From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Date: Sat, 23 May 2020 15:27:08 +0200
Subject: net: move devres helpers into a separate source file
Patch-mainline: v5.8-rc1
Git-commit: cb8a14b205699fee1053a406e1e3fce330b6bdc3
References: bsc#1176447
There's currently only a single devres helper in net/ - devm variant
of alloc_etherdev. Let's move it to net/devres.c with the intention of
assing a second one: devm_register_netdev(). This new routine will need
to know the address of the release function of devm_alloc_etherdev() so
that it can verify (using devres_find()) that the struct net_device
that's being passed to it is also resource managed.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
net/Makefile | 2 +-
net/devres.c | 36 ++++++++++++++++++++++++++++++++++++
net/ethernet/eth.c | 28 ----------------------------
3 files changed, 37 insertions(+), 29 deletions(-)
create mode 100644 net/devres.c
--- a/net/Makefile
+++ b/net/Makefile
@@ -6,7 +6,7 @@
# Rewritten to use lists instead of if-statements.
#
-obj-$(CONFIG_NET) := socket.o core/
+obj-$(CONFIG_NET) := devres.o socket.o core/
tmp-$(CONFIG_COMPAT) := compat.o
obj-$(CONFIG_NET) += $(tmp-y)
--- /dev/null
+++ b/net/devres.c
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * This file contains all networking devres helpers.
+ */
+
+#include <linux/device.h>
+#include <linux/etherdevice.h>
+#include <linux/netdevice.h>
+
+static void devm_free_netdev(struct device *dev, void *res)
+{
+ free_netdev(*(struct net_device **)res);
+}
+
+struct net_device *devm_alloc_etherdev_mqs(struct device *dev, int sizeof_priv,
+ unsigned int txqs, unsigned int rxqs)
+{
+ struct net_device **dr;
+ struct net_device *netdev;
+
+ dr = devres_alloc(devm_free_netdev, sizeof(*dr), GFP_KERNEL);
+ if (!dr)
+ return NULL;
+
+ netdev = alloc_etherdev_mqs(sizeof_priv, txqs, rxqs);
+ if (!netdev) {
+ devres_free(dr);
+ return NULL;
+ }
+
+ *dr = netdev;
+ devres_add(dev, dr);
+
+ return netdev;
+}
+EXPORT_SYMBOL(devm_alloc_etherdev_mqs);
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -416,34 +416,6 @@ struct net_device *alloc_etherdev_mqs(in
}
EXPORT_SYMBOL(alloc_etherdev_mqs);
-static void devm_free_netdev(struct device *dev, void *res)
-{
- free_netdev(*(struct net_device **)res);
-}
-
-struct net_device *devm_alloc_etherdev_mqs(struct device *dev, int sizeof_priv,
- unsigned int txqs, unsigned int rxqs)
-{
- struct net_device **dr;
- struct net_device *netdev;
-
- dr = devres_alloc(devm_free_netdev, sizeof(*dr), GFP_KERNEL);
- if (!dr)
- return NULL;
-
- netdev = alloc_etherdev_mqs(sizeof_priv, txqs, rxqs);
- if (!netdev) {
- devres_free(dr);
- return NULL;
- }
-
- *dr = netdev;
- devres_add(dev, dr);
-
- return netdev;
-}
-EXPORT_SYMBOL(devm_alloc_etherdev_mqs);
-
ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len)
{
return scnprintf(buf, PAGE_SIZE, "%*phC\n", len, addr);