Re: [PATCH v5 12/12] media: uvcvideo: use dev_dbg() for uvc_trace()

Laurent Pinchart
2020-12-22T08:52:48Z

Hi Ricardo,

Thank you for the patch.

On Mon, Dec 21, 2020 at 05:48:19PM +0100, Ricardo Ribalda wrote:
> Instead of calling prink() inside uvc_trace, use dev_dbg(), which add

You're using dev_printk(KERN_DEBUG), which is right, but doesn't match
the commit message.

> context to the output.
>
> Now that we are at it, regroup the strings so the messages can be easily
> "grepable".
>
> Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
> ---
> drivers/media/usb/uvc/uvc_ctrl.c | 66 ++++---
> drivers/media/usb/uvc/uvc_driver.c | 298 +++++++++++++++--------------
> drivers/media/usb/uvc/uvc_isight.c | 16 +-
> drivers/media/usb/uvc/uvc_queue.c | 9 +-
> drivers/media/usb/uvc/uvc_status.c | 19 +-
> drivers/media/usb/uvc/uvc_v4l2.c | 53 +++--
> drivers/media/usb/uvc/uvc_video.c | 72 +++----
> drivers/media/usb/uvc/uvcvideo.h | 11 +-
> 8 files changed, 291 insertions(+), 253 deletions(-)
>
> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> index 1f1323a649fb..febe20e2887d 100644
> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> @@ -906,8 +906,8 @@ static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,
> }
>
> if (ctrl == NULL && !next)
> - uvc_trace(UVC_TRACE_CONTROL, "Control 0x%08x not found.\n",
> - v4l2_id);
> + uvc_trace(chain->dev, UVC_TRACE_CONTROL,
> + "Control 0x%08x not found.\n", v4l2_id);
>
> return ctrl;
> }
> @@ -1828,9 +1828,9 @@ static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
> ret = uvc_query_ctrl(dev, UVC_GET_LEN, ctrl->entity->id, dev->intfnum,
> info->selector, data, 2);
> if (ret < 0) {
> - uvc_trace(UVC_TRACE_CONTROL,
> + uvc_trace(dev, UVC_TRACE_CONTROL,
> "GET_LEN failed on control %pUl/%u (%d).\n",
> - info->entity, info->selector, ret);
> + info->entity, info->selector, ret);
> goto done;
> }
>
> @@ -1841,7 +1841,7 @@ static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
>
> ret = uvc_ctrl_get_flags(dev, ctrl, info);
> if (ret < 0) {
> - uvc_trace(UVC_TRACE_CONTROL,
> + uvc_trace(dev, UVC_TRACE_CONTROL,
> "Failed to get flags for control %pUl/%u (%d).\n",
> info->entity, info->selector, ret);
> goto done;
> @@ -1849,8 +1849,8 @@ static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
>
> uvc_ctrl_fixup_xu_info(dev, ctrl, info);
>
> - uvc_trace(UVC_TRACE_CONTROL, "XU control %pUl/%u queried: len %u, "
> - "flags { get %u set %u auto %u }.\n",
> + uvc_trace(dev, UVC_TRACE_CONTROL,
> + "XU control %pUl/%u queried: len %u, flags { get %u set %u auto %u }.\n",
> info->entity, info->selector, info->size,
> (info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0,
> (info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0,
> @@ -1879,9 +1879,10 @@ static int uvc_ctrl_init_xu_ctrl(struct uvc_device *dev,
>
> ret = uvc_ctrl_add_info(dev, ctrl, &info);
> if (ret < 0)
> - uvc_trace(UVC_TRACE_CONTROL, "Failed to initialize control "
> - "%pUl/%u on device %s entity %u\n", info.entity,
> - info.selector, dev->udev->devpath, ctrl->entity->id);
> + uvc_trace(dev, UVC_TRACE_CONTROL,
> + "Failed to initialize control %pUl/%u on device %s entity %u\n",
> + info.entity, info.selector, dev->udev->devpath,
> + ctrl->entity->id);
>
> return ret;
> }
> @@ -1909,8 +1910,8 @@ int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
> }
>
> if (!found) {
> - uvc_trace(UVC_TRACE_CONTROL, "Extension unit %u not found.\n",
> - xqry->unit);
> + uvc_trace(chain->dev, UVC_TRACE_CONTROL,
> + "Extension unit %u not found.\n", xqry->unit);
> return -ENOENT;
> }
>
> @@ -1925,8 +1926,9 @@ int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
> }
>
> if (!found) {
> - uvc_trace(UVC_TRACE_CONTROL, "Control %pUl/%u not found.\n",
> - entity->guid, xqry->selector);
> + uvc_trace(chain->dev, UVC_TRACE_CONTROL,
> + "Control %pUl/%u not found.\n", entity->guid,
> + xqry->selector);
> return -ENOENT;
> }
>
> @@ -2074,9 +2076,10 @@ static int uvc_ctrl_add_info(struct uvc_device *dev, struct uvc_control *ctrl,
>
> ctrl->initialized = 1;
>
> - uvc_trace(UVC_TRACE_CONTROL, "Added control %pUl/%u to device %s "
> - "entity %u\n", ctrl->info.entity, ctrl->info.selector,
> - dev->udev->devpath, ctrl->entity->id);
> + uvc_trace(dev, UVC_TRACE_CONTROL,
> + "Added control %pUl/%u to device %s entity %u\n",
> + ctrl->info.entity, ctrl->info.selector, dev->udev->devpath,
> + ctrl->entity->id);
>
> return 0;
> }
> @@ -2113,9 +2116,9 @@ static int __uvc_ctrl_add_mapping(struct uvc_device *dev,
> map->set = uvc_set_le_value;
>
> list_add_tail(&map->list, &ctrl->info.mappings);
> - uvc_trace(UVC_TRACE_CONTROL,
> - "Adding mapping '%s' to control %pUl/%u.\n",
> - map->name, ctrl->info.entity, ctrl->info.selector);
> + uvc_trace(dev, UVC_TRACE_CONTROL,
> + "Adding mapping '%s' to control %pUl/%u.\n",
> + map->name, ctrl->info.entity, ctrl->info.selector);
>
> return 0;
> }
> @@ -2131,9 +2134,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
> int ret;
>
> if (mapping->id & ~V4L2_CTRL_ID_MASK) {
> - uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', control "
> - "id 0x%08x is invalid.\n", mapping->name,
> - mapping->id);
> + uvc_trace(dev, UVC_TRACE_CONTROL,
> + "Can't add mapping '%s', control id 0x%08x is invalid.\n",
> + mapping->name, mapping->id);
> return -EINVAL;
> }
>
> @@ -2178,9 +2181,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
>
> list_for_each_entry(map, &ctrl->info.mappings, list) {
> if (mapping->id == map->id) {
> - uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', "
> - "control id 0x%08x already exists.\n",
> - mapping->name, mapping->id);
> + uvc_trace(dev, UVC_TRACE_CONTROL,
> + "Can't add mapping '%s', control id 0x%08x already exists.\n",
> + mapping->name, mapping->id);
> ret = -EEXIST;
> goto done;
> }
> @@ -2189,9 +2192,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
> /* Prevent excess memory consumption */
> if (atomic_inc_return(&dev->nmappings) > UVC_MAX_CONTROL_MAPPINGS) {
> atomic_dec(&dev->nmappings);
> - uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', maximum "
> - "mappings count (%u) exceeded.\n", mapping->name,
> - UVC_MAX_CONTROL_MAPPINGS);
> + uvc_trace(dev, UVC_TRACE_CONTROL,
