From: Ricardo Ribalda Date: Fri, 1 Apr 2022 17:24:37 +0000 (+0200) Subject: media: uvcvideo: Undup use uvc_endpoint_max_bpi() code X-Git-Tag: v5.19-rc1~179^2~177 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5b9c75c794ce041e6e00789efef75d71915c4f4c;p=thirdparty%2Fkernel%2Flinux.git media: uvcvideo: Undup use uvc_endpoint_max_bpi() code Replace manual decoding of psize in uvc_parse_streaming(), with the code from uvc_endpoint_max_bpi(). It also handles usb3 devices. Signed-off-by: Ricardo Ribalda Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index e0a33a0a00c62..c780394059e72 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -1009,9 +1009,7 @@ static int uvc_parse_streaming(struct uvc_device *dev, streaming->header.bEndpointAddress); if (ep == NULL) continue; - - psize = le16_to_cpu(ep->desc.wMaxPacketSize); - psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); + psize = uvc_endpoint_max_bpi(dev->udev, ep); if (psize > streaming->maxpsize) streaming->maxpsize = psize; } diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c index 6712982abafb2..6d3dfa4e0bb26 100644 --- a/drivers/media/usb/uvc/uvc_video.c +++ b/drivers/media/usb/uvc/uvc_video.c @@ -1754,8 +1754,7 @@ static void uvc_video_stop_transfer(struct uvc_streaming *stream, /* * Compute the maximum number of bytes per interval for an endpoint. */ -static unsigned int uvc_endpoint_max_bpi(struct usb_device *dev, - struct usb_host_endpoint *ep) +u16 uvc_endpoint_max_bpi(struct usb_device *dev, struct usb_host_endpoint *ep) { u16 psize; diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index 143230b3275b3..28eb337a6cfbf 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -911,6 +911,7 @@ void uvc_simplify_fraction(u32 *numerator, u32 *denominator, u32 uvc_fraction_to_interval(u32 numerator, u32 denominator); struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, u8 epaddr); +u16 uvc_endpoint_max_bpi(struct usb_device *dev, struct usb_host_endpoint *ep); /* Quirks support */ void uvc_video_decode_isight(struct uvc_urb *uvc_urb,