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greybus: kill off gbuf work queue 

At this point all incoming messages are handled by the operation
code, so this obviates the need for the gbuf workqueue.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
This commit is contained in:
Alex Elder 2014-10-16 06:35:36 -05:00 committed by Greg Kroah-Hartman
parent 574341c672
commit c149f8ffb2
2 changed files with 1 additions and 25 deletions
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25
drivers/staging/greybus/gbuf.c
View File

@ -15,17 +15,11 @@
#include <linux/kref.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include "greybus.h"
static void cport_process_event(struct work_struct *work);
static struct kmem_cache *gbuf_head_cache;
/* Workqueue to handle Greybus buffer completions. */
static struct workqueue_struct *gbuf_workqueue;
/**
* greybus_alloc_gbuf - allocate a greybus buffer
*
@ -57,7 +51,6 @@ struct gbuf *greybus_alloc_gbuf(struct gb_connection *connection,
kref_init(&gbuf->kref);
gbuf->connection = connection;
INIT_WORK(&gbuf->event, cport_process_event);
gbuf->outbound = outbound;
gbuf->complete = complete;
gbuf->context = context;
@ -114,15 +107,6 @@ int greybus_kill_gbuf(struct gbuf *gbuf)
return -ENOMEM;
}
static void cport_process_event(struct work_struct *work)
{
struct gbuf *gbuf = container_of(work, struct gbuf, event);
/* Call the completion handler, then drop our reference */
gbuf->complete(gbuf);
greybus_put_gbuf(gbuf);
}
#define MAX_CPORTS 1024
struct gb_cport_handler {
gbuf_complete_t handler;
@ -196,24 +180,18 @@ void greybus_cport_in(struct greybus_host_device *hd, u16 cport_id,
*/
memcpy(gbuf->transfer_buffer, data, length);
gbuf->actual_length = length;
queue_work(gbuf_workqueue, &gbuf->event);
}
EXPORT_SYMBOL_GPL(greybus_cport_in);
/* Can be called in interrupt context, do the work and get out of here */
void greybus_gbuf_finished(struct gbuf *gbuf)
{
queue_work(gbuf_workqueue, &gbuf->event);
gbuf->complete(gbuf);
}
EXPORT_SYMBOL_GPL(greybus_gbuf_finished);
int gb_gbuf_init(void)
{
gbuf_workqueue = alloc_workqueue("greybus_gbuf", 0, 1);
if (!gbuf_workqueue)
return -ENOMEM;
gbuf_head_cache = kmem_cache_create("gbuf_head_cache",
sizeof(struct gbuf), 0, 0, NULL);
return 0;
@ -221,6 +199,5 @@ int gb_gbuf_init(void)
void gb_gbuf_exit(void)
{
destroy_workqueue(gbuf_workqueue);
kmem_cache_destroy(gbuf_head_cache);
}

1
drivers/staging/greybus/greybus.h
View File

@ -134,7 +134,6 @@ struct gbuf {
bool outbound; /* AP-relative data direction */
void *context;
struct work_struct event;
gbuf_complete_t complete;
};