> + "Can't add mapping '%s', maximum mappings count (%u) exceeded.\n",
> + mapping->name, UVC_MAX_CONTROL_MAPPINGS);
> ret = -ENOMEM;
> goto done;
> }
> @@ -2260,8 +2263,9 @@ static void uvc_ctrl_prune_entity(struct uvc_device *dev,
> !uvc_test_bit(controls, blacklist[i].index))
> continue;
>
> - uvc_trace(UVC_TRACE_CONTROL, "%u/%u control is black listed, "
> - "removing it.\n", entity->id, blacklist[i].index);
> + uvc_trace(dev, UVC_TRACE_CONTROL,
> + "%u/%u control is black listed, removing it.\n",
> + entity->id, blacklist[i].index);
>
> uvc_clear_bit(controls, blacklist[i].index);
> }
> diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
> index ea64c716f1f3..f857bb9b7755 100644
> --- a/drivers/media/usb/uvc/uvc_driver.c
> +++ b/drivers/media/usb/uvc/uvc_driver.c
> @@ -521,10 +521,10 @@ static int uvc_parse_format(struct uvc_device *dev,
> case UVC_VS_FORMAT_FRAME_BASED:
> n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
> if (buflen < n) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
> - "interface %d FORMAT error\n",
> - dev->udev->devnum,
> - alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videostreaming interface %d FORMAT error\n",
> + dev->udev->devnum,
> + alts->desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -585,10 +585,10 @@ static int uvc_parse_format(struct uvc_device *dev,
>
> case UVC_VS_FORMAT_MJPEG:
> if (buflen < 11) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
> - "interface %d FORMAT error\n",
> - dev->udev->devnum,
> - alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videostreaming interface %d FORMAT error\n",
> + dev->udev->devnum,
> + alts->desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -601,10 +601,10 @@ static int uvc_parse_format(struct uvc_device *dev,
>
> case UVC_VS_FORMAT_DV:
> if (buflen < 9) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
> - "interface %d FORMAT error\n",
> - dev->udev->devnum,
> - alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videostreaming interface %d FORMAT error\n",
> + dev->udev->devnum,
> + alts->desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -619,9 +619,9 @@ static int uvc_parse_format(struct uvc_device *dev,
> strscpy(format->name, "HD-DV", sizeof(format->name));
> break;
> default:
> - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
> - "interface %d: unknown DV format %u\n",
> - dev->udev->devnum,
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videostreaming interface %d: unknown DV format %u\n",
> + dev->udev->devnum,
> alts->desc.bInterfaceNumber, buffer[8]);
> return -EINVAL;
> }
> @@ -648,14 +648,14 @@ static int uvc_parse_format(struct uvc_device *dev,
> case UVC_VS_FORMAT_STREAM_BASED:
> /* Not supported yet. */
> default:
> - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
> - "interface %d unsupported format %u\n",
> - dev->udev->devnum, alts->desc.bInterfaceNumber,
> - buffer[2]);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videostreaming interface %d unsupported format %u\n",
> + dev->udev->devnum, alts->desc.bInterfaceNumber,
> + buffer[2]);
> return -EINVAL;
> }
>
> - uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name);
> + uvc_trace(dev, UVC_TRACE_DESCR, "Found format %s.\n", format->name);
>
> buflen -= buffer[0];
> buffer += buffer[0];
> @@ -674,9 +674,10 @@ static int uvc_parse_format(struct uvc_device *dev,
> n = n ? n : 3;
>
> if (buflen < 26 + 4*n) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
> - "interface %d FRAME error\n", dev->udev->devnum,
> - alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videostreaming interface %d FRAME error\n",
> + dev->udev->devnum,
> + alts->desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -738,10 +739,10 @@ static int uvc_parse_format(struct uvc_device *dev,
> frame->dwDefaultFrameInterval;
> }
>
> - uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n",
> - frame->wWidth, frame->wHeight,
> - 10000000/frame->dwDefaultFrameInterval,
> - (100000000/frame->dwDefaultFrameInterval)%10);
> + uvc_trace(dev, UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n",
> + frame->wWidth, frame->wHeight,
> + 10000000 / frame->dwDefaultFrameInterval,
> + (100000000 / frame->dwDefaultFrameInterval) % 10);
>
> format->nframes++;
> buflen -= buffer[0];
> @@ -757,10 +758,10 @@ static int uvc_parse_format(struct uvc_device *dev,
> if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
> buffer[2] == UVC_VS_COLORFORMAT) {
> if (buflen < 6) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
> - "interface %d COLORFORMAT error\n",
> - dev->udev->devnum,
> - alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videostreaming interface %d COLORFORMAT error\n",
> + dev->udev->devnum,
> + alts->desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -792,16 +793,18 @@ static int uvc_parse_streaming(struct uvc_device *dev,
>
> if (intf->cur_altsetting->desc.bInterfaceSubClass
> != UVC_SC_VIDEOSTREAMING) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a "
> - "video streaming interface\n", dev->udev->devnum,
> - intf->altsetting[0].desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d interface %d isn't a video streaming interface\n",
> + dev->udev->devnum,
> + intf->altsetting[0].desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already "
> - "claimed\n", dev->udev->devnum,
> - intf->altsetting[0].desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d interface %d is already claimed\n",
> + dev->udev->devnum,
> + intf->altsetting[0].desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -823,8 +826,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
>
> if (ep->extralen > 2 &&
> ep->extra[1] == USB_DT_CS_INTERFACE) {
> - uvc_trace(UVC_TRACE_DESCR, "trying extra data "
> - "from endpoint %u.\n", i);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "trying extra data from endpoint %u.\n",
> + i);
> buffer = alts->endpoint[i].extra;
> buflen = alts->endpoint[i].extralen;
> break;
> @@ -839,8 +843,8 @@ static int uvc_parse_streaming(struct uvc_device *dev,
> }
>
> if (buflen <= 2) {
> - uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming "
> - "interface descriptors found.\n");
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "no class-specific streaming interface descriptors found.\n");
