Back in the old days there was probably a reason to require that controls
that are being used to access using VIDIOC_{TRY,G,S}_EXT_CTRLS belonged to
the same class. These days such reason does not exist, or at least cannot be
remembered, and concrete examples of the opposite can be seen: a single
(sub)device may well offer controls that belong to different classes and
there is no reason to deny changing them atomically.
Remove all checks of ctrl_class in existing drivers and the control
framework.
Signed-off-by: Sakari Ailus <sakari.ai...@iki.fi>
---
.../DocBook/media/v4l/vidioc-g-ext-ctrls.xml | 41 +++++-------
drivers/media/radio/si4713-i2c.c | 6 --
drivers/media/video/cx231xx/cx231xx-417.c | 6 --
drivers/media/video/cx23885/cx23885-417.c | 8 --
drivers/media/video/cx88/cx88-blackbird.c | 7 --
drivers/media/video/hdpvr/hdpvr-video.c | 70 ++++++++------------
drivers/media/video/saa7134/saa6752hs.c | 6 --
drivers/media/video/saa7134/saa7134-empress.c | 5 --
drivers/media/video/saa7164/saa7164-encoder.c | 70 ++++++++------------
drivers/media/video/saa7164/saa7164-vbi.c | 70 ++++++++------------
drivers/media/video/tlg2300/pd-radio.c | 6 --
drivers/media/video/v4l2-ctrls.c | 18 ++----
drivers/media/video/v4l2-ioctl.c | 12 ++--
13 files changed, 111 insertions(+), 214 deletions(-)
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
b/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
index 5122ce8..d22a26e 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
@@ -55,9 +55,7 @@ VIDIOC_TRY_EXT_CTRLS</para>
<title>Description</title>
<para>These ioctls allow the caller to get or set multiple
-controls atomically. Control IDs are grouped into control classes (see
-<xref linkend="ctrl-class" />) and all controls in the control array
-must belong to the same control class.</para>
+controls atomically.</para>
<para>Applications must always fill in the
<structfield>count</structfield>,
@@ -69,10 +67,10 @@ initialize the &v4l2-ext-control; array pointed to by the
<para>To get the current value of a set of controls applications
initialize the <structfield>id</structfield>,
-<structfield>size</structfield> and <structfield>reserved2</structfield> fields
-of each &v4l2-ext-control; and call the
-<constant>VIDIOC_G_EXT_CTRLS</constant> ioctl. String controls controls
-must also set the <structfield>string</structfield> field.</para>
+<structfield>size</structfield>, <structfield>ctrl_class</structfield> and
+<structfield>reserved2</structfield> fields of each &v4l2-ext-control; and
+call the <constant>VIDIOC_G_EXT_CTRLS</constant> ioctl. String controls
+controls must also set the <structfield>string</structfield> field.</para>
<para>If the <structfield>size</structfield> is too small to
receive the control result (only relevant for pointer-type controls
@@ -87,7 +85,7 @@ value. It is guaranteed that that is sufficient memory.
