/*
* Copyright 2017 Red Hat Inc .
*
* Permission is hereby granted , free of charge , to any person obtaining a
* copy of this software and associated documentation files ( the " Software " ) ,
* to deal in the Software without restriction , including without limitation
* the rights to use , copy , modify , merge , publish , distribute , sublicense ,
* and / or sell copies of the Software , and to permit persons to whom the
* Software is furnished to do so , subject to the following conditions :
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND , EXPRESS OR
* IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL
* THE COPYRIGHT HOLDER ( S ) OR AUTHOR ( S ) BE LIABLE FOR ANY CLAIM , DAMAGES OR
* OTHER LIABILITY , WHETHER IN AN ACTION OF CONTRACT , TORT OR OTHERWISE ,
* ARISING FROM , OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE .
*
* Authors : Ben Skeggs < bskeggs @ redhat . com >
*/
#include "head.h"
#include <core/client.h>
#include <nvif/cl0046.h>
#include <nvif/unpack.h>
struct nvkm_head *
nvkm_head_find(struct nvkm_disp *disp, int id)
{
struct nvkm_head *head;
list_for_each_entry(head, &disp->heads, head) {
if (head->id == id)
return head;
}
return NULL;
}
void
nvkm_head_del(struct nvkm_head **phead)
{
struct nvkm_head *head = *phead;
if (head) {
HEAD_DBG(head, "dtor" );
list_del(&head->head);
kfree(*phead);
*phead = NULL;
}
}
int
nvkm_head_new_(const struct nvkm_head_func *func,
struct nvkm_disp *disp, int id)
{
struct nvkm_head *head;
if (!(head = kzalloc(sizeof (*head), GFP_KERNEL)))
return -ENOMEM;
head->func = func;
head->disp = disp;
head->id = id;
list_add_tail(&head->head, &disp->heads);
HEAD_DBG(head, "ctor" );
return 0 ;
}
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