From 8407653f5e2b9805958e0a392c0411ce027a3934 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Mon, 4 Feb 2013 09:18:14 -0300 Subject: [PATCH] [media] stk-webcam: zero the priv field of v4l2_pix_format The priv field should be set to 0. In this case the driver abused the priv field for internal housekeeping. Modify the code so priv is no longer used for that purpose. Signed-off-by: Hans Verkuil Tested-by: Arvydas Sidorenko Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/stkwebcam/stk-webcam.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c index a00edf3..bb52457 100644 --- a/drivers/media/usb/stkwebcam/stk-webcam.c +++ b/drivers/media/usb/stkwebcam/stk-webcam.c @@ -897,11 +897,12 @@ static int stk_vidioc_g_fmt_vid_cap(struct file *filp, pix_format->bytesperline = 2 * pix_format->width; pix_format->sizeimage = pix_format->bytesperline * pix_format->height; + pix_format->priv = 0; return 0; } -static int stk_vidioc_try_fmt_vid_cap(struct file *filp, - void *priv, struct v4l2_format *fmtd) +static int stk_try_fmt_vid_cap(struct file *filp, + struct v4l2_format *fmtd, int *idx) { int i; switch (fmtd->fmt.pix.pixelformat) { @@ -923,11 +924,13 @@ static int stk_vidioc_try_fmt_vid_cap(struct file *filp, < abs(fmtd->fmt.pix.width - stk_sizes[i].w))) { fmtd->fmt.pix.height = stk_sizes[i-1].h; fmtd->fmt.pix.width = stk_sizes[i-1].w; - fmtd->fmt.pix.priv = i - 1; + if (idx) + *idx = i - 1; } else { fmtd->fmt.pix.height = stk_sizes[i].h; fmtd->fmt.pix.width = stk_sizes[i].w; - fmtd->fmt.pix.priv = i; + if (idx) + *idx = i; } fmtd->fmt.pix.field = V4L2_FIELD_NONE; @@ -938,9 +941,16 @@ static int stk_vidioc_try_fmt_vid_cap(struct file *filp, fmtd->fmt.pix.bytesperline = 2 * fmtd->fmt.pix.width; fmtd->fmt.pix.sizeimage = fmtd->fmt.pix.bytesperline * fmtd->fmt.pix.height; + fmtd->fmt.pix.priv = 0; return 0; } +static int stk_vidioc_try_fmt_vid_cap(struct file *filp, + void *priv, struct v4l2_format *fmtd) +{ + return stk_try_fmt_vid_cap(filp, fmtd, NULL); +} + static int stk_setup_format(struct stk_camera *dev) { int i = 0; @@ -981,6 +991,7 @@ static int stk_vidioc_s_fmt_vid_cap(struct file *filp, void *priv, struct v4l2_format *fmtd) { int ret; + int idx; struct stk_camera *dev = video_drvdata(filp); if (dev == NULL) @@ -991,7 +1002,7 @@ static int stk_vidioc_s_fmt_vid_cap(struct file *filp, return -EBUSY; if (dev->owner && dev->owner != filp) return -EBUSY; - ret = stk_vidioc_try_fmt_vid_cap(filp, priv, fmtd); + ret = stk_try_fmt_vid_cap(filp, fmtd, &idx); if (ret) return ret; dev->owner = filp; @@ -999,7 +1010,7 @@ static int stk_vidioc_s_fmt_vid_cap(struct file *filp, dev->vsettings.palette = fmtd->fmt.pix.pixelformat; stk_free_buffers(dev); dev->frame_size = fmtd->fmt.pix.sizeimage; - dev->vsettings.mode = stk_sizes[fmtd->fmt.pix.priv].m; + dev->vsettings.mode = stk_sizes[idx].m; stk_initialise(dev); return stk_setup_format(dev); -- 2.7.4