> goto error;
> }
>
> @@ -857,9 +861,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
> break;
>
> default:
> - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
> - "%d HEADER descriptor not found.\n", dev->udev->devnum,
> - alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videostreaming interface %d HEADER descriptor not found.\n",
> + dev->udev->devnum, alts->desc.bInterfaceNumber);
> goto error;
> }
>
> @@ -867,9 +871,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
> n = buflen >= size ? buffer[size-1] : 0;
>
> if (buflen < size + p*n) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
> - "interface %d HEADER descriptor is invalid.\n",
> - dev->udev->devnum, alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videostreaming interface %d HEADER descriptor is invalid.\n",
> + dev->udev->devnum, alts->desc.bInterfaceNumber);
> goto error;
> }
>
> @@ -919,10 +923,10 @@ static int uvc_parse_streaming(struct uvc_device *dev,
>
> case UVC_VS_FORMAT_MPEG2TS:
> case UVC_VS_FORMAT_STREAM_BASED:
> - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
> - "interface %d FORMAT %u is not supported.\n",
> - dev->udev->devnum,
> - alts->desc.bInterfaceNumber, _buffer[2]);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videostreaming interface %d FORMAT %u is not supported.\n",
> + dev->udev->devnum,
> + alts->desc.bInterfaceNumber, _buffer[2]);
> break;
>
> case UVC_VS_FRAME_UNCOMPRESSED:
> @@ -944,9 +948,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
> }
>
> if (nformats == 0) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
> - "%d has no supported formats defined.\n",
> - dev->udev->devnum, alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videostreaming interface %d has no supported formats defined.\n",
> + dev->udev->devnum, alts->desc.bInterfaceNumber);
> goto error;
> }
>
> @@ -993,9 +997,10 @@ static int uvc_parse_streaming(struct uvc_device *dev,
> }
>
> if (buflen)
> - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
> - "%d has %u bytes of trailing descriptor garbage.\n",
> - dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage.\n",
> + dev->udev->devnum, alts->desc.bInterfaceNumber,
> + buflen);
>
> /* Parse the alternate settings to find the maximum bandwidth. */
> for (i = 0; i < intf->num_altsetting; ++i) {
> @@ -1128,9 +1133,9 @@ static int uvc_parse_vendor_control(struct uvc_device *dev,
> n = buflen >= 25 + p ? buffer[22+p] : 0;
>
> if (buflen < 25 + p + 2*n) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
> - "interface %d EXTENSION_UNIT error\n",
> - udev->devnum, alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videocontrol interface %d EXTENSION_UNIT error\n",
> + udev->devnum, alts->desc.bInterfaceNumber);
> break;
> }
>
> @@ -1177,9 +1182,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
> n = buflen >= 12 ? buffer[11] : 0;
>
> if (buflen < 12 + n) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
> - "interface %d HEADER error\n", udev->devnum,
> - alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videocontrol interface %d HEADER error\n",
> + udev->devnum, alts->desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -1190,9 +1195,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
> for (i = 0; i < n; ++i) {
> intf = usb_ifnum_to_if(udev, buffer[12+i]);
> if (intf == NULL) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d "
> - "interface %d doesn't exists\n",
> - udev->devnum, i);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d interface %d doesn't exists\n",
> + udev->devnum, i);
> continue;
> }
>
> @@ -1202,9 +1207,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
>
> case UVC_VC_INPUT_TERMINAL:
> if (buflen < 8) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
> - "interface %d INPUT_TERMINAL error\n",
> - udev->devnum, alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videocontrol interface %d INPUT_TERMINAL error\n",
> + udev->devnum, alts->desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -1221,11 +1226,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
> */
> type = get_unaligned_le16(&buffer[4]);
> if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
> - "interface %d INPUT_TERMINAL %d has invalid "
> - "type 0x%04x, skipping\n", udev->devnum,
> - alts->desc.bInterfaceNumber,
> - buffer[3], type);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
> + udev->devnum, alts->desc.bInterfaceNumber,
> + buffer[3], type);
> return 0;
> }
>
> @@ -1244,9 +1248,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
> }
>
> if (buflen < len + n + p) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
> - "interface %d INPUT_TERMINAL error\n",
> - udev->devnum, alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videocontrol interface %d INPUT_TERMINAL error\n",
> + udev->devnum, alts->desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -1291,9 +1295,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
>
> case UVC_VC_OUTPUT_TERMINAL:
> if (buflen < 9) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
> - "interface %d OUTPUT_TERMINAL error\n",
> - udev->devnum, alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videocontrol interface %d OUTPUT_TERMINAL error\n",
> + udev->devnum, alts->desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -1302,10 +1306,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
> */
> type = get_unaligned_le16(&buffer[4]);
> if ((type & 0xff00) == 0) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
> - "interface %d OUTPUT_TERMINAL %d has invalid "
> - "type 0x%04x, skipping\n", udev->devnum,
> - alts->desc.bInterfaceNumber, buffer[3], type);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
> + udev->devnum, alts->desc.bInterfaceNumber,
> + buffer[3], type);
> return 0;
> }
>
> @@ -1329,9 +1333,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
> p = buflen >= 5 ? buffer[4] : 0;
>
> if (buflen < 5 || buflen < 6 + p) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
> - "interface %d SELECTOR_UNIT error\n",
> - udev->devnum, alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videocontrol interface %d SELECTOR_UNIT error\n",