<para>To change the value of a set of controls applications
initialize the <structfield>id</structfield>, <structfield>size</structfield>,
-<structfield>reserved2</structfield> and
+<structfield>ctrl_class</structfield>, <structfield>reserved2</structfield> and
<structfield>value/string</structfield> fields of each &v4l2-ext-control; and
call the <constant>VIDIOC_S_EXT_CTRLS</constant> ioctl. The controls
will only be set if <emphasis>all</emphasis> control values are
@@ -95,19 +93,12 @@ valid.</para>
<para>To check if a set of controls have correct values applications
initialize the <structfield>id</structfield>, <structfield>size</structfield>,
-<structfield>reserved2</structfield> and
+<structfield>ctrl_class</structfield>, <structfield>reserved2</structfield> and
<structfield>value/string</structfield> fields of each &v4l2-ext-control; and
call the <constant>VIDIOC_TRY_EXT_CTRLS</constant> ioctl. It is up to
the driver whether wrong values are automatically adjusted to a valid
value or if an error is returned.</para>
- <para>When the <structfield>id</structfield> or
-<structfield>ctrl_class</structfield> is invalid drivers return an
-&EINVAL;. When the value is out of bounds drivers can choose to take
-the closest valid value or return an &ERANGE;, whatever seems more
-appropriate. In the first case the new value is set in
-&v4l2-ext-control;.</para>
-
<para>The driver will only set/get these controls if all control
values are correct. This prevents the situation where only some of the
controls were set/get. Only low-level errors (⪚ a failed i2c
@@ -182,8 +173,11 @@ applications must set the array to zero.</entry>
<row>
<entry>__u32</entry>
<entry><structfield>ctrl_class</structfield></entry>
- <entry>The control class to which all controls belong, see
-<xref linkend="ctrl-class" />.</entry>
+ <entry>
+ <structfield>ctrl_class</structfield> must be set to zero by
+ the applications.
+ </entry>
+
</row>
<row>
<entry>__u32</entry>
@@ -270,12 +264,11 @@ These controls are described in <xref
<varlistentry>
<term><errorcode>EINVAL</errorcode></term>
<listitem>
- <para>The &v4l2-ext-control; <structfield>id</structfield>
-is invalid or the &v4l2-ext-controls;
-<structfield>ctrl_class</structfield> is invalid. This error code is
-also returned by the <constant>VIDIOC_S_EXT_CTRLS</constant> and
-<constant>VIDIOC_TRY_EXT_CTRLS</constant> ioctls if two or more
-control values are in conflict.</para>
+ <para>The &v4l2-ext-control; <structfield>id</structfield> is
+invalid. This error code is also returned by the
+<constant>VIDIOC_S_EXT_CTRLS</constant> and
+<constant>VIDIOC_TRY_EXT_CTRLS</constant> ioctls if two or more control
+values are in conflict.</para>
</listitem>
</varlistentry>
<varlistentry>
diff --git a/drivers/media/radio/si4713-i2c.c b/drivers/media/radio/si4713-i2c.c
index c9f4a8e..b6417bb 100644
--- a/drivers/media/radio/si4713-i2c.c
+++ b/drivers/media/radio/si4713-i2c.c
@@ -1531,9 +1531,6 @@ static int si4713_s_ext_ctrls(struct v4l2_subdev *sd,
struct si4713_device *sdev = to_si4713_device(sd);
int i;
- if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
- return -EINVAL;
-
for (i = 0; i < ctrls->count; i++) {
int err;
@@ -1569,9 +1566,6 @@ static int si4713_g_ext_ctrls(struct v4l2_subdev *sd,
struct si4713_device *sdev = to_si4713_device(sd);
