mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

media: qcom: camss: Fix VFE-480 vfe_disable_output() 

vfe-480 is copied from vfe-17x and has the same racy idle timeout bug as in
17x.

Fix the vfe_disable_output() logic to no longer be racy and to conform
to the 17x way of quiescing and then resetting the VFE.

Fixes: 4edc8eae71 ("media: camss: Add initial support for VFE hardware version Titan 480")
Cc: stable@vger.kernel.org
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Bryan O'Donoghue 2023-08-30 16:16:11 +01:00 committed by Hans Verkuil
parent 3143ad282f
commit 7f24d29135
1 changed files with 3 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/media/platform/qcom/camss/camss-vfe-480.c
View File

@ -8,7 +8,6 @@
* Copyright (C) 2021 Jonathan Marek
*/
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/iopoll.h>
@ -328,35 +327,20 @@ static int vfe_enable_output(struct vfe_line *line)
return 0;
}
static int vfe_disable_output(struct vfe_line *line)
static void vfe_disable_output(struct vfe_line *line)
{
struct vfe_device *vfe = to_vfe(line);
struct vfe_output *output = &line->output;
unsigned long flags;
unsigned int i;
bool done;
int timeout = 0;
do {
spin_lock_irqsave(&vfe->output_lock, flags);
done = !output->gen2.active_num;
spin_unlock_irqrestore(&vfe->output_lock, flags);
usleep_range(10000, 20000);
if (timeout++ == 100) {
dev_err(vfe->camss->dev, "VFE idle timeout - resetting\n");
vfe_reset(vfe);
output->gen2.active_num = 0;
return 0;
}
} while (!done);
spin_lock_irqsave(&vfe->output_lock, flags);
for (i = 0; i < output->wm_num; i++)
vfe_wm_stop(vfe, output->wm_idx[i]);
output->gen2.active_num = 0;
spin_unlock_irqrestore(&vfe->output_lock, flags);
return 0;
vfe_reset(vfe);
}
/*