Using usb_fill_int_urb() helps to find code which initializes an URB. A grep for members of the struct (like ->complete) reveal lots of other things, too.
Cc: Daniel Mack <[email protected]> Cc: Jaroslav Kysela <[email protected]> Cc: Takashi Iwai <[email protected]> Signed-off-by: Sebastian Andrzej Siewior <[email protected]> --- sound/usb/caiaq/audio.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c index 15344d39a6cd..e10d5790099f 100644 --- a/sound/usb/caiaq/audio.c +++ b/sound/usb/caiaq/audio.c @@ -736,16 +736,17 @@ static struct urb **alloc_urbs(struct snd_usb_caiaqdev *cdev, int dir, int *ret) } for (i = 0; i < N_URBS; i++) { + void *buf; + urbs[i] = usb_alloc_urb(FRAMES_PER_URB, GFP_KERNEL); if (!urbs[i]) { *ret = -ENOMEM; return urbs; } - urbs[i]->transfer_buffer = - kmalloc_array(BYTES_PER_FRAME, FRAMES_PER_URB, - GFP_KERNEL); - if (!urbs[i]->transfer_buffer) { + buf = kmalloc_array(BYTES_PER_FRAME, FRAMES_PER_URB, + GFP_KERNEL); + if (!buf) { *ret = -ENOMEM; return urbs; } @@ -758,15 +759,13 @@ static struct urb **alloc_urbs(struct snd_usb_caiaqdev *cdev, int dir, int *ret) iso->length = BYTES_PER_FRAME; } - urbs[i]->dev = usb_dev; - urbs[i]->pipe = pipe; - urbs[i]->transfer_buffer_length = FRAMES_PER_URB - * BYTES_PER_FRAME; - urbs[i]->context = &cdev->data_cb_info[i]; - urbs[i]->interval = 1; + usb_fill_int_urb(urbs[i], usb_dev, pipe, buf, + FRAMES_PER_URB * BYTES_PER_FRAME, + (dir == SNDRV_PCM_STREAM_CAPTURE) ? + read_completed : write_completed, + &cdev->data_cb_info[i], 1); + urbs[i]->number_of_packets = FRAMES_PER_URB; - urbs[i]->complete = (dir == SNDRV_PCM_STREAM_CAPTURE) ? - read_completed : write_completed; } *ret = 0; -- 2.17.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