> + udev->devnum, alts->desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -1355,9 +1359,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
> p = dev->uvc_version >= 0x0110 ? 10 : 9;
>
> if (buflen < p + n) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
> - "interface %d PROCESSING_UNIT error\n",
> - udev->devnum, alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videocontrol interface %d PROCESSING_UNIT error\n",
> + udev->devnum, alts->desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -1388,9 +1392,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
> n = buflen >= 24 + p ? buffer[22+p] : 0;
>
> if (buflen < 24 + p + n) {
> - uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
> - "interface %d EXTENSION_UNIT error\n",
> - udev->devnum, alts->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "device %d videocontrol interface %d EXTENSION_UNIT error\n",
> + udev->devnum, alts->desc.bInterfaceNumber);
> return -EINVAL;
> }
>
> @@ -1415,8 +1419,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
> break;
>
> default:
> - uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE "
> - "descriptor (%u)\n", buffer[2]);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "Found an unknown CS_INTERFACE descriptor (%u)\n",
> + buffer[2]);
> break;
> }
>
> @@ -1461,8 +1466,9 @@ static int uvc_parse_control(struct uvc_device *dev)
> if (usb_endpoint_is_int_in(desc) &&
> le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
> desc->bInterval != 0) {
> - uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint "
> - "(addr %02x).\n", desc->bEndpointAddress);
> + uvc_trace(dev, UVC_TRACE_DESCR,
> + "Found a Status endpoint (addr %02x).\n",
> + desc->bEndpointAddress);
> dev->int_ep = ep;
> }
> }
> @@ -1689,8 +1695,9 @@ static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
> uvc_trace_cont(UVC_TRACE_PROBE, " <- XU %d", entity->id);
>
> if (entity->bNrInPins != 1) {
> - uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more "
> - "than 1 input pin.\n", entity->id);
> + uvc_trace(chain->dev, UVC_TRACE_DESCR,
> + "Extension unit %d has more than 1 input pin.\n",
> + entity->id);
> return -1;
> }
>
> @@ -1700,8 +1707,8 @@ static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
> uvc_trace_cont(UVC_TRACE_PROBE, " <- PU %d", entity->id);
>
> if (chain->processing != NULL) {
> - uvc_trace(UVC_TRACE_DESCR, "Found multiple "
> - "Processing Units in chain.\n");
> + uvc_trace(chain->dev, UVC_TRACE_DESCR,
> + "Found multiple Processing Units in chain.\n");
> return -1;
> }
>
> @@ -1716,8 +1723,8 @@ static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
> break;
>
> if (chain->selector != NULL) {
> - uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector "
> - "Units in chain.\n");
> + uvc_trace(chain->dev, UVC_TRACE_DESCR,
> + "Found multiple Selector Units in chain.\n");
> return -1;
> }
>
> @@ -1747,8 +1754,9 @@ static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
> break;
>
> default:
> - uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type "
> - "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity));
> + uvc_trace(chain->dev, UVC_TRACE_DESCR,
> + "Unsupported entity type 0x%04x found in chain.\n",
> + UVC_ENTITY_TYPE(entity));
> return -1;
> }
>
> @@ -1774,16 +1782,17 @@ static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
> if (forward == prev)
> continue;
> if (forward->chain.next || forward->chain.prev) {
> - uvc_trace(UVC_TRACE_DESCR, "Found reference to "
> - "entity %d already in chain.\n", forward->id);
> + uvc_trace(chain->dev, UVC_TRACE_DESCR,
> + "Found reference to entity %d already in chain.\n",
> + forward->id);
> return -EINVAL;
> }
>
> switch (UVC_ENTITY_TYPE(forward)) {
> case UVC_VC_EXTENSION_UNIT:
> if (forward->bNrInPins != 1) {
> - uvc_trace(UVC_TRACE_DESCR, "Extension unit %d "
> - "has more than 1 input pin.\n",
> + uvc_trace(chain->dev, UVC_TRACE_DESCR,
> + "Extension unit %d has more than 1 input pin.\n",
> entity->id);
> return -EINVAL;
> }
> @@ -1801,8 +1810,9 @@ static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
> case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
> case UVC_TT_STREAMING:
> if (UVC_ENTITY_IS_ITERM(forward)) {
> - uvc_trace(UVC_TRACE_DESCR, "Unsupported input "
> - "terminal %u.\n", forward->id);
> + uvc_trace(chain->dev, UVC_TRACE_DESCR,
> + "Unsupported input terminal %u.\n",
> + forward->id);
> return -EINVAL;
> }
>
> @@ -1848,16 +1858,16 @@ static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
> id = entity->baSourceID[i];
> term = uvc_entity_by_id(chain->dev, id);
> if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
> - uvc_trace(UVC_TRACE_DESCR, "Selector unit %d "
> - "input %d isn't connected to an "
> - "input terminal\n", entity->id, i);
> + uvc_trace(chain->dev, UVC_TRACE_DESCR,
> + "Selector unit %d input %d isn't connected to an input terminal\n",
> + entity->id, i);
> return -1;
> }
>
> if (term->chain.next || term->chain.prev) {
> - uvc_trace(UVC_TRACE_DESCR, "Found reference to "
> - "entity %d already in chain.\n",
> - term->id);
> + uvc_trace(chain->dev, UVC_TRACE_DESCR,
> + "Found reference to entity %d already in chain.\n",
> + term->id);
> return -EINVAL;
> }
>
> @@ -1890,8 +1900,8 @@ static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
>
> entity = uvc_entity_by_id(chain->dev, id);
> if (entity == NULL) {
> - uvc_trace(UVC_TRACE_DESCR, "Found reference to "
> - "unknown entity %d.\n", id);
> + uvc_trace(chain->dev, UVC_TRACE_DESCR,
> + "Found reference to unknown entity %d.\n", id);
> return -EINVAL;
> }
>
> @@ -1904,7 +1914,7 @@ static int uvc_scan_chain(struct uvc_video_chain *chain,
> {
> struct uvc_entity *entity, *prev;
>
> - uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:");
> + uvc_trace(chain->dev, UVC_TRACE_PROBE, "Scanning UVC chain:");
>
> entity = term;
> prev = NULL;
> @@ -1912,8 +1922,9 @@ static int uvc_scan_chain(struct uvc_video_chain *chain,
> while (entity != NULL) {
> /* Entity must not be part of an existing chain */
> if (entity->chain.next || entity->chain.prev) {
> - uvc_trace(UVC_TRACE_DESCR, "Found reference to "
> - "entity %d already in chain.\n", entity->id);
> + uvc_trace(chain->dev, UVC_TRACE_DESCR,
> + "Found reference to entity %d already in chain.\n",
