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drivers: Add generic helper to match by of_node

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Add a helper to match device by the of_node. This will be later used
to provide wrappers to the device iterators for {bus/class/driver}_find_device().
Convert other users to reuse this new helper.

Cc: Alan Tull <atull@kernel.org>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: devicetree@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: linux-fpga@vger.kernel.org
Cc: linux-i2c@vger.kernel.org
Cc: linux-spi@vger.kernel.org
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Moritz Fischer <mdf@kernel.org>
Cc: Peter Rosin <peda@axentia.se>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Thor Thayer <thor.thayer@linux.intel.com>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Suzuki K Poulose 2019-06-14 18:54:01 +01:00 committed by Greg Kroah-Hartman
parent 92ce7e83b4
commit 65b6668234
3 changed files with 9 additions and 6 deletions
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6
drivers/base/core.c
View File

@ -3328,3 +3328,9 @@ void device_set_of_node_from_dev(struct device *dev, const struct device *dev2)
dev->of_node_reused = true; dev->of_node_reused = true;
} }
EXPORT_SYMBOL_GPL(device_set_of_node_from_dev); EXPORT_SYMBOL_GPL(device_set_of_node_from_dev);
int device_match_of_node(struct device *dev, const void *np)
{
return dev->of_node == np;
}
EXPORT_SYMBOL_GPL(device_match_of_node);

7
drivers/fpga/of-fpga-region.c
View File

@ -22,11 +22,6 @@ static const struct of_device_id fpga_region_of_match[] = {
}; };
MODULE_DEVICE_TABLE(of, fpga_region_of_match); MODULE_DEVICE_TABLE(of, fpga_region_of_match);
static int fpga_region_of_node_match(struct device *dev, const void *data)
{
return dev->of_node == data;
}
/** /**
* of_fpga_region_find - find FPGA region * of_fpga_region_find - find FPGA region
* @np: device node of FPGA Region * @np: device node of FPGA Region
@ -37,7 +32,7 @@ static int fpga_region_of_node_match(struct device *dev, const void *data)
*/ */
static struct fpga_region *of_fpga_region_find(struct device_node *np) static struct fpga_region *of_fpga_region_find(struct device_node *np)
{ {
return fpga_region_class_find(NULL, np, fpga_region_of_node_match); return fpga_region_class_find(NULL, np, device_match_of_node);
} }
/** /**

2
include/linux/device.h
View File

@ -163,6 +163,8 @@ void subsys_dev_iter_init(struct subsys_dev_iter *iter,
struct device *subsys_dev_iter_next(struct subsys_dev_iter *iter); struct device *subsys_dev_iter_next(struct subsys_dev_iter *iter);
void subsys_dev_iter_exit(struct subsys_dev_iter *iter); void subsys_dev_iter_exit(struct subsys_dev_iter *iter);
int device_match_of_node(struct device *dev, const void *np);
int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data, int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data,
int (*fn)(struct device *dev, void *data)); int (*fn)(struct device *dev, void *data));
struct device *bus_find_device(struct bus_type *bus, struct device *start, struct device *bus_find_device(struct bus_type *bus, struct device *start,