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driver core: Add device_link_test() for testing device link flags

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To avoid coding mistakes like the one fixed by commit 3860cbe239 ("PM:
sleep: Fix bit masking operation"), introduce device_link_test() for
testing device link flags and use it where applicable.

No intentional functional impact.

Signed-off-by: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/2793309.mvXUDI8C0e@rjwysocki.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rafael J. Wysocki
2025-06-16 20:16:21 +02:00
committed by Greg Kroah-Hartman
parent fb506e31b3
commit b29929b819
4 changed files with 45 additions and 41 deletions
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6
drivers/base/power/runtime.c
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@@ -290,7 +290,7 @@ static int rpm_get_suppliers(struct device *dev)
device_links_read_lock_held()) {
int retval;
if (!(link->flags & DL_FLAG_PM_RUNTIME))
if (!device_link_test(link, DL_FLAG_PM_RUNTIME))
continue;
retval = pm_runtime_get_sync(link->supplier);
@@ -1879,7 +1879,7 @@ void pm_runtime_get_suppliers(struct device *dev)
list_for_each_entry_rcu(link, &dev->links.suppliers, c_node,
device_links_read_lock_held())
if (link->flags & DL_FLAG_PM_RUNTIME) {
if (device_link_test(link, DL_FLAG_PM_RUNTIME)) {
link->supplier_preactivated = true;
pm_runtime_get_sync(link->supplier);
}
@@ -1933,7 +1933,7 @@ static void pm_runtime_drop_link_count(struct device *dev)
*/
void pm_runtime_drop_link(struct device_link *link)
{
if (!(link->flags & DL_FLAG_PM_RUNTIME))
if (!device_link_test(link, DL_FLAG_PM_RUNTIME))
return;
pm_runtime_drop_link_count(link->consumer);