diff options
Diffstat (limited to 'linux/drivers/media/video/uvc/uvc_driver.c')
| -rw-r--r-- | linux/drivers/media/video/uvc/uvc_driver.c | 43 |
1 files changed, 12 insertions, 31 deletions
diff --git a/linux/drivers/media/video/uvc/uvc_driver.c b/linux/drivers/media/video/uvc/uvc_driver.c index 4a69a3af6..8d193376c 100644 --- a/linux/drivers/media/video/uvc/uvc_driver.c +++ b/linux/drivers/media/video/uvc/uvc_driver.c @@ -289,10 +289,8 @@ static int uvc_parse_format(struct uvc_device *dev, struct uvc_format_desc *fmtdesc; struct uvc_frame *frame; const unsigned char *start = buffer; - unsigned char *_buffer; unsigned int interval; unsigned int i, n; - int _buflen; __u8 ftype; format->type = buffer[2]; @@ -303,7 +301,7 @@ static int uvc_parse_format(struct uvc_device *dev, case VS_FORMAT_FRAME_BASED: n = buffer[2] == VS_FORMAT_UNCOMPRESSED ? 27 : 28; if (buflen < n) { - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming" + uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " "interface %d FORMAT error\n", dev->udev->devnum, alts->desc.bInterfaceNumber); @@ -338,7 +336,7 @@ static int uvc_parse_format(struct uvc_device *dev, case VS_FORMAT_MJPEG: if (buflen < 11) { - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming" + uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " "interface %d FORMAT error\n", dev->udev->devnum, alts->desc.bInterfaceNumber); @@ -354,7 +352,7 @@ static int uvc_parse_format(struct uvc_device *dev, case VS_FORMAT_DV: if (buflen < 9) { - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming" + uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " "interface %d FORMAT error\n", dev->udev->devnum, alts->desc.bInterfaceNumber); @@ -372,7 +370,7 @@ static int uvc_parse_format(struct uvc_device *dev, strlcpy(format->name, "HD-DV", sizeof format->name); break; default: - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming" + uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " "interface %d: unknown DV format %u\n", dev->udev->devnum, alts->desc.bInterfaceNumber, buffer[8]); @@ -401,7 +399,7 @@ static int uvc_parse_format(struct uvc_device *dev, case VS_FORMAT_STREAM_BASED: /* Not supported yet. */ default: - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming" + uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " "interface %d unsupported format %u\n", dev->udev->devnum, alts->desc.bInterfaceNumber, buffer[2]); @@ -413,20 +411,11 @@ static int uvc_parse_format(struct uvc_device *dev, buflen -= buffer[0]; buffer += buffer[0]; - /* Count the number of frame descriptors to test the bFrameIndex - * field when parsing the descriptors. We can't rely on the - * bNumFrameDescriptors field as some cameras don't initialize it - * properly. - */ - for (_buflen = buflen, _buffer = buffer; - _buflen > 2 && _buffer[2] == ftype; - _buflen -= _buffer[0], _buffer += _buffer[0]) - format->nframes++; - /* Parse the frame descriptors. Only uncompressed, MJPEG and frame * based formats have frame descriptors. */ while (buflen > 2 && buffer[2] == ftype) { + frame = &format->frame[format->nframes]; if (ftype != VS_FRAME_FRAME_BASED) n = buflen > 25 ? buffer[25] : 0; else @@ -435,22 +424,12 @@ 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" + uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " "interface %d FRAME error\n", dev->udev->devnum, alts->desc.bInterfaceNumber); return -EINVAL; } - if (buffer[3] - 1 >= format->nframes) { - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming" - "interface %d frame index %u out of range\n", - dev->udev->devnum, alts->desc.bInterfaceNumber, - buffer[3]); - return -EINVAL; - } - - frame = &format->frame[buffer[3] - 1]; - frame->bFrameIndex = buffer[3]; frame->bmCapabilities = buffer[4]; frame->wWidth = get_unaligned_le16(&buffer[5]); @@ -507,6 +486,7 @@ static int uvc_parse_format(struct uvc_device *dev, 10000000/frame->dwDefaultFrameInterval, (100000000/frame->dwDefaultFrameInterval)%10); + format->nframes++; buflen -= buffer[0]; buffer += buffer[0]; } @@ -518,7 +498,7 @@ static int uvc_parse_format(struct uvc_device *dev, if (buflen > 2 && buffer[2] == VS_COLORFORMAT) { if (buflen < 6) { - uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming" + uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " "interface %d COLORFORMAT error\n", dev->udev->devnum, alts->desc.bInterfaceNumber); @@ -1316,7 +1296,7 @@ static int uvc_scan_chain_forward(struct uvc_video_device *video, continue; if (forward->extension.bNrInPins != 1) { - uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has" + uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has " "more than 1 input pin.\n", entity->id); return -1; } @@ -1614,6 +1594,7 @@ static int uvc_probe(struct usb_interface *intf, INIT_LIST_HEAD(&dev->entities); INIT_LIST_HEAD(&dev->streaming); kref_init(&dev->kref); + atomic_set(&dev->users, 0); dev->udev = usb_get_dev(udev); dev->intf = usb_get_intf(intf); @@ -1929,7 +1910,7 @@ static struct usb_device_id uvc_ids[] = { .bInterfaceSubClass = 1, .bInterfaceProtocol = 0, .driver_info = UVC_QUIRK_STREAM_NO_FID }, - /* Lenovo Thinkpad SL500 */ + /* Lenovo Thinkpad SL400/SL500 */ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_INT_INFO, .idVendor = 0x17ef, |