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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-21 16:50:31 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-21 16:50:31 -0800
commit13a3cec8443290b082af2a5254562aca247fe591 (patch)
tree5c873a2c9333be348266234ac5d7101caa1b6d7d /drivers/media/video/v4l2-ctrls.c
parent973c9f4f49ca96a53bcf6384c4c59ccd26c33906 (diff)
parent88914bdf8c677ebd7e797adac05e47303fd6ac77 (diff)
Merge branch 'media_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'media_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (101 commits) [media] staging/lirc: fix mem leaks and ptr err usage [media] hdpvr: reduce latency of i2c read/write w/recycled buffer [media] hdpvr: enable IR part [media] rc/mceusb: timeout should be in ns, not us [media] v4l2-device: fix 'use-after-freed' oops [media] v4l2-dev: don't memset video_device.dev [media] zoran: use video_device_alloc instead of kmalloc [media] w9966: zero device state after a detach [media] v4l: Fix a use-before-set in the control framework [media] v4l: Include linux/videodev2.h in media/v4l2-ctrls.h [media] DocBook/v4l: update V4L2 revision and update copyright years [media] DocBook/v4l: fix validation error in dev-rds.xml [media] v4l2-ctrls: queryctrl shouldn't attempt to replace V4L2_CID_PRIVATE_BASE IDs [media] v4l2-ctrls: fix missing 'read-only' check [media] pvrusb2: Provide more information about IR units to lirc_zilog and ir-kbd-i2c [media] ir-kbd-i2c: Add back defaults setting for Zilog Z8's at addr 0x71 [media] lirc_zilog: Update TODO.lirc_zilog [media] lirc_zilog: Add Andy Walls to copyright notice and authors list [media] lirc_zilog: Remove useless struct i2c_driver.command function [media] lirc_zilog: Remove unneeded tests for existence of the IR Tx function ...
Diffstat (limited to 'drivers/media/video/v4l2-ctrls.c')
-rw-r--r--drivers/media/video/v4l2-ctrls.c34
1 files changed, 22 insertions, 12 deletions
diff --git a/drivers/media/video/v4l2-ctrls.c b/drivers/media/video/v4l2-ctrls.c
index 8f81efcfcf5..ef66d2af0c5 100644
--- a/drivers/media/video/v4l2-ctrls.c
+++ b/drivers/media/video/v4l2-ctrls.c
@@ -569,7 +569,7 @@ static int user_to_new(struct v4l2_ext_control *c,
int ret;
u32 size;
- ctrl->has_new = 1;
+ ctrl->is_new = 1;
switch (ctrl->type) {
case V4L2_CTRL_TYPE_INTEGER64:
ctrl->val64 = c->value64;
@@ -1280,8 +1280,12 @@ int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl)
if (ctrl->done)
continue;
- for (i = 0; i < master->ncontrols; i++)
- cur_to_new(master->cluster[i]);
+ for (i = 0; i < master->ncontrols; i++) {
+ if (master->cluster[i]) {
+ cur_to_new(master->cluster[i]);
+ master->cluster[i]->is_new = 1;
+ }
+ }
/* Skip button controls and read-only controls. */
if (ctrl->type == V4L2_CTRL_TYPE_BUTTON ||
@@ -1340,12 +1344,15 @@ int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc)
ctrl = ref->ctrl;
memset(qc, 0, sizeof(*qc));
- qc->id = ctrl->id;
+ if (id >= V4L2_CID_PRIVATE_BASE)
+ qc->id = id;
+ else
+ qc->id = ctrl->id;
strlcpy(qc->name, ctrl->name, sizeof(qc->name));
qc->minimum = ctrl->minimum;
qc->maximum = ctrl->maximum;
qc->default_value = ctrl->default_value;
- if (qc->type == V4L2_CTRL_TYPE_MENU)
+ if (ctrl->type == V4L2_CTRL_TYPE_MENU)
qc->step = 1;
else
qc->step = ctrl->step;
@@ -1645,7 +1652,7 @@ static int try_or_set_control_cluster(struct v4l2_ctrl *master, bool set)
if (ctrl == NULL)
continue;
- if (ctrl->has_new) {
+ if (ctrl->is_new) {
/* Double check this: it may have changed since the
last check in try_or_set_ext_ctrls(). */
if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED))
@@ -1719,13 +1726,13 @@ static int try_or_set_ext_ctrls(struct v4l2_ctrl_handler *hdl,
v4l2_ctrl_lock(ctrl);
- /* Reset the 'has_new' flags of the cluster */
+ /* Reset the 'is_new' flags of the cluster */
for (j = 0; j < master->ncontrols; j++)
if (master->cluster[j])
- master->cluster[j]->has_new = 0;
+ master->cluster[j]->is_new = 0;
/* Copy the new caller-supplied control values.
- user_to_new() sets 'has_new' to 1. */
+ user_to_new() sets 'is_new' to 1. */
ret = cluster_walk(i, cs, helpers, user_to_new);
if (!ret)
@@ -1820,15 +1827,18 @@ static int set_ctrl(struct v4l2_ctrl *ctrl, s32 *val)
int ret;
int i;
+ if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)
+ return -EACCES;
+
v4l2_ctrl_lock(ctrl);
- /* Reset the 'has_new' flags of the cluster */
+ /* Reset the 'is_new' flags of the cluster */
for (i = 0; i < master->ncontrols; i++)
if (master->cluster[i])
- master->cluster[i]->has_new = 0;
+ master->cluster[i]->is_new = 0;
ctrl->val = *val;
- ctrl->has_new = 1;
+ ctrl->is_new = 1;
ret = try_or_set_control_cluster(master, false);
if (!ret)
ret = try_or_set_control_cluster(master, true);