From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: linux-media@vger.kernel.org
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>,
linux-usb@vger.kernel.org, tglx@linutronix.de,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Hans Verkuil <hverkuil@xs4all.nl>
Subject: [11/27] media: gspca: benq: use usb_fill_int_urb()
Date: Wed, 20 Jun 2018 13:00:49 +0200 [thread overview]
Message-ID: <20180620110105.19955-12-bigeasy@linutronix.de> (raw)
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: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/media/usb/gspca/benq.c | 23 +++++++++++------------
1 file changed, 11 insertions(+), 12 deletions(-)
diff --git a/drivers/media/usb/gspca/benq.c b/drivers/media/usb/gspca/benq.c
index 8a8db5eb6d5f..a59c92cb6a3b 100644
--- a/drivers/media/usb/gspca/benq.c
+++ b/drivers/media/usb/gspca/benq.c
@@ -90,28 +90,27 @@ static int sd_start(struct gspca_dev *gspca_dev)
#define SD_PKT_SZ 64
#define SD_NPKT 32
for (n = 0; n < 4; n++) {
+ void *buf;
+
urb = usb_alloc_urb(SD_NPKT, GFP_KERNEL);
if (!urb)
return -ENOMEM;
gspca_dev->urb[n] = urb;
- urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
- SD_PKT_SZ * SD_NPKT,
- GFP_KERNEL,
- &urb->transfer_dma);
+ buf = usb_alloc_coherent(gspca_dev->dev, SD_PKT_SZ * SD_NPKT,
+ GFP_KERNEL, &urb->transfer_dma);
- if (urb->transfer_buffer == NULL) {
+ if (buf == NULL) {
pr_err("usb_alloc_coherent failed\n");
return -ENOMEM;
}
- urb->dev = gspca_dev->dev;
- urb->context = gspca_dev;
- urb->transfer_buffer_length = SD_PKT_SZ * SD_NPKT;
- urb->pipe = usb_rcvisocpipe(gspca_dev->dev,
- n & 1 ? 0x82 : 0x83);
+ usb_fill_int_urb(urb, gspca_dev->dev,
+ usb_rcvisocpipe(gspca_dev->dev,
+ n & 1 ? 0x82 : 0x83),
+ buf, SD_PKT_SZ * SD_NPKT, sd_isoc_irq,
+ gspca_dev, 1);
+
urb->transfer_flags = URB_ISO_ASAP
| URB_NO_TRANSFER_DMA_MAP;
- urb->interval = 1;
- urb->complete = sd_isoc_irq;
urb->number_of_packets = SD_NPKT;
for (i = 0; i < SD_NPKT; i++) {
urb->iso_frame_desc[i].length = SD_PKT_SZ;
reply other threads:[~2018-06-20 11:00 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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