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kernel: log uvc prep ep state

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This commit is contained in:
Brad Stein 2026-01-26 22:32:54 -03:00
parent 2fa996ed61
commit c7b06c4456
1 changed files with 9 additions and 4 deletions
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13
scripts/kernel/uvc-debug.patch
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@ -1,6 +1,6 @@
--- 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
@@ -503,9 +503,17 @@ @@ -503,9 +503,22 @@
unsigned int max_req_size, req_size, header_size; unsigned int max_req_size, req_size, header_size;
unsigned int nreq; unsigned int nreq;
@ -10,6 +10,11 @@
+ +
max_req_size = video->max_req_size; max_req_size = video->max_req_size;
+ uvcg_info(&uvc->func,
+ "Video prep ep: ep=%p desc=%p maxpacket=%u maxburst=%u mult=%u\n",
+ video->ep, video->ep->desc, video->ep->maxpacket,
+ video->ep->maxburst, video->ep->mult);
+
if (!usb_endpoint_xfer_isoc(video->ep->desc)) { if (!usb_endpoint_xfer_isoc(video->ep->desc)) {
+ uvcg_info(&uvc->func, + uvcg_info(&uvc->func,
+ "Video prep non-isoc: attrs=0x%x max_req=%u imagesize=%u interval=%u\n", + "Video prep non-isoc: attrs=0x%x max_req=%u imagesize=%u interval=%u\n",
@ -18,7 +23,7 @@
video->req_size = max_req_size; video->req_size = max_req_size;
video->reqs_per_frame = video->uvc_num_requests = video->reqs_per_frame = video->uvc_num_requests =
DIV_ROUND_UP(video->imagesize, max_req_size); DIV_ROUND_UP(video->imagesize, max_req_size);
@@ -534,6 +542,16 @@ @@ -534,6 +547,16 @@
} }
video->req_size = req_size; video->req_size = req_size;
@ -35,7 +40,7 @@
/* 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
@@ -558,6 +576,11 @@ @@ -558,6 +581,11 @@
*/ */
uvc_video_prep_requests(video); uvc_video_prep_requests(video);
@ -47,7 +52,7 @@
for (i = 0; i < video->uvc_num_requests; i++) { for (i = 0; i < video->uvc_num_requests; i++) {
ureq = kzalloc(sizeof(struct uvc_request), GFP_KERNEL); ureq = kzalloc(sizeof(struct uvc_request), GFP_KERNEL);
if (ureq == NULL) if (ureq == NULL)
@@ -764,20 +787,70 @@ @@ -764,20 +792,70 @@
{ {
int ret; int ret;