int i;
- if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
- return -EINVAL;
-
for (i = 0; i < ctrls->count; i++) {
int err;
diff --git a/drivers/media/video/cx231xx/cx231xx-417.c
b/drivers/media/video/cx231xx/cx231xx-417.c
index f8f0e59..21fceb4 100644
--- a/drivers/media/video/cx231xx/cx231xx-417.c
+++ b/drivers/media/video/cx231xx/cx231xx-417.c
@@ -1825,8 +1825,6 @@ static int vidioc_g_ext_ctrls(struct file *file, void
*priv,
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
dprintk(3, "enter vidioc_g_ext_ctrls()\n");
- if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
dprintk(3, "exit vidioc_g_ext_ctrls()\n");
return cx2341x_ext_ctrls(&dev->mpeg_params, 0, f, VIDIOC_G_EXT_CTRLS);
}
@@ -1839,8 +1837,6 @@ static int vidioc_s_ext_ctrls(struct file *file, void
*priv,
struct cx2341x_mpeg_params p;
int err;
dprintk(3, "enter vidioc_s_ext_ctrls()\n");
- if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
p = dev->mpeg_params;
err = cx2341x_ext_ctrls(&p, 0, f, VIDIOC_TRY_EXT_CTRLS);
@@ -1864,8 +1860,6 @@ static int vidioc_try_ext_ctrls(struct file *file, void
*priv,
struct cx2341x_mpeg_params p;
int err;
dprintk(3, "enter vidioc_try_ext_ctrls()\n");
- if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
p = dev->mpeg_params;
err = cx2341x_ext_ctrls(&p, 0, f, VIDIOC_TRY_EXT_CTRLS);
diff --git a/drivers/media/video/cx23885/cx23885-417.c
b/drivers/media/video/cx23885/cx23885-417.c
index 67c4a59..c95bc00 100644
--- a/drivers/media/video/cx23885/cx23885-417.c
+++ b/drivers/media/video/cx23885/cx23885-417.c
@@ -1486,8 +1486,6 @@ static int vidioc_g_ext_ctrls(struct file *file, void
*priv,
struct cx23885_fh *fh = priv;
struct cx23885_dev *dev = fh->dev;
- if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
return cx2341x_ext_ctrls(&dev->mpeg_params, 0, f, VIDIOC_G_EXT_CTRLS);
}
@@ -1499,9 +1497,6 @@ static int vidioc_s_ext_ctrls(struct file *file, void
*priv,
struct cx2341x_mpeg_params p;
int err;
- if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
-
p = dev->mpeg_params;
err = cx2341x_ext_ctrls(&p, 0, f, VIDIOC_S_EXT_CTRLS);
@@ -1521,9 +1516,6 @@ static int vidioc_try_ext_ctrls(struct file *file, void
*priv,
struct cx2341x_mpeg_params p;
int err;
- if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
-
p = dev->mpeg_params;
err = cx2341x_ext_ctrls(&p, 0, f, VIDIOC_TRY_EXT_CTRLS);
return err;
diff --git a/drivers/media/video/cx88/cx88-blackbird.c
b/drivers/media/video/cx88/cx88-blackbird.c
index e46446a..7e66d5e 100644
--- a/drivers/media/video/cx88/cx88-blackbird.c
+++ b/drivers/media/video/cx88/cx88-blackbird.c
@@ -848,8 +848,6 @@ static int vidioc_g_ext_ctrls (struct file *file, void
*priv,
{
struct cx8802_dev *dev = ((struct cx8802_fh *)priv)->dev;
- if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
return cx2341x_ext_ctrls(&dev->params, 0, f, VIDIOC_G_EXT_CTRLS);
}
@@ -860,9 +858,6 @@ static int vidioc_s_ext_ctrls (struct file *file, void
*priv,
struct cx2341x_mpeg_params p;
int err;
- if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
-
if (dev->mpeg_active)
blackbird_stop_codec(dev);
@@ -882,8 +877,6 @@ static int vidioc_try_ext_ctrls (struct file *file, void
*priv,
struct cx2341x_mpeg_params p;
int err;
- if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
p = dev->params;
