target/linux/bcm27xx/patches-5.15/950-0586-drivers-bcm2835_unicam-Add-logging-message-when-a-fr.patch

   1 From 1b61bce3ec65be520e45cf29431650d23a7b5d33 Mon Sep 17 00:00:00 2001
   2 From: Naushir Patuck <naush@raspberrypi.com>
   3 Date: Tue, 30 Nov 2021 10:39:41 +0000
   4 Subject: [PATCH] drivers: bcm2835_unicam: Add logging message when a
   5  frame is dropped.
   6
   7 If a dummy buffer is still active on a frame start, it indicates that this frame
   8 will be dropped. The explicit logging helps users identify performance issues.
   9
  10 Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
  11 ---
  12  drivers/media/platform/bcm2835/bcm2835-unicam.c | 3 +++
  13  1 file changed, 3 insertions(+)
  14
  15 --- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
  16 +++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
  17 @@ -952,6 +952,9 @@ static irqreturn_t unicam_isr(int irq, v
  18                         if (unicam->node[i].cur_frm)
  19                                 unicam->node[i].cur_frm->vb.vb2_buf.timestamp =
  20                                                                 ts;
  21 +                       else
  22 +                               unicam_dbg(2, unicam, "ISR: [%d] Dropping frame, buffer not available at FS\n",
  23 +                                          i);
  24                         /*
  25                          * Set the next frame output to go to a dummy frame
  26                          * if we have not managed to obtain another frame