From 72064c30574df63d52c3d0baeb9f9b585064f548 Mon Sep 17 00:00:00 2001 From: Evgeni Raikhel Date: Thu, 30 Aug 2018 17:29:13 +0300 Subject: [PATCH] Debug ioctl fmt desc The patch is useful to profile kernel calls invocation after applying kernel patches --- drivers/media/v4l2-core/v4l2-ioctl.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index cab63bb..e8b6590 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1105,6 +1105,9 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) const char *descr = NULL; u32 flags = 0; + printk(KERN_DEBUG "LRS dbg: read format description for pixel_format: %x\n", + fmt->pixelformat); + /* * We depart from the normal coding style here since the descriptions * should be aligned so it is easy to see which descriptions will be -- 2.7.4