err = cx2341x_ext_ctrls(&p, 0, f, VIDIOC_TRY_EXT_CTRLS);
diff --git a/drivers/media/video/hdpvr/hdpvr-video.c
b/drivers/media/video/hdpvr/hdpvr-video.c
index 087f7c0..73d3ea9 100644
--- a/drivers/media/video/hdpvr/hdpvr-video.c
+++ b/drivers/media/video/hdpvr/hdpvr-video.c
@@ -912,21 +912,16 @@ static int vidioc_g_ext_ctrls(struct file *file, void
*priv,
struct hdpvr_device *dev = fh->dev;
int i, err = 0;
- if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
- for (i = 0; i < ctrls->count; i++) {
- struct v4l2_ext_control *ctrl = ctrls->controls + i;
+ for (i = 0; i < ctrls->count; i++) {
+ struct v4l2_ext_control *ctrl = ctrls->controls + i;
- err = hdpvr_get_ctrl(&dev->options, ctrl);
- if (err) {
- ctrls->error_idx = i;
- break;
- }
+ err = hdpvr_get_ctrl(&dev->options, ctrl);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
}
- return err;
-
}
-
- return -EINVAL;
+ return err;
}
@@ -984,21 +979,17 @@ static int vidioc_try_ext_ctrls(struct file *file, void
*priv,
struct hdpvr_device *dev = fh->dev;
int i, err = 0;
- if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
- for (i = 0; i < ctrls->count; i++) {
- struct v4l2_ext_control *ctrl = ctrls->controls + i;
+ for (i = 0; i < ctrls->count; i++) {
+ struct v4l2_ext_control *ctrl = ctrls->controls + i;
- err = hdpvr_try_ctrl(ctrl,
- dev->flags & HDPVR_FLAG_AC3_CAP);
- if (err) {
- ctrls->error_idx = i;
- break;
- }
+ err = hdpvr_try_ctrl(ctrl,
+ dev->flags & HDPVR_FLAG_AC3_CAP);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
}
- return err;
}
-
- return -EINVAL;
+ return err;
}
@@ -1082,27 +1073,22 @@ static int vidioc_s_ext_ctrls(struct file *file, void
*priv,
struct hdpvr_device *dev = fh->dev;
int i, err = 0;
- if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
- for (i = 0; i < ctrls->count; i++) {
- struct v4l2_ext_control *ctrl = ctrls->controls + i;
+ for (i = 0; i < ctrls->count; i++) {
+ struct v4l2_ext_control *ctrl = ctrls->controls + i;
- err = hdpvr_try_ctrl(ctrl,
- dev->flags & HDPVR_FLAG_AC3_CAP);
- if (err) {
- ctrls->error_idx = i;
- break;
- }
- err = hdpvr_set_ctrl(dev, ctrl);
- if (err) {
- ctrls->error_idx = i;
- break;
- }
+ err = hdpvr_try_ctrl(ctrl,
+ dev->flags & HDPVR_FLAG_AC3_CAP);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
+ }
+ err = hdpvr_set_ctrl(dev, ctrl);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
}
- return err;
-
}
-
- return -EINVAL;
+ return err;
}
static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
diff --git a/drivers/media/video/saa7134/saa6752hs.c
b/drivers/media/video/saa7134/saa6752hs.c
index f9f29cc..37ef9c8 100644
--- a/drivers/media/video/saa7134/saa6752hs.c
+++ b/drivers/media/video/saa7134/saa6752hs.c
@@ -799,9 +799,6 @@ static int saa6752hs_do_ext_ctrls(struct v4l2_subdev *sd,
struct v4l2_ext_contro
struct saa6752hs_mpeg_params params;
int i;
- if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
-
params = h->params;
for (i = 0; i < ctrls->count; i++) {
int err = handle_ctrl(h->has_ac3, ¶ms, ctrls->controls + i,
set);
@@ -831,9 +828,6 @@ static int saa6752hs_g_ext_ctrls(struct v4l2_subdev *sd,
struct v4l2_ext_control
struct saa6752hs_state *h = to_state(sd);
int i;
- if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
-
for (i = 0; i < ctrls->count; i++) {
int err = get_ctrl(h->has_ac3, &h->params, ctrls->controls + i);
