mirror of
git://git.yoctoproject.org/linux-yocto.git
synced 2025-07-05 13:25:20 +02:00
d69d804845
In the match() callback, the struct device_driver * should not be changed, so change the function callback to be a const *. This is one step of many towards making the driver core safe to have struct device_driver in read-only memory. Because the match() callback is in all busses, all busses are modified to handle this properly. This does entail switching some container_of() calls to container_of_const() to properly handle the constant *. For some busses, like PCI and USB and HV, the const * is cast away in the match callback as those busses do want to modify those structures at this point in time (they have a local lock in the driver structure.) That will have to be changed in the future if they wish to have their struct device * in read-only-memory. Cc: Rafael J. Wysocki <rafael@kernel.org> Reviewed-by: Alex Elder <elder@kernel.org> Acked-by: Sumit Garg <sumit.garg@linaro.org> Link: https://lore.kernel.org/r/2024070136-wrongdoer-busily-01e8@gregkh Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_PARISC_PARISC_DEVICE_H_
|
|
#define _ASM_PARISC_PARISC_DEVICE_H_
|
|
|
|
#include <linux/device.h>
|
|
|
|
struct parisc_device {
|
|
struct resource hpa; /* Hard Physical Address */
|
|
struct parisc_device_id id;
|
|
struct parisc_driver *driver; /* Driver for this device */
|
|
char name[80]; /* The hardware description */
|
|
int irq;
|
|
int aux_irq; /* Some devices have a second IRQ */
|
|
|
|
char hw_path; /* The module number on this bus */
|
|
unsigned int num_addrs; /* some devices have additional address ranges. */
|
|
unsigned long *addr; /* which will be stored here */
|
|
|
|
#ifdef CONFIG_64BIT
|
|
/* parms for pdc_pat_cell_module() call */
|
|
unsigned long pcell_loc; /* Physical Cell location */
|
|
unsigned long mod_index; /* PAT specific - Misc Module info */
|
|
|
|
/* generic info returned from pdc_pat_cell_module() */
|
|
unsigned long mod_info; /* PAT specific - Misc Module info */
|
|
unsigned long pmod_loc; /* physical Module location */
|
|
unsigned long mod0;
|
|
#endif
|
|
u64 dma_mask; /* DMA mask for I/O */
|
|
struct device dev;
|
|
};
|
|
|
|
struct parisc_driver {
|
|
struct parisc_driver *next;
|
|
char *name;
|
|
const struct parisc_device_id *id_table;
|
|
int (*probe)(struct parisc_device *dev); /* New device discovered */
|
|
void (*remove)(struct parisc_device *dev);
|
|
struct device_driver drv;
|
|
};
|
|
|
|
|
|
#define to_parisc_device(d) container_of(d, struct parisc_device, dev)
|
|
#define to_parisc_driver(d) container_of_const(d, struct parisc_driver, drv)
|
|
#define parisc_parent(d) to_parisc_device(d->dev.parent)
|
|
|
|
static inline const char *parisc_pathname(struct parisc_device *d)
|
|
{
|
|
return dev_name(&d->dev);
|
|
}
|
|
|
|
static inline void
|
|
parisc_set_drvdata(struct parisc_device *d, void *p)
|
|
{
|
|
dev_set_drvdata(&d->dev, p);
|
|
}
|
|
|
|
static inline void *
|
|
parisc_get_drvdata(struct parisc_device *d)
|
|
{
|
|
return dev_get_drvdata(&d->dev);
|
|
}
|
|
|
|
extern const struct bus_type parisc_bus_type;
|
|
|
|
int iosapic_serial_irq(struct parisc_device *dev);
|
|
|
|
#endif /*_ASM_PARISC_PARISC_DEVICE_H_*/
|