@@ -336,6 +336,37 @@ void device_link_del(struct device_link *link)
}
EXPORT_SYMBOL_GPL(device_link_del);
+/**
+ * device_link_del_dev - Delete a link between two given devices
+ * @consumer: Consumer end of the link.
+ * @supplier: Supplier end of the link.
+ *
+ * The caller must ensure proper synchronization of this function with runtime
+ * PM.
+ */
+void device_link_del_dev(struct device *consumer, struct device *supplier)
+{
+ struct device_link *link;
+
+ if (!consumer || !supplier)
+ return;
+
+ device_links_write_lock();
+ device_pm_lock();
+
+ list_for_each_entry(link, &supplier->links.consumers, s_node) {
+ if (link->consumer == consumer) {
+ __device_link_del(link);
+ /* just one link between the devices */
+ break;
+ }
+ }
+
+ device_pm_unlock();
+ device_links_write_unlock();
+}
+EXPORT_SYMBOL_GPL(device_link_del_dev);
+
static void device_links_missing_supplier(struct device *dev)
{
struct device_link *link;
@@ -1278,6 +1278,7 @@ extern const char *dev_driver_string(const struct device *dev);
struct device_link *device_link_add(struct device *consumer,
struct device *supplier, u32 flags);
void device_link_del(struct device_link *link);
+void device_link_del_dev(struct device *consumer, struct device *supplier);
#ifdef CONFIG_PRINTK
Given the consumer and supplier devices, add an API to delete the link between them. Suggested-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- - This patch replaces an earlier patch [1] that was adding device_link_find() API. [1] https://patchwork.kernel.org/patch/10277975/ drivers/base/core.c | 31 +++++++++++++++++++++++++++++++ include/linux/device.h | 1 + 2 files changed, 32 insertions(+)