From eb40374389d251c695a05072ece6332b02d6097f Mon Sep 17 00:00:00 2001
From: Brad Stein <Brad.Stein@gmail.com>
Date: Mon, 26 Jan 2026 00:51:11 -0300
Subject: [PATCH] kernel: add uvc prep/queue logs

---
 scripts/kernel/uvc-debug.patch | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/scripts/kernel/uvc-debug.patch b/scripts/kernel/uvc-debug.patch
index 99ca8d1..bf5ffb5 100644
--- a/scripts/kernel/uvc-debug.patch
+++ b/scripts/kernel/uvc-debug.patch
@@ -1,6 +1,17 @@
 --- a/drivers/usb/gadget/function/uvc_video.c
 +++ b/drivers/usb/gadget/function/uvc_video.c
-@@ -534,6 +534,16 @@
+@@ -503,6 +503,10 @@
+ 	unsigned int max_req_size, req_size, header_size;
+ 	unsigned int nreq;
+ 
++	pr_info_once("uvc: Video prep enter: video=%p ep=%p max_req=%u max_payload=%u imagesize=%u interval=%u\n",
++		video, video->ep, video->max_req_size, video->max_payload_size,
++		video->imagesize, video->interval);
++
+ 	max_req_size = video->max_req_size;
+ 
+ 	if (!usb_endpoint_xfer_isoc(video->ep->desc)) {
+@@ -534,6 +538,16 @@
  	}
  	video->req_size = req_size;
  
@@ -17,7 +28,7 @@
  	/* We need to compensate the amount of requests to be
  	 * allocated with the maximum amount of zero length requests.
  	 * Since it is possible that hw_submit will initially
-@@ -764,20 +774,63 @@
+@@ -764,20 +778,70 @@
  {
  	int ret;
  
@@ -29,7 +40,7 @@
 +	if (!video->uvc || !video->uvc->func.config ||
 +	    !video->uvc->func.config->cdev) {
 +		pr_err("uvcg_video_enable: missing uvc/func/config video=%p uvc=%p\n",
-+	       video, video->uvc);
++		       video, video->uvc);
 +		return -ENODEV;
 +	}
 +
@@ -77,6 +88,13 @@
 +			video->queue.queue.type, video->queue.queue.io_modes);
 +		return -EINVAL;
 +	}
++
++	uvcg_info(&video->uvc->func,
++		"Video queue enable: dev=%p lock=%p ops=%p mem_ops=%p buf_ops=%p drv_priv=%p type=%u io_modes=0x%x\n",
++		video->queue.queue.dev, video->queue.queue.lock,
++		video->queue.queue.ops, video->queue.queue.mem_ops,
++		video->queue.queue.buf_ops, video->queue.queue.drv_priv,
++		video->queue.queue.type, video->queue.queue.io_modes);
 +
  	if ((ret = uvcg_queue_enable(&video->queue, 1)) < 0)
  		return ret;