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