> + entity->id);
> return -EINVAL;
> }
>
> @@ -2067,7 +2078,7 @@ static int uvc_scan_fallback(struct uvc_device *dev)
>
> list_add_tail(&chain->list, &dev->chains);
>
> - uvc_trace(UVC_TRACE_PROBE,
> + uvc_trace(dev, UVC_TRACE_PROBE,
> "Found a video chain by fallback heuristic (%s).\n",
> uvc_print_chain(chain));
>
> @@ -2112,7 +2123,8 @@ static int uvc_scan_device(struct uvc_device *dev)
> continue;
> }
>
> - uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n",
> + uvc_trace(dev, UVC_TRACE_PROBE,
> + "Found a valid video chain (%s).\n",
> uvc_print_chain(chain));
>
> list_add_tail(&chain->list, &dev->chains);
> @@ -2393,14 +2405,6 @@ static int uvc_probe(struct usb_interface *intf,
> int function;
> int ret;
>
> - if (id->idVendor && id->idProduct)
> - uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s "
> - "(%04x:%04x)\n", udev->devpath, id->idVendor,
> - id->idProduct);
> - else
> - uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n",
> - udev->devpath);
> -
> /* Allocate memory for the device and initialize it. */
> dev = kzalloc(sizeof(*dev), GFP_KERNEL);
> if (dev == NULL)
> @@ -2420,6 +2424,14 @@ static int uvc_probe(struct usb_interface *intf,
> dev->quirks = uvc_quirks_param == -1
> ? dev->info->quirks : uvc_quirks_param;
>
> + if (id->idVendor && id->idProduct)
> + uvc_trace(dev, UVC_TRACE_PROBE,
> + "Probing known UVC device %s (%04x:%04x)\n",
> + udev->devpath, id->idVendor, id->idProduct);
> + else
> + uvc_trace(dev, UVC_TRACE_PROBE,
> + "Probing generic UVC device %s\n", udev->devpath);
> +
> if (udev->product != NULL)
> strscpy(dev->name, udev->product, sizeof(dev->name));
> else
> @@ -2462,14 +2474,14 @@ static int uvc_probe(struct usb_interface *intf,
>
> /* Parse the Video Class control descriptor. */
> if (uvc_parse_control(dev) < 0) {
> - uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC "
> - "descriptors.\n");
> + uvc_trace(dev, UVC_TRACE_PROBE,
> + "Unable to parse UVC descriptors.\n");
> goto error;
> }
>
> /* Parse the associated GPIOs. */
> if (uvc_gpio_parse(dev) < 0) {
> - uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC GPIOs\n");
> + uvc_trace(dev, UVC_TRACE_PROBE, "Unable to parse UVC GPIOs\n");
> goto error;
> }
>
> @@ -2524,7 +2536,7 @@ static int uvc_probe(struct usb_interface *intf,
> "Unable to request uvc_privacy_gpio irq %d. Continuing wihtout privacy events\n",
> ret);
>
> - uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n");
> + uvc_trace(dev, UVC_TRACE_PROBE, "UVC device initialized.\n");
> usb_enable_autosuspend(udev);
> return 0;
>
> @@ -2556,7 +2568,7 @@ static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
> struct uvc_device *dev = usb_get_intfdata(intf);
> struct uvc_streaming *stream;
>
> - uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n",
> + uvc_trace(dev, UVC_TRACE_SUSPEND, "Suspending interface %u\n",
> intf->cur_altsetting->desc.bInterfaceNumber);
>
> /* Controls are cached on the fly so they don't need to be saved. */
> @@ -2574,8 +2586,8 @@ static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
> return uvc_video_suspend(stream);
> }
>
> - uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface "
> - "mismatch.\n");
> + uvc_trace(dev, UVC_TRACE_SUSPEND,
> + "Suspend: video streaming USB interface mismatch.\n");
> return -EINVAL;
> }
>
> @@ -2585,8 +2597,8 @@ static int __uvc_resume(struct usb_interface *intf, int reset)
> struct uvc_streaming *stream;
> int ret = 0;
>
> - uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n",
> - intf->cur_altsetting->desc.bInterfaceNumber);
> + uvc_trace(dev, UVC_TRACE_SUSPEND, "Resuming interface %u\n",
> + intf->cur_altsetting->desc.bInterfaceNumber);
>
> if (intf->cur_altsetting->desc.bInterfaceSubClass ==
> UVC_SC_VIDEOCONTROL) {
> @@ -2614,8 +2626,8 @@ static int __uvc_resume(struct usb_interface *intf, int reset)
> }
> }
>
> - uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface "
> - "mismatch.\n");
> + uvc_trace(dev, UVC_TRACE_SUSPEND,
> + "Resume: video streaming USB interface mismatch.\n");
> return -EINVAL;
> }
>
> diff --git a/drivers/media/usb/uvc/uvc_isight.c b/drivers/media/usb/uvc/uvc_isight.c
> index 135fd7fe6852..d06fa2ea9420 100644
> --- a/drivers/media/usb/uvc/uvc_isight.c
> +++ b/drivers/media/usb/uvc/uvc_isight.c
> @@ -43,21 +43,23 @@ static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
> unsigned int maxlen, nbytes;
> u8 *mem;
> int is_header = 0;
> + struct uvc_streaming *stream = uvc_queue_to_stream(queue);

The driver more or less orders variable declarations by line size, could
you please move this up ?

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

>
> if (buf == NULL)
> return 0;
>
> if ((len >= 14 && memcmp(&data[2], hdr, 12) == 0) ||
> (len >= 15 && memcmp(&data[3], hdr, 12) == 0)) {
> - uvc_trace(UVC_TRACE_FRAME, "iSight header found\n");
> + uvc_trace(stream->dev, UVC_TRACE_FRAME,
> + "iSight header found\n");
> is_header = 1;
> }
>
> /* Synchronize to the input stream by waiting for a header packet. */
> if (buf->state != UVC_BUF_STATE_ACTIVE) {
> if (!is_header) {
> - uvc_trace(UVC_TRACE_FRAME, "Dropping packet (out of "
> - "sync).\n");
> + uvc_trace(stream->dev, UVC_TRACE_FRAME,
> + "Dropping packet (out of sync).\n");
> return 0;
> }
>
> @@ -85,8 +87,8 @@ static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
> buf->bytesused += nbytes;
>
> if (len > maxlen || buf->bytesused == buf->length) {
> - uvc_trace(UVC_TRACE_FRAME, "Frame complete "
> - "(overflow).\n");
> + uvc_trace(stream->dev, UVC_TRACE_FRAME,
> + "Frame complete (overflow).\n");
> buf->state = UVC_BUF_STATE_DONE;
> }
> }
> @@ -103,8 +105,8 @@ void uvc_video_decode_isight(struct uvc_urb *uvc_urb, struct uvc_buffer *buf,
>
> for (i = 0; i < urb->number_of_packets; ++i) {
> if (urb->iso_frame_desc[i].status < 0) {
> - uvc_trace(UVC_TRACE_FRAME, "USB isochronous frame "
> - "lost (%d).\n",
> + uvc_trace(stream->dev, UVC_TRACE_FRAME,
> + "USB isochronous frame lost (%d).\n",
> urb->iso_frame_desc[i].status);
> }
>
> diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c
> index e800d491303f..66f2b2f19d65 100644
> --- a/drivers/media/usb/uvc/uvc_queue.c
> +++ b/drivers/media/usb/uvc/uvc_queue.c
> @@ -32,12 +32,6 @@
> * the driver.
