ALSA: usb-audio: convert tasklets to use new tasklet_setup() API

In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.

Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <allen.lkml@gmail.com>
Link: https://lore.kernel.org/r/20200902040221.354941-10-allen.lkml@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index df639fe..e8287a0 100644 (file)
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -344,10 +344,9 @@ static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint *ep)
        spin_unlock_irqrestore(&ep->buffer_lock, flags);
 }
 
-static void snd_usbmidi_out_tasklet(unsigned long data)
+static void snd_usbmidi_out_tasklet(struct tasklet_struct *t)
 {
-       struct snd_usb_midi_out_endpoint *ep =
-               (struct snd_usb_midi_out_endpoint *) data;
+       struct snd_usb_midi_out_endpoint *ep = from_tasklet(ep, t, tasklet);
 
        snd_usbmidi_do_output(ep);
 }
@@ -1441,7 +1440,7 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi *umidi,
        }
 
        spin_lock_init(&ep->buffer_lock);
-       tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep);
+       tasklet_setup(&ep->tasklet, snd_usbmidi_out_tasklet);
        init_waitqueue_head(&ep->drain_wait);
 
        for (i = 0; i < 0x10; ++i)