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Date: Tue, 9 Oct 2018 11:44:28 -0600
From: Mathieu Poirier <mathieu.poirier@...aro.org>
To: Silesh C V <svellattu@...sta.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Rafael J. Wysocki" <rafael@...nel.org>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-i2c@...r.kernel.org, linux-rdma@...r.kernel.org,
netdev@...r.kernel.org, devicetree@...r.kernel.org,
linux-spi@...r.kernel.org, Wolfram Sang <wsa@...-dreams.de>,
Lijun Ou <oulijun@...wei.com>,
"Wei Hu(Xavier)" <xavier.huwei@...wei.com>,
Yisen Zhuang <yisen.zhuang@...wei.com>,
Salil Mehta <salil.mehta@...wei.com>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
Andrew Lunn <andrew@...n.ch>,
Florian Fainelli <f.fainelli@...il.com>,
Rob Herring <robh+dt@...nel.org>,
Frank Rowand <frowand.list@...il.com>,
Mark Brown <broonie@...nel.org>,
"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH v3 2/2] treewide: use bus_find_device_by_fwnode
On Tue, Oct 09, 2018 at 03:47:25PM +0530, Silesh C V wrote:
> Use bus_find_device_by_fwnode helper to find the device having a
> specific firmware node on a bus.
>
> Signed-off-by: Silesh C V <svellattu@...sta.com>
> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> Reviewed-by: Rob Herring <robh@...nel.org>
> ---
> Changes since v2:
> - Add Reviewed-by tags
>
> drivers/hwtracing/coresight/of_coresight.c | 14 ++++----------
> drivers/i2c/i2c-core-of.c | 9 ++-------
> drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 8 +-------
> drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c | 8 +-------
> drivers/nvmem/core.c | 7 +------
> drivers/of/of_mdio.c | 8 +-------
> drivers/of/platform.c | 7 +------
> drivers/spi/spi.c | 10 +++-------
> 8 files changed, 14 insertions(+), 57 deletions(-)
>
> diff --git a/drivers/hwtracing/coresight/of_coresight.c b/drivers/hwtracing/coresight/of_coresight.c
> index 6880bee..8193b50 100644
> --- a/drivers/hwtracing/coresight/of_coresight.c
> +++ b/drivers/hwtracing/coresight/of_coresight.c
> @@ -17,12 +17,6 @@
> #include <linux/cpumask.h>
> #include <asm/smp_plat.h>
>
> -
> -static int of_dev_node_match(struct device *dev, void *data)
> -{
> - return dev->of_node == data;
> -}
> -
> static struct device *
> of_coresight_get_endpoint_device(struct device_node *endpoint)
> {
> @@ -32,8 +26,8 @@ static int of_dev_node_match(struct device *dev, void *data)
> * If we have a non-configurable replicator, it will be found on the
> * platform bus.
> */
> - dev = bus_find_device(&platform_bus_type, NULL,
> - endpoint, of_dev_node_match);
> + dev = bus_find_device_by_fwnode(&platform_bus_type, NULL,
> + &endpoint->fwnode);
> if (dev)
> return dev;
>
> @@ -41,8 +35,8 @@ static int of_dev_node_match(struct device *dev, void *data)
> * We have a configurable component - circle through the AMBA bus
> * looking for the device that matches the endpoint node.
> */
> - return bus_find_device(&amba_bustype, NULL,
> - endpoint, of_dev_node_match);
> + return bus_find_device_by_fwnode(&amba_bustype, NULL,
> + &endpoint->fwnode);
This doesn't apply on linux-next. This late in the cycle you may want to rebase
your work on that tree.
Otherwise and for the coresight part:
Tested-by: Mathieu Poirier <mathieu.poirier@...aro.org>
Mathieu
> }
>
> static void of_coresight_get_ports(const struct device_node *node,
> diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c
> index 6cb7ad6..2b8ef8d 100644
> --- a/drivers/i2c/i2c-core-of.c
> +++ b/drivers/i2c/i2c-core-of.c
> @@ -116,18 +116,13 @@ void of_i2c_register_devices(struct i2c_adapter *adap)
> of_node_put(bus);
> }
>
> -static int of_dev_node_match(struct device *dev, void *data)
> -{
> - return dev->of_node == data;
> -}
> -
> /* must call put_device() when done with returned i2c_client device */
> struct i2c_client *of_find_i2c_device_by_node(struct device_node *node)
> {
> struct device *dev;
> struct i2c_client *client;
>
> - dev = bus_find_device(&i2c_bus_type, NULL, node, of_dev_node_match);
> + dev = bus_find_device_by_fwnode(&i2c_bus_type, NULL, &node->fwnode);
> if (!dev)
> return NULL;
>
> @@ -145,7 +140,7 @@ struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node)
> struct device *dev;
> struct i2c_adapter *adapter;
>
> - dev = bus_find_device(&i2c_bus_type, NULL, node, of_dev_node_match);
> + dev = bus_find_device_by_fwnode(&i2c_bus_type, NULL, &node->fwnode);
> if (!dev)
> return NULL;
>
> diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
> index 081aa91..b0d418e 100644
> --- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
> +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
> @@ -4832,19 +4832,13 @@ static void hns_roce_v1_cleanup_eq_table(struct hns_roce_dev *hr_dev)
> };
> MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match);
>
> -static int hns_roce_node_match(struct device *dev, void *fwnode)
> -{
> - return dev->fwnode == fwnode;
> -}
> -
> static struct
> platform_device *hns_roce_find_pdev(struct fwnode_handle *fwnode)
> {
> struct device *dev;
>
> /* get the 'device' corresponding to the matching 'fwnode' */
> - dev = bus_find_device(&platform_bus_type, NULL,
> - fwnode, hns_roce_node_match);
> + dev = bus_find_device_by_fwnode(&platform_bus_type, NULL, fwnode);
> /* get the platform device */
> return dev ? to_platform_device(dev) : NULL;
> }
> diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
> index 16294cd..d5d7c88 100644
> --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
> +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
> @@ -758,17 +758,11 @@ struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev)
> return (void *)misc_op;
> }
>
> -static int hns_dsaf_dev_match(struct device *dev, void *fwnode)
> -{
> - return dev->fwnode == fwnode;
> -}
> -
> struct
> platform_device *hns_dsaf_find_platform_device(struct fwnode_handle *fwnode)
> {
> struct device *dev;
>
> - dev = bus_find_device(&platform_bus_type, NULL,
> - fwnode, hns_dsaf_dev_match);
> + dev = bus_find_device_by_fwnode(&platform_bus_type, NULL, fwnode);
> return dev ? to_platform_device(dev) : NULL;
> }
> diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
> index aa16578..b62f236 100644
> --- a/drivers/nvmem/core.c
> +++ b/drivers/nvmem/core.c
> @@ -262,11 +262,6 @@ static void nvmem_release(struct device *dev)
> .name = "nvmem",
> };
>
> -static int of_nvmem_match(struct device *dev, void *nvmem_np)
> -{
> - return dev->of_node == nvmem_np;
> -}
> -
> static struct nvmem_device *of_nvmem_find(struct device_node *nvmem_np)
> {
> struct device *d;
> @@ -274,7 +269,7 @@ static struct nvmem_device *of_nvmem_find(struct device_node *nvmem_np)
> if (!nvmem_np)
> return NULL;
>
> - d = bus_find_device(&nvmem_bus_type, NULL, nvmem_np, of_nvmem_match);
> + d = bus_find_device_by_fwnode(&nvmem_bus_type, NULL, &nvmem_np->fwnode);
>
> if (!d)
> return NULL;
> diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
> index e92391d..2906a6b 100644
> --- a/drivers/of/of_mdio.c
> +++ b/drivers/of/of_mdio.c
> @@ -282,12 +282,6 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
> }
> EXPORT_SYMBOL(of_mdiobus_register);
>
> -/* Helper function for of_phy_find_device */
> -static int of_phy_match(struct device *dev, void *phy_np)
> -{
> - return dev->of_node == phy_np;
> -}
> -
> /**
> * of_phy_find_device - Give a PHY node, find the phy_device
> * @phy_np: Pointer to the phy's device tree node
> @@ -303,7 +297,7 @@ struct phy_device *of_phy_find_device(struct device_node *phy_np)
> if (!phy_np)
> return NULL;
>
> - d = bus_find_device(&mdio_bus_type, NULL, phy_np, of_phy_match);
> + d = bus_find_device_by_fwnode(&mdio_bus_type, NULL, &phy_np->fwnode);
> if (d) {
> mdiodev = to_mdio_device(d);
> if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY)
> diff --git a/drivers/of/platform.c b/drivers/of/platform.c
> index 6c59673..36dd58e 100644
> --- a/drivers/of/platform.c
> +++ b/drivers/of/platform.c
> @@ -37,11 +37,6 @@
> {} /* Empty terminated list */
> };
>
> -static int of_dev_node_match(struct device *dev, void *data)
> -{
> - return dev->of_node == data;
> -}
> -
> /**
> * of_find_device_by_node - Find the platform_device associated with a node
> * @np: Pointer to device tree node
> @@ -55,7 +50,7 @@ struct platform_device *of_find_device_by_node(struct device_node *np)
> {
> struct device *dev;
>
> - dev = bus_find_device(&platform_bus_type, NULL, np, of_dev_node_match);
> + dev = bus_find_device_by_fwnode(&platform_bus_type, NULL, &np->fwnode);
> return dev ? to_platform_device(dev) : NULL;
> }
> EXPORT_SYMBOL(of_find_device_by_node);
> diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
> index 9da0bc5..97128a5 100644
> --- a/drivers/spi/spi.c
> +++ b/drivers/spi/spi.c
> @@ -3324,16 +3324,12 @@ int spi_write_then_read(struct spi_device *spi,
> /*-------------------------------------------------------------------------*/
>
> #if IS_ENABLED(CONFIG_OF_DYNAMIC)
> -static int __spi_of_device_match(struct device *dev, void *data)
> -{
> - return dev->of_node == data;
> -}
> -
> /* must call put_device() when done with returned spi_device device */
> static struct spi_device *of_find_spi_device_by_node(struct device_node *node)
> {
> - struct device *dev = bus_find_device(&spi_bus_type, NULL, node,
> - __spi_of_device_match);
> + struct device *dev = bus_find_device_by_fwnode(&spi_bus_type, NULL,
> + &node->fwnode);
> +
> return dev ? to_spi_device(dev) : NULL;
> }
>
> --
> 1.9.1
>
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