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firmware: arm_ffa: Add pointer to the ffa_dev_ops in struct ffa_dev

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Currently ffa_dev_ops_get() is the way to fetch the ffa_dev_ops pointer.
It checks if the ffa_dev structure pointer is valid before returning the
ffa_dev_ops pointer.

Instead, the pointer can be made part of the ffa_dev structure and since
the core driver is incharge of creating ffa_device for each identified
partition, there is no need to check for the validity explicitly if the
pointer is embedded in the structure.

Add the pointer to the ffa_dev_ops in the ffa_dev structure itself and
initialise the same as part of creation of the device.

Link: https://lore.kernel.org/r/20220907145240.1683088-2-sudeep.holla@arm.com
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Sudeep Holla
2022-09-07 15:52:31 +01:00
parent 568035b01c
commit d01387fc16
3 changed files with 9 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
include/linux/arm_ffa.h
View File

@@ -17,6 +17,7 @@ struct ffa_device {
bool mode_32bit;
uuid_t uuid;
struct device dev;
const struct ffa_dev_ops *ops;
};
#define to_ffa_dev(d) container_of(d, struct ffa_device, dev)
@@ -47,7 +48,8 @@ static inline void *ffa_dev_get_drvdata(struct ffa_device *fdev)
}
#if IS_REACHABLE(CONFIG_ARM_FFA_TRANSPORT)
struct ffa_device *ffa_device_register(const uuid_t *uuid, int vm_id);
struct ffa_device *ffa_device_register(const uuid_t *uuid, int vm_id,
const struct ffa_dev_ops *ops);
void ffa_device_unregister(struct ffa_device *ffa_dev);
int ffa_driver_register(struct ffa_driver *driver, struct module *owner,
const char *mod_name);
@@ -57,7 +59,8 @@ const struct ffa_dev_ops *ffa_dev_ops_get(struct ffa_device *dev);
#else
static inline
struct ffa_device *ffa_device_register(const uuid_t *uuid, int vm_id)
struct ffa_device *ffa_device_register(const uuid_t *uuid, int vm_id,
const struct ffa_dev_ops *ops)
{
return NULL;
}