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dm: Move uclass error checking/probing into a function

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Several functions will use this same pattern, so bring it into a function.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2014-07-23 06:55:08 -06:00
parent 093f79ab88
commit 9ca296a1b0
1 changed files with 22 additions and 6 deletions
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28
drivers/core/uclass.c
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@ -158,13 +158,19 @@ int uclass_find_device(enum uclass_id id, int index, struct udevice **devp)
return -ENODEV;
}
int uclass_get_device(enum uclass_id id, int index, struct udevice **devp)
/**
* uclass_get_device_tail() - handle the end of a get_device call
*
* This handles returning an error or probing a device as needed.
*
* @dev: Device that needs to be probed
* @ret: Error to return. If non-zero then the device is not probed
* @devp: Returns the value of 'dev' if there is no error
* @return ret, if non-zero, else the result of the device_probe() call
*/
static int uclass_get_device_tail(struct udevice *dev, int ret,
struct udevice **devp)
{
struct udevice *dev;
int ret;
*devp = NULL;
ret = uclass_find_device(id, index, &dev);
if (ret)
return ret;
@ -177,6 +183,16 @@ int uclass_get_device(enum uclass_id id, int index, struct udevice **devp)
return 0;
}
int uclass_get_device(enum uclass_id id, int index, struct udevice **devp)
{
struct udevice *dev;
int ret;
*devp = NULL;
ret = uclass_find_device(id, index, &dev);
return uclass_get_device_tail(dev, ret, devp);
}
int uclass_first_device(enum uclass_id id, struct udevice **devp)
{
struct uclass *uc;