snd_lookup_minor_data
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## Name

snd_lookup_minor_data — get user data of a registered device

## Synopsis

`void * snd_lookup_minor_data (` | unsigned int minor,
| int type`)`;

## Arguments

`minor`

  the minor number

`type`

  device type (SNDRV_DEVICE_TYPE_XXX)

## Description

Checks that a minor device with the specified type is registered, and returns its user data pointer.

This function increments the reference counter of the card instance if an associated instance with the given minor number and type is found. The caller must call `snd_card_unref` appropriately later.

## Return

The user data pointer if the specified device is found. `NULL` otherwise.

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