kernel: regenerate uvc debug patch

This commit is contained in:
Brad Stein 2026-01-23 16:44:45 -03:00
parent fca161865b
commit df2ff4cc5c

View File

@ -1,15 +1,9 @@
--- a/drivers/usb/gadget/function/uvc_video.c
+++ b/drivers/usb/gadget/function/uvc_video.c
@@ -528,7 +528,20 @@
if (req_size > max_req_size) {
/* The prepared interval length and expected buffer size
* is not possible to stream with the currently configured
* isoc bandwidth. Fallback to the maximum.
*/
req_size = max_req_size;
@@ -534,6 +534,16 @@
}
video->req_size = req_size;
+
+ if (!req_size || !video->max_payload_size || !video->imagesize || !nreq) {
+ uvcg_info(&uvc->func,
+ "Video prep requests: imagesize=%u interval=%u interval_dur=%u nreq=%u header=%u req_size=%u max_req=%u max_payload=%u ep_maxpacket=%u maxburst=%u mult=%u bInterval=%u speed=%u\n",
@ -19,9 +13,11 @@
+ video->ep->maxburst, video->ep->mult,
+ video->ep->desc->bInterval, cdev->gadget->speed);
+ }
+
/* We need to compensate the amount of requests to be
@@ -763,17 +763,60 @@
* allocated with the maximum amount of zero length requests.
* Since it is possible that hw_submit will initially
@@ -764,20 +774,63 @@
{
int ret;
@ -56,6 +52,12 @@
+ return -EINVAL;
+ }
+
/*
* Safe to access request related fields without req_lock because
* this is the only thread currently active, and no other
* request handling thread will become active until this function
* returns.
*/
+ uvcg_info(&video->uvc->func,
+ "Video enable start: video=%p ep=%p kworker=%p async_wq=%p req_size=%u max_payload=%u requests=%u reqs_per_frame=%u use_sg=%u flags=0x%x\n",
+ video, video->ep, video->kworker, video->async_wq,
@ -78,6 +80,4 @@
+
if ((ret = uvcg_queue_enable(&video->queue, 1)) < 0)
return ret;
/*
* Safe to access request related fields without req_lock because
* this is the only thread currently active, and no other