forked from Minki/linux
9ebfbd45f9
Unfortunately, one cannot hold on to the struct firmware that request_firmware_nowait() hands off, which is needed in some cases. Allow this by requiring the callback to free it (via release_firmware). Additionally, give it a gfp_t parameter -- all the current users call it from a GFP_KERNEL context so the GFP_ATOMIC isn't necessary. This also marks an API break which is useful in a sense, although that is obviously not the primary purpose of this change. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Marcel Holtmann <marcel@holtmann.org> Cc: Ming Lei <tom.leiming@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Woodhouse <David.Woodhouse@intel.com> Cc: Pavel Roskin <proski@gnu.org> Cc: Abhay Salunke <abhay_salunke@dell.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
#ifndef _LINUX_FIRMWARE_H
|
|
#define _LINUX_FIRMWARE_H
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/compiler.h>
|
|
#include <linux/gfp.h>
|
|
|
|
#define FW_ACTION_NOHOTPLUG 0
|
|
#define FW_ACTION_HOTPLUG 1
|
|
|
|
struct firmware {
|
|
size_t size;
|
|
const u8 *data;
|
|
};
|
|
|
|
struct device;
|
|
|
|
struct builtin_fw {
|
|
char *name;
|
|
void *data;
|
|
unsigned long size;
|
|
};
|
|
|
|
/* We have to play tricks here much like stringify() to get the
|
|
__COUNTER__ macro to be expanded as we want it */
|
|
#define __fw_concat1(x, y) x##y
|
|
#define __fw_concat(x, y) __fw_concat1(x, y)
|
|
|
|
#define DECLARE_BUILTIN_FIRMWARE(name, blob) \
|
|
DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob))
|
|
|
|
#define DECLARE_BUILTIN_FIRMWARE_SIZE(name, blob, size) \
|
|
static const struct builtin_fw __fw_concat(__builtin_fw,__COUNTER__) \
|
|
__used __section(.builtin_fw) = { name, blob, size }
|
|
|
|
#if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE))
|
|
int request_firmware(const struct firmware **fw, const char *name,
|
|
struct device *device);
|
|
int request_firmware_nowait(
|
|
struct module *module, int uevent,
|
|
const char *name, struct device *device, gfp_t gfp, void *context,
|
|
void (*cont)(const struct firmware *fw, void *context));
|
|
|
|
void release_firmware(const struct firmware *fw);
|
|
#else
|
|
static inline int request_firmware(const struct firmware **fw,
|
|
const char *name,
|
|
struct device *device)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
static inline int request_firmware_nowait(
|
|
struct module *module, int uevent,
|
|
const char *name, struct device *device, gfp_t gfp, void *context,
|
|
void (*cont)(const struct firmware *fw, void *context))
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline void release_firmware(const struct firmware *fw)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif
|