rt2x00: fix clk_get call

clk_get() takes two arguments and might return ERR_PTR(), so we
have to nullify pointer on that case, to do not break further call
to clk_get_rate().

Reported-by: Felix Fietkau <nbd@nbd.name>
Fixes: 34db70b92fae ("rt2x00: add copy of clk for soc devices")
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

path: root/sound/usb/caiaq/midi.h

#ifndef CAIAQ_MIDI_H
#define CAIAQ_MIDI_H

int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *cdev);
void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *cdev,
				     int port, const char *buf, int len);
void snd_usb_caiaq_midi_output_done(struct urb *urb);

#endif /* CAIAQ_MIDI_H */