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hwspinlock: Remove unused hwspin_lock_get_id()

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hwspin_lock_get_id() has been unused since the original 2011
commit bd9a4c7df2 ("drivers: hwspinlock: add framework")

Remove it and the corresponding docs.

Note that the of_hwspin_lock_get_id() version is still in use,
so leave that alone.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20241215022023.181435-1-linux@treblig.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
This commit is contained in:
Dr. David Alan Gilbert 2024-12-15 02:20:23 +00:00 committed by Bjorn Andersson
parent e9a3682d17
commit fec04edb74
3 changed files with 0 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
Documentation/locking/hwspinlock.rst
View File

@ -301,17 +301,6 @@ The caller should **never** unlock an hwspinlock which is already unlocked.
Doing so is considered a bug (there is no protection against this).
This function will never sleep.
::
int hwspin_lock_get_id(struct hwspinlock *hwlock);
Retrieve id number of a given hwspinlock. This is needed when an
hwspinlock is dynamically assigned: before it can be used to achieve
mutual exclusion with a remote cpu, the id number should be communicated
to the remote task with which we want to synchronize.
Returns the hwspinlock id number, or -EINVAL if hwlock is null.
Typical usage
=============

17
drivers/hwspinlock/hwspinlock_core.c
View File

@ -709,23 +709,6 @@ static int __hwspin_lock_request(struct hwspinlock *hwlock)
return ret;
}
/**
* hwspin_lock_get_id() - retrieve id number of a given hwspinlock
* @hwlock: a valid hwspinlock instance
*
* Returns: the id number of a given @hwlock, or -EINVAL if @hwlock is invalid.
*/
int hwspin_lock_get_id(struct hwspinlock *hwlock)
{
if (!hwlock) {
pr_err("invalid hwlock\n");
return -EINVAL;
}
return hwlock_to_id(hwlock);
}
EXPORT_SYMBOL_GPL(hwspin_lock_get_id);
/**
* hwspin_lock_request_specific() - request for a specific hwspinlock
* @id: index of the specific hwspinlock that is requested

6
include/linux/hwspinlock.h
View File

@ -61,7 +61,6 @@ int hwspin_lock_unregister(struct hwspinlock_device *bank);
struct hwspinlock *hwspin_lock_request_specific(unsigned int id);
int hwspin_lock_free(struct hwspinlock *hwlock);
int of_hwspin_lock_get_id(struct device_node *np, int index);
int hwspin_lock_get_id(struct hwspinlock *hwlock);
int __hwspin_lock_timeout(struct hwspinlock *, unsigned int, int,
unsigned long *);
int __hwspin_trylock(struct hwspinlock *, int, unsigned long *);
@ -131,11 +130,6 @@ static inline int of_hwspin_lock_get_id(struct device_node *np, int index)
return 0;
}
static inline int hwspin_lock_get_id(struct hwspinlock *hwlock)
{
return 0;
}
static inline
int of_hwspin_lock_get_id_byname(struct device_node *np, const char *name)
{