[PATCH 03/11] net: devres: relax devm_register_netdev()
From: Bartosz Golaszewski <hidden>
Date: 2020-06-22 10:01:17
Also in:
intel-wired-lan, linux-doc, lkml, netdev
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Bartosz Golaszewski <redacted> This devres helper registers a release callback that only unregisters the net_device. It works perfectly fine with netdev structs that are not managed on their own. There's no reason to check this - drop the warning. Signed-off-by: Bartosz Golaszewski <redacted> --- net/devres.c | 19 +------------------ 1 file changed, 1 insertion(+), 18 deletions(-)
diff --git a/net/devres.c b/net/devres.c
index 57a6a88d11f6..1583ccb207c0 100644
--- a/net/devres.c
+++ b/net/devres.c@@ -46,14 +46,6 @@ static void devm_netdev_release(struct device *dev, void *this) unregister_netdev(res->ndev); } -static int netdev_devres_match(struct device *dev, void *this, void *match_data) -{ - struct net_device_devres *res = this; - struct net_device *ndev = match_data; - - return ndev == res->ndev; -} - /** * devm_register_netdev - resource managed variant of register_netdev() * @dev: managing device for this netdev - usually the parent device
@@ -61,22 +53,13 @@ static int netdev_devres_match(struct device *dev, void *this, void *match_data) * * This is a devres variant of register_netdev() for which the unregister * function will be call automatically when the managing device is - * detached. Note: the net_device used must also be resource managed by - * the same struct device. + * detached. */ int devm_register_netdev(struct device *dev, struct net_device *ndev) { struct net_device_devres *dr; int ret; - /* struct net_device must itself be managed. For now a managed netdev - * can only be allocated by devm_alloc_etherdev_mqs() so the check is - * straightforward. - */ - if (WARN_ON(!devres_find(dev, devm_free_netdev, - netdev_devres_match, ndev))) - return -EINVAL; - dr = devres_alloc(devm_netdev_release, sizeof(*dr), GFP_KERNEL); if (!dr) return -ENOMEM;
--
2.26.1