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drm/nouveau: fix nouveau_client allocation failure path 

Depending on the point of failure, freed object would be returned
or memory leak would happen.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Marcin Slusarz 2012-12-10 21:59:52 +01:00 committed by Ben Skeggs
parent 82c805abb2
commit dd5700ea98
3 changed files with 10 additions and 4 deletions
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4
drivers/gpu/drm/nouveau/core/core/client.c
View File

@ -66,10 +66,8 @@ nouveau_client_create_(const char *name, u64 devname, const char *cfg,
ret = nouveau_handle_create(nv_object(client), ~0, ~0,
nv_object(client), &client->root);
if (ret) {
nouveau_namedb_destroy(&client->base);
if (ret)
return ret;
}
/* prevent init/fini being called, os in in charge of this */
atomic_set(&nv_object(client)->usecount, 2);

3
drivers/gpu/drm/nouveau/core/include/core/client.h
View File

@ -36,6 +36,9 @@ nouveau_client(void *obj)
int nouveau_client_create_(const char *name, u64 device, const char *cfg,
const char *dbg, int, void **);
#define nouveau_client_destroy(p) \
nouveau_namedb_destroy(&(p)->base)
int nouveau_client_init(struct nouveau_client *);
int nouveau_client_fini(struct nouveau_client *, bool suspend);

7
drivers/gpu/drm/nouveau/nouveau_drm.c
View File

@ -84,11 +84,16 @@ nouveau_cli_create(struct pci_dev *pdev, const char *name,
struct nouveau_cli *cli;
int ret;
*pcli = NULL;
ret = nouveau_client_create_(name, nouveau_name(pdev), nouveau_config,
nouveau_debug, size, pcli);
cli = *pcli;
if (ret)
if (ret) {
if (cli)
nouveau_client_destroy(&cli->base);
*pcli = NULL;
return ret;
}
mutex_init(&cli->mutex);
return 0;