ALSA: hdspm - Fix locking in snd_hdspm_midi_input_read
For the MIDI part, we need to acquire (and release) the hmidi->lock, access to the global hdspm structure is serialized through hmidi->hdspm->lock instead. Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -1639,12 +1639,14 @@ static int snd_hdspm_midi_input_read (struct hdspm_midi *hmidi)
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}
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}
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hmidi->pending = 0;
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spin_unlock_irqrestore(&hmidi->lock, flags);
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spin_lock_irqsave(&hmidi->hdspm->lock, flags);
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hmidi->hdspm->control_register |= hmidi->ie;
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hdspm_write(hmidi->hdspm, HDSPM_controlRegister,
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hmidi->hdspm->control_register);
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spin_unlock_irqrestore(&hmidi->hdspm->lock, flags);
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spin_unlock_irqrestore (&hmidi->lock, flags);
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return snd_hdspm_midi_output_write (hmidi);
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}
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