Messages in this thread | | | Date | Mon, 3 Jun 2019 21:11:33 +0200 | From | Greg KH <> | Subject | Re: [RFC PATCH 46/57] driver: Add variants of driver_find_device() |
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On Mon, Jun 03, 2019 at 04:50:12PM +0100, Suzuki K Poulose wrote: > Add a wrappers to lookup a device by name for a given driver, by various > generic properties of a device. This can avoid the proliferation of custom > match functions throughout the drivers. > > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Cc: "Rafael J. Wysocki" <rafael@kernel.org> > Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> > --- > include/linux/device.h | 44 ++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 44 insertions(+) > > diff --git a/include/linux/device.h b/include/linux/device.h > index 52d59d5..68d6e04 100644 > --- a/include/linux/device.h > +++ b/include/linux/device.h > @@ -401,6 +401,50 @@ struct device *driver_find_device(struct device_driver *drv, > struct device *start, void *data, > int (*match)(struct device *dev, const void *data)); > > +/** > + * driver_find_device_by_name - device iterator for locating a particular device > + * of a specific name. > + * @driver: the driver we're iterating > + * @start: Device to begin with > + * @name: name of the device to match > + */ > +static inline struct device *driver_find_device_by_name(struct device_driver *drv, > + struct device *start, > + const char *name) > +{ > + return driver_find_device(drv, start, (void *)name, device_match_name);
Why is the cast needed?
> +} > + > +/** > + * driver_find_device_by_of_node- device iterator for locating a particular device > + * by of_node pointer. > + * @driver: the driver we're iterating > + * @start: Device to begin with > + * @np: of_node pointer to match. > + */ > +static inline struct device * > +driver_find_device_by_of_node(struct device_driver *drv, > + struct device *start, > + const struct device_node *np) > +{ > + return driver_find_device(drv, start, (void *)np, device_match_of_node);
Same here.
> +} > + > +/** > + * driver_find_device_by_fwnode- device iterator for locating a particular device > + * by fwnode pointer. > + * @driver: the driver we're iterating > + * @start: Device to begin with > + * @fwnode: fwnode pointer to match. > + */ > +static inline struct device * > +driver_find_device_by_fwnode(struct device_driver *drv, > + struct device *start, > + const struct fwnode_handle *fwnode) > +{ > + return driver_find_device(drv, start, (void *)fwnode, device_match_fwnode);
And here
thanks,
greg k-h
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