diff --git a/drivers/media/video/saa7134/saa7134-empress.c
b/drivers/media/video/saa7134/saa7134-empress.c
index dde361a..c71f1ba 100644
--- a/drivers/media/video/saa7134/saa7134-empress.c
+++ b/drivers/media/video/saa7134/saa7134-empress.c
@@ -317,9 +317,6 @@ static int empress_s_ext_ctrls(struct file *file, void
*priv,
if (ctrls->count == 0)
return 0;
- if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
-
err = saa_call_empress(dev, core, s_ext_ctrls, ctrls);
ts_init_encoder(dev);
@@ -331,8 +328,6 @@ static int empress_g_ext_ctrls(struct file *file, void
*priv,
{
struct saa7134_dev *dev = file->private_data;
- if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
- return -EINVAL;
return saa_call_empress(dev, core, g_ext_ctrls, ctrls);
}
diff --git a/drivers/media/video/saa7164/saa7164-encoder.c
b/drivers/media/video/saa7164/saa7164-encoder.c
index 2fd38a0..cfd71f8 100644
--- a/drivers/media/video/saa7164/saa7164-encoder.c
+++ b/drivers/media/video/saa7164/saa7164-encoder.c
@@ -528,21 +528,16 @@ static int vidioc_g_ext_ctrls(struct file *file, void
*priv,
struct saa7164_port *port = fh->port;
int i, err = 0;
- if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
- for (i = 0; i < ctrls->count; i++) {
- struct v4l2_ext_control *ctrl = ctrls->controls + i;
-
- err = saa7164_get_ctrl(port, ctrl);
- if (err) {
- ctrls->error_idx = i;
- break;
- }
- }
- return err;
+ for (i = 0; i < ctrls->count; i++) {
+ struct v4l2_ext_control *ctrl = ctrls->controls + i;
+ err = saa7164_get_ctrl(port, ctrl);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
+ }
}
-
- return -EINVAL;
+ return err;
}
static int saa7164_try_ctrl(struct v4l2_ext_control *ctrl, int ac3)
@@ -602,20 +597,16 @@ static int vidioc_try_ext_ctrls(struct file *file, void
*priv,
{
int i, err = 0;
- if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
- for (i = 0; i < ctrls->count; i++) {
- struct v4l2_ext_control *ctrl = ctrls->controls + i;
+ for (i = 0; i < ctrls->count; i++) {
+ struct v4l2_ext_control *ctrl = ctrls->controls + i;
- err = saa7164_try_ctrl(ctrl, 0);
- if (err) {
- ctrls->error_idx = i;
- break;
- }
+ err = saa7164_try_ctrl(ctrl, 0);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
}
- return err;
}
-
- return -EINVAL;
+ return err;
}
static int saa7164_set_ctrl(struct saa7164_port *port,
@@ -677,26 +668,21 @@ static int vidioc_s_ext_ctrls(struct file *file, void
*priv,
struct saa7164_port *port = fh->port;
int i, err = 0;
- if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
- for (i = 0; i < ctrls->count; i++) {
- struct v4l2_ext_control *ctrl = ctrls->controls + i;
+ for (i = 0; i < ctrls->count; i++) {
+ struct v4l2_ext_control *ctrl = ctrls->controls + i;
- err = saa7164_try_ctrl(ctrl, 0);
- if (err) {
- ctrls->error_idx = i;
- break;
- }
- err = saa7164_set_ctrl(port, ctrl);
- if (err) {
- ctrls->error_idx = i;
- break;
- }
+ err = saa7164_try_ctrl(ctrl, 0);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
+ }
+ err = saa7164_set_ctrl(port, ctrl);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
}
- return err;
-
}
-
- return -EINVAL;
+ return err;
}
static int vidioc_querycap(struct file *file, void *priv,
diff --git a/drivers/media/video/saa7164/saa7164-vbi.c
b/drivers/media/video/saa7164/saa7164-vbi.c
index e2e0341..4524429 100644
