linux-stable/include/linux/of_device.h
Greg Kroah-Hartman a77ad4bf79 of: device: make of_device_uevent_modalias() take a const device *
of_device_uevent_modalias() does not modify the device pointer passed to
it, so mark it constant.  In order to properly do this, a number of
busses need to have a modalias function added as they were attempting to
just point to of_device_uevent_modalias instead of their bus-specific
modalias function.  This is fine except if the prototype for a bus and
device type modalias function diverges and then problems could happen.  To
prevent all of that, just wrap the call to of_device_uevent_modalias()
directly for each bus and device type individually.

Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Samuel Holland <samuel@sholland.org>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Liang He <windhl@126.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Corentin Labbe <clabbe@baylibre.com>
Cc: Zou Wei <zou_wei@huawei.com>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-sunxi@lists.linux.dev
Cc: dri-devel@lists.freedesktop.org
Cc: devicetree@vger.kernel.org
Acked-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230111113018.459199-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-27 13:45:28 +01:00

118 lines
3 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_OF_DEVICE_H
#define _LINUX_OF_DEVICE_H
#include <linux/cpu.h>
#include <linux/platform_device.h>
#include <linux/of_platform.h> /* temporary until merge */
#include <linux/of.h>
#include <linux/mod_devicetable.h>
struct device;
#ifdef CONFIG_OF
extern const struct of_device_id *of_match_device(
const struct of_device_id *matches, const struct device *dev);
/**
* of_driver_match_device - Tell if a driver's of_match_table matches a device.
* @drv: the device_driver structure to test
* @dev: the device structure to match against
*/
static inline int of_driver_match_device(struct device *dev,
const struct device_driver *drv)
{
return of_match_device(drv->of_match_table, dev) != NULL;
}
extern int of_device_add(struct platform_device *pdev);
extern int of_device_register(struct platform_device *ofdev);
extern void of_device_unregister(struct platform_device *ofdev);
extern const void *of_device_get_match_data(const struct device *dev);
extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
extern int of_device_request_module(struct device *dev);
extern void of_device_uevent(const struct device *dev, struct kobj_uevent_env *env);
extern int of_device_uevent_modalias(const struct device *dev, struct kobj_uevent_env *env);
static inline struct device_node *of_cpu_device_node_get(int cpu)
{
struct device *cpu_dev;
cpu_dev = get_cpu_device(cpu);
if (!cpu_dev)
return of_get_cpu_node(cpu, NULL);
return of_node_get(cpu_dev->of_node);
}
int of_dma_configure_id(struct device *dev,
struct device_node *np,
bool force_dma, const u32 *id);
static inline int of_dma_configure(struct device *dev,
struct device_node *np,
bool force_dma)
{
return of_dma_configure_id(dev, np, force_dma, NULL);
}
#else /* CONFIG_OF */
static inline int of_driver_match_device(struct device *dev,
const struct device_driver *drv)
{
return 0;
}
static inline void of_device_uevent(const struct device *dev,
struct kobj_uevent_env *env) { }
static inline const void *of_device_get_match_data(const struct device *dev)
{
return NULL;
}
static inline int of_device_modalias(struct device *dev,
char *str, ssize_t len)
{
return -ENODEV;
}
static inline int of_device_request_module(struct device *dev)
{
return -ENODEV;
}
static inline int of_device_uevent_modalias(const struct device *dev,
struct kobj_uevent_env *env)
{
return -ENODEV;
}
static inline const struct of_device_id *of_match_device(
const struct of_device_id *matches, const struct device *dev)
{
return NULL;
}
static inline struct device_node *of_cpu_device_node_get(int cpu)
{
return NULL;
}
static inline int of_dma_configure_id(struct device *dev,
struct device_node *np,
bool force_dma,
const u32 *id)
{
return 0;
}
static inline int of_dma_configure(struct device *dev,
struct device_node *np,
bool force_dma)
{
return 0;
}
#endif /* CONFIG_OF */
#endif /* _LINUX_OF_DEVICE_H */