1SND_LOOKUP_MINOR_DAT(9) Management of Cards and Device SND_LOOKUP_MINOR_DAT(9)
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NAME

6       snd_lookup_minor_data - get user data of a registered device
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SYNOPSIS

9       void * snd_lookup_minor_data(unsigned int minor, int type);
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ARGUMENTS

12       minor
13           the minor number
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15       type
16           device type (SNDRV_DEVICE_TYPE_XXX)
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DESCRIPTION

19       Checks that a minor device with the specified type is registered, and
20       returns its user data pointer.
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22       This function increments the reference counter of the card instance if
23       an associated instance with the given minor number and type is found.
24       The caller must call snd_card_unref appropriately later.
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RETURN

27       The user data pointer if the specified device is found.  NULL
28       otherwise.
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31Kernel Hackers Manual 3.10         June 2019           SND_LOOKUP_MINOR_DAT(9)
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