> */
>
> -static inline struct uvc_streaming *
> -uvc_queue_to_stream(struct uvc_video_queue *queue)
> -{
> - return container_of(queue, struct uvc_streaming, queue);
> -}
> -
> static inline struct uvc_buffer *uvc_vbuf_to_buffer(struct vb2_v4l2_buffer *buf)
> {
> return container_of(buf, struct uvc_buffer, buf);
> @@ -109,7 +103,8 @@ static int uvc_buffer_prepare(struct vb2_buffer *vb)
>
> if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
> vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) {
> - uvc_trace(UVC_TRACE_CAPTURE, "[E] Bytes used out of bounds.\n");
> + uvc_trace(uvc_queue_to_stream(queue)->dev, UVC_TRACE_CAPTURE,
> + "[E] Bytes used out of bounds.\n");
> return -EINVAL;
> }
>
> diff --git a/drivers/media/usb/uvc/uvc_status.c b/drivers/media/usb/uvc/uvc_status.c
> index 36fa196a9258..b5f493216fcd 100644
> --- a/drivers/media/usb/uvc/uvc_status.c
> +++ b/drivers/media/usb/uvc/uvc_status.c
> @@ -93,20 +93,20 @@ static void uvc_event_streaming(struct uvc_device *dev,
> struct uvc_streaming_status *status, int len)
> {
> if (len < 3) {
> - uvc_trace(UVC_TRACE_STATUS, "Invalid streaming status event "
> - "received.\n");
> + uvc_trace(dev, UVC_TRACE_STATUS,
> + "Invalid streaming status event received.\n");
> return;
> }
>
> if (status->bEvent == 0) {
> if (len < 4)
> return;
> - uvc_trace(UVC_TRACE_STATUS, "Button (intf %u) %s len %d\n",
> + uvc_trace(dev, UVC_TRACE_STATUS, "Button (intf %u) %s len %d\n",
> status->bOriginator,
> status->bValue[0] ? "pressed" : "released", len);
> uvc_input_report_key(dev, KEY_CAMERA, status->bValue[0]);
> } else {
> - uvc_trace(UVC_TRACE_STATUS,
> + uvc_trace(dev, UVC_TRACE_STATUS,
> "Stream %u error event %02x len %d.\n",
> status->bOriginator, status->bEvent, len);
> }
> @@ -163,12 +163,12 @@ static bool uvc_event_control(struct urb *urb,
>
> if (len < 6 || status->bEvent != 0 ||
> status->bAttribute >= ARRAY_SIZE(attrs)) {
> - uvc_trace(UVC_TRACE_STATUS, "Invalid control status event "
> - "received.\n");
> + uvc_trace(dev, UVC_TRACE_STATUS,
> + "Invalid control status event received.\n");
> return false;
> }
>
> - uvc_trace(UVC_TRACE_STATUS, "Control %u/%u %s change len %d.\n",
> + uvc_trace(dev, UVC_TRACE_STATUS, "Control %u/%u %s change len %d.\n",
> status->bOriginator, status->bSelector,
> attrs[status->bAttribute], len);
>
> @@ -236,8 +236,9 @@ static void uvc_status_complete(struct urb *urb)
> }
>
> default:
> - uvc_trace(UVC_TRACE_STATUS, "Unknown status event "
> - "type %u.\n", dev->status[0]);
> + uvc_trace(dev, UVC_TRACE_STATUS,
> + "Unknown status event type %u.\n",
> + dev->status[0]);
> break;
> }
> }
> diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
> index fa06bfa174ad..3a2d17bc766b 100644
> --- a/drivers/media/usb/uvc/uvc_v4l2.c
> +++ b/drivers/media/usb/uvc/uvc_v4l2.c
> @@ -75,8 +75,9 @@ static int uvc_ioctl_ctrl_map(struct uvc_video_chain *chain,
> break;
>
> default:
> - uvc_trace(UVC_TRACE_CONTROL, "Unsupported V4L2 control type "
> - "%u.\n", xmap->v4l2_type);
> + uvc_trace(chain->dev, UVC_TRACE_CONTROL,
> + "Unsupported V4L2 control type %u.\n",
> + xmap->v4l2_type);
> ret = -ENOTTY;
> goto free_map;
> }
> @@ -164,10 +165,11 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
> return -EINVAL;
>
> fcc = (u8 *)&fmt->fmt.pix.pixelformat;
> - uvc_trace(UVC_TRACE_FORMAT, "Trying format 0x%08x (%c%c%c%c): %ux%u.\n",
> - fmt->fmt.pix.pixelformat,
> - fcc[0], fcc[1], fcc[2], fcc[3],
> - fmt->fmt.pix.width, fmt->fmt.pix.height);
> + uvc_trace(stream->dev, UVC_TRACE_FORMAT,
> + "Trying format 0x%08x (%c%c%c%c): %ux%u.\n",
> + fmt->fmt.pix.pixelformat,
> + fcc[0], fcc[1], fcc[2], fcc[3],
> + fmt->fmt.pix.width, fmt->fmt.pix.height);
>
> /* Check if the hardware supports the requested format, use the default
> * format otherwise.
> @@ -207,16 +209,18 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
> }
>
> if (frame == NULL) {
> - uvc_trace(UVC_TRACE_FORMAT, "Unsupported size %ux%u.\n",
> - fmt->fmt.pix.width, fmt->fmt.pix.height);
> + uvc_trace(stream->dev, UVC_TRACE_FORMAT,
> + "Unsupported size %ux%u.\n", fmt->fmt.pix.width,
> + fmt->fmt.pix.height);
> return -EINVAL;
> }
>
> /* Use the default frame interval. */
> interval = frame->dwDefaultFrameInterval;
> - uvc_trace(UVC_TRACE_FORMAT, "Using default frame interval %u.%u us "
> - "(%u.%u fps).\n", interval/10, interval%10, 10000000/interval,
> - (100000000/interval)%10);
> + uvc_trace(stream->dev, UVC_TRACE_FORMAT,
> + "Using default frame interval %u.%u us (%u.%u fps).\n",
> + interval / 10, interval % 10, 10000000 / interval,
> + (100000000 / interval) % 10);
>
> /* Set the format index, frame index and frame interval. */
> memset(probe, 0, sizeof(*probe));
> @@ -258,7 +262,8 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
> }
>
> if (i == stream->nformats) {
> - uvc_trace(UVC_TRACE_FORMAT, "Unknown bFormatIndex %u\n",
> + uvc_trace(stream->dev, UVC_TRACE_FORMAT,
> + "Unknown bFormatIndex %u\n",
> probe->bFormatIndex);
> return -EINVAL;
> }
> @@ -271,7 +276,8 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
> }
>
> if (i == format->nframes) {
> - uvc_trace(UVC_TRACE_FORMAT, "Unknown bFrameIndex %u\n",
> + uvc_trace(stream->dev, UVC_TRACE_FORMAT,
> + "Unknown bFrameIndex %u\n",
> probe->bFrameIndex);
> return -EINVAL;
> }
> @@ -416,8 +422,9 @@ static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream,
>
> interval = uvc_fraction_to_interval(timeperframe.numerator,
> timeperframe.denominator);
> - uvc_trace(UVC_TRACE_FORMAT, "Setting frame interval to %u/%u (%u).\n",
> - timeperframe.numerator, timeperframe.denominator, interval);
