From: Laurent Pinchart Date: Tue, 16 Sep 2014 14:26:47 +0000 (+0300) Subject: usb: gadget: uvc: Fix endianness mismatches X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e102609f107269fbc04af21548e78e99c02b6204;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git usb: gadget: uvc: Fix endianness mismatches The struct usb_endpoint_descriptor wMaxPacketSize field the struct usb_ss_ep_comp_descriptor wBytesPerInterval field are stored in little-endian format. Convert the values from CPU order to little endian before storing the values. Signed-off-by: Laurent Pinchart Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c index bf9abf4aff22..e126439e4b65 100644 --- a/drivers/usb/gadget/function/f_uvc.c +++ b/drivers/usb/gadget/function/f_uvc.c @@ -596,19 +596,20 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) } uvc_fs_streaming_ep.wMaxPacketSize = - min(opts->streaming_maxpacket, 1023U); + cpu_to_le16(min(opts->streaming_maxpacket, 1023U)); uvc_fs_streaming_ep.bInterval = opts->streaming_interval; - uvc_hs_streaming_ep.wMaxPacketSize = max_packet_size; - uvc_hs_streaming_ep.wMaxPacketSize |= ((max_packet_mult - 1) << 11); + uvc_hs_streaming_ep.wMaxPacketSize = + cpu_to_le16(max_packet_size | ((max_packet_mult - 1) << 11)); uvc_hs_streaming_ep.bInterval = opts->streaming_interval; - uvc_ss_streaming_ep.wMaxPacketSize = max_packet_size; + uvc_ss_streaming_ep.wMaxPacketSize = cpu_to_le16(max_packet_size); uvc_ss_streaming_ep.bInterval = opts->streaming_interval; uvc_ss_streaming_comp.bmAttributes = max_packet_mult - 1; uvc_ss_streaming_comp.bMaxBurst = opts->streaming_maxburst; uvc_ss_streaming_comp.wBytesPerInterval = - max_packet_size * max_packet_mult * opts->streaming_maxburst; + cpu_to_le16(max_packet_size * max_packet_mult * + opts->streaming_maxburst); /* Allocate endpoints. */ ep = usb_ep_autoconfig(cdev->gadget, &uvc_control_ep);