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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-09-08 01:01:14 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-09-08 01:01:14 -0300 |
| commit | e5fd91f1ef340da553f7a79da9540c3db711c937 (patch) | |
| tree | b11842027dc6641da63f4bcc524f8678263304a3 /drivers/media/usb/uvc/uvc_video.c | |
| parent | 2a9b0348e685a63d97486f6749622b61e9e3292f (diff) | |
Linux-libre 4.2-gnu
Diffstat (limited to 'drivers/media/usb/uvc/uvc_video.c')
| -rw-r--r-- | drivers/media/usb/uvc/uvc_video.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c index 20ccc9d31..f839654ea 100644 --- a/drivers/media/usb/uvc/uvc_video.c +++ b/drivers/media/usb/uvc/uvc_video.c @@ -119,6 +119,14 @@ static void uvc_fixup_video_ctrl(struct uvc_streaming *stream, ctrl->dwMaxVideoFrameSize = frame->dwMaxVideoFrameBufferSize; + /* The "TOSHIBA Web Camera - 5M" Chicony device (04f2:b50b) seems to + * compute the bandwidth on 16 bits and erroneously sign-extend it to + * 32 bits, resulting in a huge bandwidth value. Detect and fix that + * condition by setting the 16 MSBs to 0 when they're all equal to 1. + */ + if ((ctrl->dwMaxPayloadTransferSize & 0xffff0000) == 0xffff0000) + ctrl->dwMaxPayloadTransferSize &= ~0xffff0000; + if (!(format->flags & UVC_FMT_FLAG_COMPRESSED) && stream->dev->quirks & UVC_QUIRK_FIX_BANDWIDTH && stream->intf->num_altsetting > 1) { |