if (obj->type == ACPI_TYPE_LOCAL_REFERENCE) {
switch (obj->type) {
case ACPI_TYPE_LOCAL_REFERENCE:
/* Plain single reference without arguments. */
if (index)
return -ENOENT;
@ -793,19 +791,21 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
args->fwnode = acpi_fwnode_handle(device);
args->nargs = 0;
return 0;
case ACPI_TYPE_PACKAGE:
/*
* If it is not a single reference, then it is a package of
* references followed by number of ints as follows:
*
* Package () { REF, INT, REF, INT, INT }
*
* The index argument is then used to determine which reference
* the caller wants (along with the arguments).
*/
break;
default:
return -EINVAL;
}
/*
* If it is not a single reference, then it is a package of
* references followed by number of ints as follows:
*
* Package () { REF, INT, REF, INT, INT }
*
* The index argument is then used to determine which reference
* the caller wants (along with the arguments).
*/
if (obj->type != ACPI_TYPE_PACKAGE)
return -EINVAL;
if (index >= obj->package.count)
return -ENOENT;
@ -813,7 +813,8 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
end = element + obj->package.count;
while (element < end) {
if (element->type == ACPI_TYPE_LOCAL_REFERENCE) {
switch (element->type) {
case ACPI_TYPE_LOCAL_REFERENCE:
device = acpi_fetch_acpi_dev(element->reference.handle);
if (!device)
return -EINVAL;
@ -829,11 +830,13 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
if (idx == index)
return 0;
} else if (element->type == ACPI_TYPE_INTEGER) {
break;
case ACPI_TYPE_INTEGER:
if (idx == index)
return -ENOENT;
element++;
} else {
break;
default:
return -EINVAL;
}