SYNOPSIS

int snd_ac97_update_bits(struct snd_ac97 * ac97, unsigned short reg, unsigned short mask, unsigned short value);

ARGUMENTS

ac97

the ac97 instance

reg

the register to change

mask

the bit-mask to change

value

the value to set

DESCRIPTION

Updates the masked-bits on the given register only when the value is changed.

RETURN

1 if the bits are changed, 0 if no change, or a negative code on failure.

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