lkml.org 
[lkml]   [2019]   [Aug]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] media: atmel: atmel-isi: fix timeout value for stop streaming
Date
From: Alexandre Kroupski <alexandre.kroupski@ingenico.com>

In case of sensor malfunction, stop streaming timeout takes much longer
than expected.
This is due to conversion of time to jiffies: milliseconds multiplied
with HZ (ticks/second) gives out a value of jiffies with 10^3 greater.
We need to also divide by 10^3 to obtain the right jiffies value.
In other words FRAME_INTERVAL_MILLI_SEC must be in seconds in order to multiply
by HZ and get the right jiffies value to add to the current jiffies for the
timeout expire time.

Fixes: 195ebc43bf76 ("[media] V4L: at91: add Atmel Image Sensor Interface (ISI) support")
Signed-off-by: Alexandre Kroupski <alexandre.kroupski@ingenico.com>
Reviewed-by: Eugen Hristev <eugen.hristev@microchip.com>
---
drivers/media/platform/atmel/atmel-isi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/atmel/atmel-isi.c b/drivers/media/platform/atmel/atmel-isi.c
index d7d94c1..428f117 100644
--- a/drivers/media/platform/atmel/atmel-isi.c
+++ b/drivers/media/platform/atmel/atmel-isi.c
@@ -493,7 +493,7 @@ static void stop_streaming(struct vb2_queue *vq)
spin_unlock_irq(&isi->irqlock);

if (!isi->enable_preview_path) {
- timeout = jiffies + FRAME_INTERVAL_MILLI_SEC * HZ;
+ timeout = jiffies + (FRAME_INTERVAL_MILLI_SEC * HZ) / 1000;
/* Wait until the end of the current frame. */
while ((isi_readl(isi, ISI_STATUS) & ISI_CTRL_CDC) &&
time_before(jiffies, timeout))
--
2.7.4
\
 
 \ /
  Last update: 2019-08-20 13:38    [W:0.034 / U:1.916 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site