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kernel: add uvc prep/queue logs

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This commit is contained in:
Brad Stein 2026-01-26 00:51:11 -03:00
parent df2ff4cc5c
commit eb40374389
1 changed files with 21 additions and 3 deletions
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24
scripts/kernel/uvc-debug.patch
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@ -1,6 +1,17 @@
--- a/drivers/usb/gadget/function/uvc_video.c --- a/drivers/usb/gadget/function/uvc_video.c
+++ b/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; video->req_size = req_size;
@ -17,7 +28,7 @@
/* We need to compensate the amount of requests to be /* We need to compensate the amount of requests to be
* allocated with the maximum amount of zero length requests. * allocated with the maximum amount of zero length requests.
* Since it is possible that hw_submit will initially * Since it is possible that hw_submit will initially
@@ -764,20 +774,63 @@ @@ -764,20 +778,70 @@
{ {
int ret; int ret;
@ -29,7 +40,7 @@
+ if (!video->uvc || !video->uvc->func.config || + if (!video->uvc || !video->uvc->func.config ||
+ !video->uvc->func.config->cdev) { + !video->uvc->func.config->cdev) {
+ pr_err("uvcg_video_enable: missing uvc/func/config video=%p uvc=%p\n", + pr_err("uvcg_video_enable: missing uvc/func/config video=%p uvc=%p\n",
+ video, video->uvc); + video, video->uvc);
+ return -ENODEV; + return -ENODEV;
+ } + }
+ +
@ -77,6 +88,13 @@
+ video->queue.queue.type, video->queue.queue.io_modes); + video->queue.queue.type, video->queue.queue.io_modes);
+ return -EINVAL; + 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) if ((ret = uvcg_queue_enable(&video->queue, 1)) < 0)
return ret; return ret;