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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-07-27 00:54:47 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-07-27 00:54:47 -0700 |
| commit | aa7eb8e78d8ecd6cd0475d86ea8385ff9cb47ece (patch) | |
| tree | 3f9e98fadd5124fb05e8f6f9b06aa23698d4f215 /drivers/media/video/pwc/pwc-v4l.c | |
| parent | cca8edfd2ec2a34d9f50f593bc753bb11e1bc1f5 (diff) | |
| parent | 3c6b50141ef9f0a8844bf1357b80c0cdf518bf05 (diff) | |
Merge branch 'next' into for-linus
Diffstat (limited to 'drivers/media/video/pwc/pwc-v4l.c')
| -rw-r--r-- | drivers/media/video/pwc/pwc-v4l.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/media/video/pwc/pwc-v4l.c b/drivers/media/video/pwc/pwc-v4l.c index aa87e462a95..f85c51249c7 100644 --- a/drivers/media/video/pwc/pwc-v4l.c +++ b/drivers/media/video/pwc/pwc-v4l.c @@ -379,8 +379,27 @@ static int pwc_s_input(struct file *file, void *fh, unsigned int i) static int pwc_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *c) { - int i; - + int i, idx; + u32 id; + + id = c->id; + if (id & V4L2_CTRL_FLAG_NEXT_CTRL) { + id &= V4L2_CTRL_ID_MASK; + id++; + idx = -1; + for (i = 0; i < ARRAY_SIZE(pwc_controls); i++) { + if (pwc_controls[i].id < id) + continue; + if (idx >= 0 + && pwc_controls[i].id > pwc_controls[idx].id) + continue; + idx = i; + } + if (idx < 0) + return -EINVAL; + memcpy(c, &pwc_controls[idx], sizeof pwc_controls[0]); + return 0; + } for (i = 0; i < sizeof(pwc_controls) / sizeof(struct v4l2_queryctrl); i++) { if (pwc_controls[i].id == c->id) { PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCTRL) found\n"); |