From: Kees Cook <keescook@chromium.org>
To: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Hans Verkuil <hverkuil@xs4all.nl>,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] media/saa7146: Convert timers to use timer_setup()
Date: Mon, 16 Oct 2017 16:10:12 -0700 [thread overview]
Message-ID: <20171016231012.GA99671@beast> (raw)
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly. This requires adding a pointer to
hold the timer's target file, as there won't be a way to pass this in the
future.
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-media@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
---
drivers/media/common/saa7146/saa7146_fops.c | 2 +-
drivers/media/common/saa7146/saa7146_vbi.c | 9 +++++----
include/media/drv-intf/saa7146_vv.h | 1 +
3 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/media/common/saa7146/saa7146_fops.c b/drivers/media/common/saa7146/saa7146_fops.c
index 930d2c94d5d3..c4664f0da874 100644
--- a/drivers/media/common/saa7146/saa7146_fops.c
+++ b/drivers/media/common/saa7146/saa7146_fops.c
@@ -559,7 +559,7 @@ int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv)
vbi->start[1] = 312;
vbi->count[1] = 16;
- init_timer(&vv->vbi_read_timeout);
+ timer_setup(&vv->vbi_read_timeout, NULL, 0);
vv->ov_fb.capability = V4L2_FBUF_CAP_LIST_CLIPPING;
vv->ov_fb.flags = V4L2_FBUF_FLAG_PRIMARY;
diff --git a/drivers/media/common/saa7146/saa7146_vbi.c b/drivers/media/common/saa7146/saa7146_vbi.c
index 69525ca4f52c..ae66c2325228 100644
--- a/drivers/media/common/saa7146/saa7146_vbi.c
+++ b/drivers/media/common/saa7146/saa7146_vbi.c
@@ -348,9 +348,10 @@ static void vbi_stop(struct saa7146_fh *fh, struct file *file)
spin_unlock_irqrestore(&dev->slock, flags);
}
-static void vbi_read_timeout(unsigned long data)
+static void vbi_read_timeout(struct timer_list *t)
{
- struct file *file = (struct file*)data;
+ struct saa7146_vv *vv = from_timer(vv, t, vbi_read_timeout);
+ struct file *file = vv->vbi_read_timeout_file;
struct saa7146_fh *fh = file->private_data;
struct saa7146_dev *dev = fh->dev;
@@ -401,8 +402,8 @@ static int vbi_open(struct saa7146_dev *dev, struct file *file)
sizeof(struct saa7146_buf),
file, &dev->v4l2_lock);
- vv->vbi_read_timeout.function = vbi_read_timeout;
- vv->vbi_read_timeout.data = (unsigned long)file;
+ vv->vbi_read_timeout.function = (TIMER_FUNC_TYPE)vbi_read_timeout;
+ vv->vbi_read_timeout_file = file;
/* initialize the brs */
if ( 0 != (SAA7146_USE_PORT_B_FOR_VBI & dev->ext_vv_data->flags)) {
diff --git a/include/media/drv-intf/saa7146_vv.h b/include/media/drv-intf/saa7146_vv.h
index 736f4f2d8290..926c5b145279 100644
--- a/include/media/drv-intf/saa7146_vv.h
+++ b/include/media/drv-intf/saa7146_vv.h
@@ -107,6 +107,7 @@ struct saa7146_vv
struct saa7146_dmaqueue vbi_dmaq;
struct v4l2_vbi_format vbi_fmt;
struct timer_list vbi_read_timeout;
+ struct file *vbi_read_timeout_file;
/* vbi workaround interrupt queue */
wait_queue_head_t vbi_wq;
int vbi_fieldcount;
--
2.7.4
--
Kees Cook
Pixel Security
next reply other threads:[~2017-10-16 23:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-16 23:10 Kees Cook [this message]
-- strict thread matches above, loose matches on Subject: below --
2017-10-05 0:52 [PATCH] media/saa7146: Convert timers to use timer_setup() Kees Cook
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