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drm/nouveau/falcon: use vmalloc to create firwmare copies

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Some firmware images may be large (64K), so using kmalloc memory is
inappropriate for them. Use vmalloc instead, to avoid high-order
allocation failures.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: stable@vger.kernel.org
This commit is contained in:
Ilia Mirkin 2013-12-07 11:42:19 -05:00 committed by Ben Skeggs
parent d96bf437b6
commit 90d6db1635
1 changed files with 15 additions and 5 deletions
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20
drivers/gpu/drm/nouveau/core/engine/falcon.c
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@ -56,6 +56,16 @@ _nouveau_falcon_wr32(struct nouveau_object *object, u64 addr, u32 data)
nv_wr32(falcon, falcon->addr + addr, data);
}
static void *
vmemdup(const void *src, size_t len)
{
void *p = vmalloc(len);
if (p)
memcpy(p, src, len);
return p;
}
int
_nouveau_falcon_init(struct nouveau_object *object)
{
@ -111,7 +121,7 @@ _nouveau_falcon_init(struct nouveau_object *object)
ret = request_firmware(&fw, name, &device->pdev->dev);
if (ret == 0) {
falcon->code.data = kmemdup(fw->data, fw->size, GFP_KERNEL);
falcon->code.data = vmemdup(fw->data, fw->size);
falcon->code.size = fw->size;
falcon->data.data = NULL;
falcon->data.size = 0;
@ -134,7 +144,7 @@ _nouveau_falcon_init(struct nouveau_object *object)
return ret;
}
falcon->data.data = kmemdup(fw->data, fw->size, GFP_KERNEL);
falcon->data.data = vmemdup(fw->data, fw->size);
falcon->data.size = fw->size;
release_firmware(fw);
if (!falcon->data.data)
@ -149,7 +159,7 @@ _nouveau_falcon_init(struct nouveau_object *object)
return ret;
}
falcon->code.data = kmemdup(fw->data, fw->size, GFP_KERNEL);
falcon->code.data = vmemdup(fw->data, fw->size);
falcon->code.size = fw->size;
release_firmware(fw);
if (!falcon->code.data)
@ -235,8 +245,8 @@ _nouveau_falcon_fini(struct nouveau_object *object, bool suspend)
if (!suspend) {
nouveau_gpuobj_ref(NULL, &falcon->core);
if (falcon->external) {
kfree(falcon->data.data);
kfree(falcon->code.data);
vfree(falcon->data.data);
vfree(falcon->code.data);
falcon->code.data = NULL;
}
}