> + uvc_trace(stream->dev, UVC_TRACE_FORMAT,
> + "Setting frame interval to %u/%u (%u).\n",
> + timeperframe.numerator, timeperframe.denominator, interval);
>
> mutex_lock(&stream->mutex);
>
> @@ -545,8 +552,8 @@ static int uvc_v4l2_open(struct file *file)
> struct uvc_fh *handle;
> int ret = 0;
>
> - uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_open\n");
> stream = video_drvdata(file);
> + uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
>
> ret = usb_autopm_get_interface(stream->dev->intf);
> if (ret < 0)
> @@ -588,7 +595,7 @@ static int uvc_v4l2_release(struct file *file)
> struct uvc_fh *handle = file->private_data;
> struct uvc_streaming *stream = handle->stream;
>
> - uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_release\n");
> + uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
>
> /* Only free resources if this is a privileged handle. */
> if (uvc_has_privileges(handle))
> @@ -1461,7 +1468,11 @@ static long uvc_v4l2_compat_ioctl32(struct file *file,
> static ssize_t uvc_v4l2_read(struct file *file, char __user *data,
> size_t count, loff_t *ppos)
> {
> - uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_read: not implemented.\n");
> + struct uvc_fh *handle = file->private_data;
> + struct uvc_streaming *stream = handle->stream;
> +
> + uvc_trace(stream->dev, UVC_TRACE_CALLS,
> + "uvc_v4l2_read: not implemented.\n");
> return -EINVAL;
> }
>
> @@ -1470,7 +1481,7 @@ static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
> struct uvc_fh *handle = file->private_data;
> struct uvc_streaming *stream = handle->stream;
>
> - uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_mmap\n");
> + uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
>
> return uvc_queue_mmap(&stream->queue, vma);
> }
> @@ -1480,7 +1491,7 @@ static __poll_t uvc_v4l2_poll(struct file *file, poll_table *wait)
> struct uvc_fh *handle = file->private_data;
> struct uvc_streaming *stream = handle->stream;
>
> - uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_poll\n");
> + uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
>
> return uvc_queue_poll(&stream->queue, file, wait);
> }
> @@ -1493,7 +1504,7 @@ static unsigned long uvc_v4l2_get_unmapped_area(struct file *file,
> struct uvc_fh *handle = file->private_data;
> struct uvc_streaming *stream = handle->stream;
>
> - uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_get_unmapped_area\n");
> + uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
>
> return uvc_queue_get_unmapped_area(&stream->queue, pgoff);
> }
> diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
> index 71e643e6d006..26251ed0c3fd 100644
> --- a/drivers/media/usb/uvc/uvc_video.c
> +++ b/drivers/media/usb/uvc/uvc_video.c
> @@ -95,7 +95,7 @@ int uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 unit,
> if (ret != 1)
> return ret < 0 ? ret : -EPIPE;
>
> - uvc_trace(UVC_TRACE_CONTROL, "Control error %u\n", error);
> + uvc_trace(dev, UVC_TRACE_CONTROL, "Control error %u\n", error);
>
> switch (error) {
> case 0:
> @@ -705,8 +705,8 @@ void uvc_video_clock_update(struct uvc_streaming *stream,
>
> sof = y;
>
> - uvc_trace(UVC_TRACE_CLOCK, "%s: PTS %u y %llu.%06llu SOF %u.%06llu "
> - "(x1 %u x2 %u y1 %u y2 %u SOF offset %u)\n",
> + uvc_trace(stream->dev, UVC_TRACE_CLOCK,
> + "%s: PTS %u y %llu.%06llu SOF %u.%06llu (x1 %u x2 %u y1 %u y2 %u SOF offset %u)\n",
> stream->dev->name, buf->pts,
> y >> 16, div_u64((y & 0xffff) * 1000000, 65536),
> sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),
> @@ -740,8 +740,8 @@ void uvc_video_clock_update(struct uvc_streaming *stream,
>
> timestamp = ktime_to_ns(first->host_time) + y - y1;
>
> - uvc_trace(UVC_TRACE_CLOCK, "%s: SOF %u.%06llu y %llu ts %llu "
> - "buf ts %llu (x1 %u/%u/%u x2 %u/%u/%u y1 %u y2 %u)\n",
> + uvc_trace(stream->dev, UVC_TRACE_CLOCK,
> + "%s: SOF %u.%06llu y %llu ts %llu buf ts %llu (x1 %u/%u/%u x2 %u/%u/%u y1 %u y2 %u)\n",
> stream->dev->name,
> sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),
> y, timestamp, vbuf->vb2_buf.timestamp,
> @@ -875,9 +875,8 @@ static void uvc_video_stats_update(struct uvc_streaming *stream)
> {
> struct uvc_stats_frame *frame = &stream->stats.frame;
>
> - uvc_trace(UVC_TRACE_STATS, "frame %u stats: %u/%u/%u packets, "
> - "%u/%u/%u pts (%searly %sinitial), %u/%u scr, "
> - "last pts/stc/sof %u/%u/%u\n",
> + uvc_trace(stream->dev, UVC_TRACE_STATS,
> + "frame %u stats: %u/%u/%u packets, %u/%u/%u pts (%searly %sinitial), %u/%u scr, last pts/stc/sof %u/%u/%u\n",
> stream->sequence, frame->first_data,
> frame->nb_packets - frame->nb_empty, frame->nb_packets,
> frame->nb_pts_diffs, frame->last_pts_diff, frame->nb_pts,
> @@ -1039,8 +1038,8 @@ static int uvc_video_decode_start(struct uvc_streaming *stream,
>
> /* Mark the buffer as bad if the error bit is set. */
> if (data[1] & UVC_STREAM_ERR) {
> - uvc_trace(UVC_TRACE_FRAME, "Marking buffer as bad (error bit "
> - "set).\n");
> + uvc_trace(stream->dev, UVC_TRACE_FRAME,
> + "Marking buffer as bad (error bit set).\n");
> buf->error = 1;
> }
>
> @@ -1054,8 +1053,8 @@ static int uvc_video_decode_start(struct uvc_streaming *stream,
> */
> if (buf->state != UVC_BUF_STATE_ACTIVE) {
> if (fid == stream->last_fid) {
> - uvc_trace(UVC_TRACE_FRAME, "Dropping payload (out of "
> - "sync).\n");
> + uvc_trace(stream->dev, UVC_TRACE_FRAME,
> + "Dropping payload (out of sync).\n");
> if ((stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID) &&
> (data[1] & UVC_STREAM_EOF))
> stream->last_fid ^= UVC_STREAM_FID;
> @@ -1086,8 +1085,8 @@ static int uvc_video_decode_start(struct uvc_streaming *stream,
> * previous payload had the EOF bit set.
