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powerpc/opal: Make __opal_async_{get, release}_token() static 

There are no callers of both __opal_async_get_token() and
__opal_async_release_token().

This patch also removes the possibility of "emergency through
synchronous call to __opal_async_get_token()" as such it makes more
sense to initialise opal_sync_sem for the maximum number of async
tokens.

Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Cyril Bur 2017-11-03 13:41:41 +11:00 committed by Michael Ellerman
parent efe6941450
commit 59cf9a1cfc
2 changed files with 3 additions and 9 deletions
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2
arch/powerpc/include/asm/opal.h
View File

@ -306,9 +306,7 @@ extern void opal_notifier_enable(void);
extern void opal_notifier_disable(void);
extern void opal_notifier_update_evt(uint64_t evt_mask, uint64_t evt_val);
extern int __opal_async_get_token(void);
extern int opal_async_get_token_interruptible(void);
extern int __opal_async_release_token(int token);
extern int opal_async_release_token(int token);
extern int opal_async_wait_response(uint64_t token, struct opal_msg *msg);
extern int opal_get_sensor_data(u32 sensor_hndl, u32 *sensor_data);

10
arch/powerpc/platforms/powernv/opal-async.c
View File

@ -33,7 +33,7 @@ static struct semaphore opal_async_sem;
static struct opal_msg *opal_async_responses;
static unsigned int opal_max_async_tokens;
int __opal_async_get_token(void)
static int __opal_async_get_token(void)
{
unsigned long flags;
int token;
@ -73,7 +73,7 @@ int opal_async_get_token_interruptible(void)
}
EXPORT_SYMBOL_GPL(opal_async_get_token_interruptible);
int __opal_async_release_token(int token)
static int __opal_async_release_token(int token)
{
unsigned long flags;
@ -199,11 +199,7 @@ int __init opal_async_comp_init(void)
goto out_opal_node;
}
/* Initialize to 1 less than the maximum tokens available, as we may
* require to pop one during emergency through synchronous call to
* __opal_async_get_token()
*/
sema_init(&opal_async_sem, opal_max_async_tokens - 1);
sema_init(&opal_async_sem, opal_max_async_tokens);
out_opal_node:
of_node_put(opal_node);