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drm/nouveau/core: prepare printk for NULL engine pointer on device object tree

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The [  SUBDEV] specified in log output will be a bit different for
children of a subdev now.  Previously this reports whatever subdev
is specified by object.engine, now it reports the subdev that owns
the object (so, up object.parent somewhere).

Later patches will append object and class identifiers to messages,
which will help clarify where it's coming from.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2014-12-05 11:03:18 +10:00
parent e138c7d8fc
commit 0527a04fe8
1 changed files with 13 additions and 8 deletions
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21
drivers/gpu/drm/nouveau/core/core/printk.c
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@ -60,21 +60,26 @@ nv_printk_(struct nouveau_object *object, int level, const char *fmt, ...)
}
if (object && !nv_iclass(object, NV_CLIENT_CLASS)) {
struct nouveau_object *device = object;
struct nouveau_object *subdev = object;
struct nouveau_object *device;
struct nouveau_object *subdev;
char obuf[64], *ofmt = "";
if (object->engine) {
subdev = object;
while (subdev && !nv_iclass(subdev, NV_SUBDEV_CLASS))
subdev = subdev->parent;
if (!subdev)
subdev = object->engine;
device = subdev;
if (device->parent)
device = device->parent;
if (object != subdev) {
snprintf(obuf, sizeof(obuf), "[0x%08x]",
nv_hclass(object));
ofmt = obuf;
subdev = object->engine;
device = object->engine;
}
if (subdev->parent)
device = subdev->parent;
if (level > nv_subdev(subdev)->debug)
return;