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drm/nouveau/mc: fix race condition between constructor and request_irq() 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2013-08-21 10:13:30 +10:00
parent 0ff42c5af6
commit 6ff8c76a56
7 changed files with 14 additions and 14 deletions
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7
drivers/gpu/drm/nouveau/core/include/subdev/mc.h
View File

@ -20,8 +20,8 @@ nouveau_mc(void *obj)
return (void *)nv_device(obj)->subdev[NVDEV_SUBDEV_MC];
}
#define nouveau_mc_create(p,e,o,d) \
nouveau_mc_create_((p), (e), (o), sizeof(**d), (void **)d)
#define nouveau_mc_create(p,e,o,m,d) \
nouveau_mc_create_((p), (e), (o), (m), sizeof(**d), (void **)d)
#define nouveau_mc_destroy(p) ({ \
struct nouveau_mc *pmc = (p); _nouveau_mc_dtor(nv_object(pmc)); \
})
@ -33,7 +33,8 @@ nouveau_mc(void *obj)
})
int nouveau_mc_create_(struct nouveau_object *, struct nouveau_object *,
struct nouveau_oclass *, int, void **);
struct nouveau_oclass *, const struct nouveau_mc_intr *,
int, void **);
void _nouveau_mc_dtor(struct nouveau_object *);
int _nouveau_mc_init(struct nouveau_object *);
int _nouveau_mc_fini(struct nouveau_object *, bool);

6
drivers/gpu/drm/nouveau/core/subdev/mc/base.c
View File

@ -80,7 +80,9 @@ _nouveau_mc_dtor(struct nouveau_object *object)
int
nouveau_mc_create_(struct nouveau_object *parent, struct nouveau_object *engine,
struct nouveau_oclass *oclass, int length, void **pobject)
struct nouveau_oclass *oclass,
const struct nouveau_mc_intr *intr_map,
int length, void **pobject)
{
struct nouveau_device *device = nv_device(parent);
struct nouveau_mc *pmc;
@ -92,6 +94,8 @@ nouveau_mc_create_(struct nouveau_object *parent, struct nouveau_object *engine,
if (ret)
return ret;
pmc->intr_map = intr_map;
ret = request_irq(device->pdev->irq, nouveau_mc_intr,
IRQF_SHARED, "nouveau", pmc);
if (ret < 0)

3
drivers/gpu/drm/nouveau/core/subdev/mc/nv04.c
View File

@ -50,12 +50,11 @@ nv04_mc_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nv04_mc_priv *priv;
int ret;
ret = nouveau_mc_create(parent, engine, oclass, &priv);
ret = nouveau_mc_create(parent, engine, oclass, nv04_mc_intr, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
priv->base.intr_map = nv04_mc_intr;
return 0;
}

3
drivers/gpu/drm/nouveau/core/subdev/mc/nv44.c
View File

@ -36,12 +36,11 @@ nv44_mc_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nv44_mc_priv *priv;
int ret;
ret = nouveau_mc_create(parent, engine, oclass, &priv);
ret = nouveau_mc_create(parent, engine, oclass, nv04_mc_intr, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
priv->base.intr_map = nv04_mc_intr;
return 0;
}

3
drivers/gpu/drm/nouveau/core/subdev/mc/nv50.c
View File

@ -53,12 +53,11 @@ nv50_mc_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nv50_mc_priv *priv;
int ret;
ret = nouveau_mc_create(parent, engine, oclass, &priv);
ret = nouveau_mc_create(parent, engine, oclass, nv50_mc_intr, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
priv->base.intr_map = nv50_mc_intr;
return 0;
}

3
drivers/gpu/drm/nouveau/core/subdev/mc/nv98.c
View File

@ -54,12 +54,11 @@ nv98_mc_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nv98_mc_priv *priv;
int ret;
ret = nouveau_mc_create(parent, engine, oclass, &priv);
ret = nouveau_mc_create(parent, engine, oclass, nv98_mc_intr, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
priv->base.intr_map = nv98_mc_intr;
return 0;
}

3
drivers/gpu/drm/nouveau/core/subdev/mc/nvc0.c
View File

@ -57,12 +57,11 @@ nvc0_mc_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nvc0_mc_priv *priv;
int ret;
ret = nouveau_mc_create(parent, engine, oclass, &priv);
ret = nouveau_mc_create(parent, engine, oclass, nvc0_mc_intr, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
priv->base.intr_map = nvc0_mc_intr;
return 0;
}