> */
> if (fid != stream->last_fid && buf->bytesused != 0) {
> - uvc_trace(UVC_TRACE_FRAME, "Frame complete (FID bit "
> - "toggled).\n");
> + uvc_trace(stream->dev, UVC_TRACE_FRAME,
> + "Frame complete (FID bit toggled).\n");
> buf->state = UVC_BUF_STATE_READY;
> return -EAGAIN;
> }
> @@ -1148,7 +1147,8 @@ static void uvc_video_decode_data(struct uvc_urb *uvc_urb,
>
> /* Complete the current frame if the buffer size was exceeded. */
> if (len > maxlen) {
> - uvc_trace(UVC_TRACE_FRAME, "Frame complete (overflow).\n");
> + uvc_trace(uvc_urb->stream->dev, UVC_TRACE_FRAME,
> + "Frame complete (overflow).\n");
> buf->error = 1;
> buf->state = UVC_BUF_STATE_READY;
> }
> @@ -1161,9 +1161,11 @@ static void uvc_video_decode_end(struct uvc_streaming *stream,
> {
> /* Mark the buffer as done if the EOF marker is set. */
> if (data[1] & UVC_STREAM_EOF && buf->bytesused != 0) {
> - uvc_trace(UVC_TRACE_FRAME, "Frame complete (EOF found).\n");
> + uvc_trace(stream->dev, UVC_TRACE_FRAME,
> + "Frame complete (EOF found).\n");
> if (data[0] == len)
> - uvc_trace(UVC_TRACE_FRAME, "EOF in empty payload.\n");
> + uvc_trace(stream->dev, UVC_TRACE_FRAME,
> + "EOF in empty payload.\n");
> buf->state = UVC_BUF_STATE_READY;
> if (stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID)
> stream->last_fid ^= UVC_STREAM_FID;
> @@ -1279,7 +1281,7 @@ static void uvc_video_decode_meta(struct uvc_streaming *stream,
> memcpy(&meta->length, mem, length);
> meta_buf->bytesused += length + sizeof(meta->ns) + sizeof(meta->sof);
>
> - uvc_trace(UVC_TRACE_FRAME,
> + uvc_trace(stream->dev, UVC_TRACE_FRAME,
> "%s(): t-sys %lluns, SOF %u, len %u, flags 0x%x, PTS %u, STC %u frame SOF %u\n",
> __func__, ktime_to_ns(time), meta->sof, meta->length,
> meta->flags,
> @@ -1339,8 +1341,9 @@ static void uvc_video_decode_isoc(struct uvc_urb *uvc_urb,
>
> for (i = 0; i < urb->number_of_packets; ++i) {
> if (urb->iso_frame_desc[i].status < 0) {
> - uvc_trace(UVC_TRACE_FRAME, "USB isochronous frame "
> - "lost (%d).\n", urb->iso_frame_desc[i].status);
> + uvc_trace(stream->dev, UVC_TRACE_FRAME,
> + "USB isochronous frame lost (%d).\n",
> + urb->iso_frame_desc[i].status);
> /* Mark the buffer as faulty. */
> if (buf != NULL)
> buf->error = 1;
> @@ -1628,15 +1631,16 @@ static int uvc_alloc_urb_buffers(struct uvc_streaming *stream,
> }
>
> if (i == UVC_URBS) {
> - uvc_trace(UVC_TRACE_VIDEO, "Allocated %u URB buffers "
> - "of %ux%u bytes each.\n", UVC_URBS, npackets,
> - psize);
> + uvc_trace(stream->dev, UVC_TRACE_VIDEO,
> + "Allocated %u URB buffers of %ux%u bytes each.\n",
> + UVC_URBS, npackets, psize);
> return npackets;
> }
> }
>
> - uvc_trace(UVC_TRACE_VIDEO, "Failed to allocate URB buffers (%u bytes "
> - "per packet).\n", psize);
> + uvc_trace(stream->dev, UVC_TRACE_VIDEO,
> + "Failed to allocate URB buffers (%u bytes per packet).\n",
> + psize);
> return 0;
> }
>
> @@ -1835,12 +1839,13 @@ static int uvc_video_start_transfer(struct uvc_streaming *stream,
> bandwidth = stream->ctrl.dwMaxPayloadTransferSize;
>
> if (bandwidth == 0) {
> - uvc_trace(UVC_TRACE_VIDEO, "Device requested null "
> - "bandwidth, defaulting to lowest.\n");
> + uvc_trace(stream->dev, UVC_TRACE_VIDEO,
> + "Device requested null bandwidth, defaulting to lowest.\n");
> bandwidth = 1;
> } else {
> - uvc_trace(UVC_TRACE_VIDEO, "Device requested %u "
> - "B/frame bandwidth.\n", bandwidth);
> + uvc_trace(stream->dev, UVC_TRACE_VIDEO,
> + "Device requested %u B/frame bandwidth.\n",
> + bandwidth);
> }
>
> for (i = 0; i < intf->num_altsetting; ++i) {
> @@ -1863,13 +1868,14 @@ static int uvc_video_start_transfer(struct uvc_streaming *stream,
> }
>
> if (best_ep == NULL) {
> - uvc_trace(UVC_TRACE_VIDEO, "No fast enough alt setting "
> - "for requested bandwidth.\n");
> + uvc_trace(stream->dev, UVC_TRACE_VIDEO,
> + "No fast enough alt setting for requested bandwidth.\n");
> return -EIO;
> }
>
> - uvc_trace(UVC_TRACE_VIDEO, "Selecting alternate setting %u "
> - "(%u B/frame bandwidth).\n", altsetting, best_psize);
> + uvc_trace(stream->dev, UVC_TRACE_VIDEO,
> + "Selecting alternate setting %u (%u B/frame bandwidth).\n",
> + altsetting, best_psize);
>
> ret = usb_set_interface(stream->dev->udev, intfnum, altsetting);
> if (ret < 0)
> diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
> index 4a7d1fb76eee..60626feeee27 100644
> --- a/drivers/media/usb/uvc/uvcvideo.h
> +++ b/drivers/media/usb/uvc/uvcvideo.h
> @@ -757,10 +757,11 @@ extern unsigned int uvc_trace_param;
> extern unsigned int uvc_timeout_param;
> extern unsigned int uvc_hw_timestamps_param;
>
> -#define uvc_trace(flag, fmt, ...) \
> +#define uvc_trace(_dev, flag, fmt, ...) \
> do { \
> if (uvc_trace_param & flag) \
> - printk(KERN_DEBUG "uvcvideo: " fmt, ##__VA_ARGS__); \
> + dev_printk(KERN_DEBUG, &(_dev)->udev->dev, fmt, \
> + ##__VA_ARGS__); \
> } while (0)
>
> #define uvc_trace_cont(flag, fmt, ...) \
> @@ -822,6 +823,12 @@ static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
> return vb2_is_streaming(&queue->queue);
> }
>
> +static inline struct uvc_streaming *
> +uvc_queue_to_stream(struct uvc_video_queue *queue)
> +{
> + return container_of(queue, struct uvc_streaming, queue);
> +}
> +
> /* V4L2 interface */
> extern const struct v4l2_ioctl_ops uvc_ioctl_ops;
> extern const struct v4l2_file_operations uvc_fops;

--
Regards,

Laurent Pinchart