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[2.15.156.232]) by smtp.gmail.com with ESMTPSA id q2sm2530782wrx.60.2020.05.20.04.44.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 May 2020 04:44:24 -0700 (PDT) From: Bartosz Golaszewski To: Jonathan Corbet , "David S . Miller" , Matthias Brugger , John Crispin , Sean Wang , Mark Lee , Jakub Kicinski , Arnd Bergmann , Fabien Parent , Heiner Kallweit , Edwin Peer Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Stephane Le Provost , Pedro Tsai , Andrew Perepech , Bartosz Golaszewski Subject: [PATCH 2/5] net: move devres helpers into a separate source file Date: Wed, 20 May 2020 13:44:12 +0200 Message-Id: <20200520114415.13041-3-brgl@bgdev.pl> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200520114415.13041-1-brgl@bgdev.pl> References: <20200520114415.13041-1-brgl@bgdev.pl> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Bartosz Golaszewski 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 --- 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 diff --git a/net/Makefile b/net/Makefile index 07ea48160874..5744bf1997fd 100644 --- 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) diff --git a/net/devres.c b/net/devres.c new file mode 100644 index 000000000000..c1465d9f9019 --- /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 +#include +#include + +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); diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c index c8b903302ff2..dac65180c4ef 100644 --- a/net/ethernet/eth.c +++ b/net/ethernet/eth.c @@ -400,34 +400,6 @@ struct net_device *alloc_etherdev_mqs(int sizeof_priv, unsigned int txqs, } 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); -- 2.25.0