--- a/drivers/media/video/saa7164/saa7164-vbi.c
+++ b/drivers/media/video/saa7164/saa7164-vbi.c
@@ -491,21 +491,16 @@ static int vidioc_g_ext_ctrls(struct file *file, void
*priv,
struct saa7164_port *port = fh->port;
int i, err = 0;
- if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
- for (i = 0; i < ctrls->count; i++) {
- struct v4l2_ext_control *ctrl = ctrls->controls + i;
-
- err = saa7164_get_ctrl(port, ctrl);
- if (err) {
- ctrls->error_idx = i;
- break;
- }
- }
- return err;
+ for (i = 0; i < ctrls->count; i++) {
+ struct v4l2_ext_control *ctrl = ctrls->controls + i;
+ err = saa7164_get_ctrl(port, ctrl);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
+ }
}
-
- return -EINVAL;
+ return err;
}
static int saa7164_try_ctrl(struct v4l2_ext_control *ctrl, int ac3)
@@ -550,20 +545,16 @@ static int vidioc_try_ext_ctrls(struct file *file, void
*priv,
{
int i, err = 0;
- if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
- for (i = 0; i < ctrls->count; i++) {
- struct v4l2_ext_control *ctrl = ctrls->controls + i;
+ for (i = 0; i < ctrls->count; i++) {
+ struct v4l2_ext_control *ctrl = ctrls->controls + i;
- err = saa7164_try_ctrl(ctrl, 0);
- if (err) {
- ctrls->error_idx = i;
- break;
- }
+ err = saa7164_try_ctrl(ctrl, 0);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
}
- return err;
}
-
- return -EINVAL;
+ return err;
}
static int saa7164_set_ctrl(struct saa7164_port *port,
@@ -616,26 +607,21 @@ static int vidioc_s_ext_ctrls(struct file *file, void
*priv,
struct saa7164_port *port = fh->port;
int i, err = 0;
- if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
- for (i = 0; i < ctrls->count; i++) {
- struct v4l2_ext_control *ctrl = ctrls->controls + i;
+ for (i = 0; i < ctrls->count; i++) {
+ struct v4l2_ext_control *ctrl = ctrls->controls + i;
- err = saa7164_try_ctrl(ctrl, 0);
- if (err) {
- ctrls->error_idx = i;
- break;
- }
- err = saa7164_set_ctrl(port, ctrl);
- if (err) {
- ctrls->error_idx = i;
- break;
- }
+ err = saa7164_try_ctrl(ctrl, 0);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
+ }
+ err = saa7164_set_ctrl(port, ctrl);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
}
- return err;
-
}
-
- return -EINVAL;
+ return err;
}
static int vidioc_querycap(struct file *file, void *priv,
diff --git a/drivers/media/video/tlg2300/pd-radio.c
b/drivers/media/video/tlg2300/pd-radio.c
index 4fad1df..65674b1 100644
--- a/drivers/media/video/tlg2300/pd-radio.c
+++ b/drivers/media/video/tlg2300/pd-radio.c
@@ -271,9 +271,6 @@ static int tlg_fm_vidioc_g_exts_ctrl(struct file *file,
void *fh,
struct poseidon *p = file->private_data;
int i;
- if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
- return -EINVAL;
-
for (i = 0; i < ctrls->count; i++) {
struct v4l2_ext_control *ctrl = ctrls->controls + i;
@@ -291,9 +288,6 @@ static int tlg_fm_vidioc_s_exts_ctrl(struct file *file,
void *fh,
{
int i;
- if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
- return -EINVAL;
-
for (i = 0; i < ctrls->count; i++) {
struct v4l2_ext_control *ctrl = ctrls->controls + i;
diff --git a/drivers/media/video/v4l2-ctrls.c b/drivers/media/video/v4l2-ctrls.c
index 06b6014..e5bde4f 100644
--- a/drivers/media/video/v4l2-ctrls.c
+++ b/drivers/media/video/v4l2-ctrls.c
@@ -1841,9 +1841,6 @@ static int prepare_ext_ctrls(struct v4l2_ctrl_handler
