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dm: core: Add logging of some common errors

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Add additional logging so that common errors when finding a device by
ofnode are easier to debug.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2018-06-11 13:07:19 -06:00
parent 964cadc445
commit 31e60ffa05
1 changed files with 12 additions and 2 deletions
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14
drivers/core/uclass.c
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@ -308,6 +308,7 @@ int uclass_find_device_by_ofnode(enum uclass_id id, ofnode node,
struct udevice *dev; struct udevice *dev;
int ret; int ret;
log(LOGC_DM, LOGL_DEBUG, "Looking for %s\n", ofnode_get_name(node));
*devp = NULL; *devp = NULL;
if (!ofnode_valid(node)) if (!ofnode_valid(node))
return -ENODEV; return -ENODEV;
@ -316,13 +317,19 @@ int uclass_find_device_by_ofnode(enum uclass_id id, ofnode node,
return ret; return ret;
list_for_each_entry(dev, &uc->dev_head, uclass_node) { list_for_each_entry(dev, &uc->dev_head, uclass_node) {
log(LOGC_DM, LOGL_DEBUG_CONTENT, " - checking %s\n",
dev->name);
if (ofnode_equal(dev_ofnode(dev), node)) { if (ofnode_equal(dev_ofnode(dev), node)) {
*devp = dev; *devp = dev;
return 0; goto done;
} }
} }
ret = -ENODEV;
return -ENODEV; done:
log(LOGC_DM, LOGL_DEBUG, " - result for %s: %s (ret=%d)\n",
ofnode_get_name(node), *devp ? (*devp)->name : "(none)", ret);
return ret;
} }
#if CONFIG_IS_ENABLED(OF_CONTROL) #if CONFIG_IS_ENABLED(OF_CONTROL)
@ -449,8 +456,11 @@ int uclass_get_device_by_ofnode(enum uclass_id id, ofnode node,
struct udevice *dev; struct udevice *dev;
int ret; int ret;
log(LOGC_DM, LOGL_DEBUG, "Looking for %s\n", ofnode_get_name(node));
*devp = NULL; *devp = NULL;
ret = uclass_find_device_by_ofnode(id, node, &dev); ret = uclass_find_device_by_ofnode(id, node, &dev);
log(LOGC_DM, LOGL_DEBUG, " - result for %s: %s (ret=%d)\n",
ofnode_get_name(node), dev ? dev->name : "(none)", ret);
return uclass_get_device_tail(dev, ret, devp); return uclass_get_device_tail(dev, ret, devp);
} }