"data" is a void pointer and "args" is "data" after we have casted it to a struct. We care about the size of the struct here. Btw, sizeof(*data) is 1.

Signed-off-by: Dan Carpenter dan.carpenter@oracle.com --- v2: tweaked the commit message

diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c index ca1a7d7..eb9c489 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c @@ -335,7 +335,7 @@ nv50_disp_sync_ctor(struct nouveau_object *parent, struct nv50_disp_dmac *dmac; int ret;

- if (size < sizeof(*data) || args->head > 1) + if (size < sizeof(*args) || args->head > 1) return -EINVAL;

ret = nv50_disp_dmac_create_(parent, engine, oclass, args->pushbuf, @@ -374,7 +374,7 @@ nv50_disp_ovly_ctor(struct nouveau_object *parent, struct nv50_disp_dmac *dmac; int ret;

- if (size < sizeof(*data) || args->head > 1) + if (size < sizeof(*args) || args->head > 1) return -EINVAL;

ret = nv50_disp_dmac_create_(parent, engine, oclass, args->pushbuf, diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c b/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c index 9e38ebf..f28725a 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c @@ -230,7 +230,7 @@ nvd0_disp_sync_ctor(struct nouveau_object *parent, struct nv50_disp_dmac *dmac; int ret;

- if (size < sizeof(*data) || args->head >= priv->head.nr) + if (size < sizeof(*args) || args->head >= priv->head.nr) return -EINVAL;

ret = nv50_disp_dmac_create_(parent, engine, oclass, args->pushbuf, @@ -270,7 +270,7 @@ nvd0_disp_ovly_ctor(struct nouveau_object *parent, struct nv50_disp_dmac *dmac; int ret;

- if (size < sizeof(*data) || args->head >= priv->head.nr) + if (size < sizeof(*args) || args->head >= priv->head.nr) return -EINVAL;

ret = nv50_disp_dmac_create_(parent, engine, oclass, args->pushbuf,