*hdl,
cs->error_idx = i;
- if (cs->ctrl_class && V4L2_CTRL_ID2CLASS(id) != cs->ctrl_class)
- return -EINVAL;
-
/* Old-style private controls are not allowed for
extended controls */
if (id >= V4L2_CID_PRIVATE_BASE)
@@ -1904,13 +1901,10 @@ static int prepare_ext_ctrls(struct v4l2_ctrl_handler
*hdl,
}
/* Handles the corner case where cs->count == 0. It checks whether the
- specified control class exists. If that class ID is 0, then it checks
- whether there are any controls at all. */
-static int class_check(struct v4l2_ctrl_handler *hdl, u32 ctrl_class)
+ there are any controls at all. */
+static int handler_check(struct v4l2_ctrl_handler *hdl)
{
- if (ctrl_class == 0)
- return list_empty(&hdl->ctrl_refs) ? -EINVAL : 0;
- return find_ref_lock(hdl, ctrl_class | 1) ? 0 : -EINVAL;
+ return list_empty(&hdl->ctrl_refs) ? -EINVAL : 0;
}
@@ -1924,13 +1918,12 @@ int v4l2_g_ext_ctrls(struct v4l2_ctrl_handler *hdl,
struct v4l2_ext_controls *cs
int i, j;
cs->error_idx = cs->count;
- cs->ctrl_class = V4L2_CTRL_ID2CLASS(cs->ctrl_class);
if (hdl == NULL)
return -EINVAL;
if (cs->count == 0)
- return class_check(hdl, cs->ctrl_class);
+ return handler_check(hdl);
if (cs->count > ARRAY_SIZE(helper)) {
helpers = kmalloc(sizeof(helper[0]) * cs->count, GFP_KERNEL);
@@ -2131,13 +2124,12 @@ static int try_set_ext_ctrls(struct v4l2_fh *fh, struct
v4l2_ctrl_handler *hdl,
int ret;
cs->error_idx = cs->count;
- cs->ctrl_class = V4L2_CTRL_ID2CLASS(cs->ctrl_class);
if (hdl == NULL)
return -EINVAL;
if (cs->count == 0)
- return class_check(hdl, cs->ctrl_class);
+ return handler_check(hdl);
if (cs->count > ARRAY_SIZE(helper)) {
helpers = kmalloc(sizeof(helper[0]) * cs->count, GFP_KERNEL);
diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c
index 9f80e9d..75e31f6 100644
--- a/drivers/media/video/v4l2-ioctl.c
+++ b/drivers/media/video/v4l2-ioctl.c
@@ -391,7 +391,6 @@ static inline void v4l_print_ext_ctrls(unsigned int cmd,
if (!(vfd->debug & V4L2_DEBUG_IOCTL_ARG))
return;
dbgarg(cmd, "");
- printk(KERN_CONT "class=0x%x", c->ctrl_class);
for (i = 0; i < c->count; i++) {
if (show_vals && !c->controls[i].size)
printk(KERN_CONT " id/val=0x%x/0x%x",
@@ -417,11 +416,12 @@ static inline int check_ext_ctrls(struct
v4l2_ext_controls *c, int allow_priv)
Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
is it allowed for backwards compatibility.
*/
- if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
- return 0;
- /* Check that all controls are from the same control class. */
+ if (allow_priv)
+ return 1;
+ /* Check that none of the controls are private. */
for (i = 0; i < c->count; i++) {
- if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
+ if (V4L2_CTRL_ID2CLASS(c->controls[i].id) ==
+ V4L2_CID_PRIVATE_BASE) {
c->error_idx = i;
return 0;
}
@@ -1467,7 +1467,6 @@ static long __video_do_ioctl(struct file *file,
struct v4l2_ext_controls ctrls;
struct v4l2_ext_control ctrl;
- ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
ctrls.count = 1;
ctrls.controls = &ctrl;
ctrl.id = p->id;
@@ -1512,7 +1511,6 @@ static long __video_do_ioctl(struct file *file,
if (!ops->vidioc_s_ext_ctrls)
break;
- ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
ctrls.count = 1;
ctrls.controls = &ctrl;
ctrl.id = p->id;
--
1.7.2.5
--
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