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media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4…
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…l2_format32

commit 486c521 upstream.

These helper functions do not really help. Move the code to the
__get/put_v4l2_format32 functions.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
[bwh: Rebased on top of some earlier fixes]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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Hans Verkuil authored and Ben Hutchings committed Mar 3, 2018
1 parent 846e214 commit f64f7bd
Showing 1 changed file with 20 additions and 72 deletions.
92 changes: 20 additions & 72 deletions drivers/media/v4l2-core/v4l2-compat-ioctl32.c
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Original file line number Diff line number Diff line change
Expand Up @@ -89,64 +89,6 @@ static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user
return 0;
}

static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
{
if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format)))
return -EFAULT;
return 0;
}

static inline int get_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp,
struct v4l2_pix_format_mplane __user *up)
{
if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format_mplane)))
return -EFAULT;
return 0;
}

static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
{
if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format)))
return -EFAULT;
return 0;
}

static inline int put_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp,
struct v4l2_pix_format_mplane __user *up)
{
if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format_mplane)))
return -EFAULT;
return 0;
}

static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
{
if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format)))
return -EFAULT;
return 0;
}

static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
{
if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format)))
return -EFAULT;
return 0;
}

static inline int get_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
{
if (copy_from_user(kp, up, sizeof(struct v4l2_sliced_vbi_format)))
return -EFAULT;
return 0;
}

static inline int put_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
{
if (copy_to_user(up, kp, sizeof(struct v4l2_sliced_vbi_format)))
return -EFAULT;
return 0;
}

struct v4l2_format32 {
__u32 type; /* enum v4l2_buf_type */
union {
Expand Down Expand Up @@ -184,20 +126,23 @@ static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us
switch (kp->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
return copy_from_user(&kp->fmt.pix, &up->fmt.pix,
sizeof(kp->fmt.pix)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
return get_v4l2_pix_format_mplane(&kp->fmt.pix_mp,
&up->fmt.pix_mp);
return copy_from_user(&kp->fmt.pix_mp, &up->fmt.pix_mp,
sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
return get_v4l2_window32(&kp->fmt.win, &up->fmt.win);
case V4L2_BUF_TYPE_VBI_CAPTURE:
case V4L2_BUF_TYPE_VBI_OUTPUT:
return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
return copy_from_user(&kp->fmt.vbi, &up->fmt.vbi,
sizeof(kp->fmt.vbi)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
return get_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
return copy_from_user(&kp->fmt.sliced, &up->fmt.sliced,
sizeof(kp->fmt.sliced)) ? -EFAULT : 0;
default:
printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
kp->type);
Expand Down Expand Up @@ -228,20 +173,23 @@ static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us
switch (kp->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
return copy_to_user(&up->fmt.pix, &kp->fmt.pix,
sizeof(kp->fmt.pix)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
return put_v4l2_pix_format_mplane(&kp->fmt.pix_mp,
&up->fmt.pix_mp);
return copy_to_user(&up->fmt.pix_mp, &kp->fmt.pix_mp,
sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
return put_v4l2_window32(&kp->fmt.win, &up->fmt.win);
case V4L2_BUF_TYPE_VBI_CAPTURE:
case V4L2_BUF_TYPE_VBI_OUTPUT:
return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
return copy_to_user(&up->fmt.vbi, &kp->fmt.vbi,
sizeof(kp->fmt.vbi)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
return put_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
return copy_to_user(&up->fmt.sliced, &kp->fmt.sliced,
sizeof(kp->fmt.sliced)) ? -EFAULT : 0;
default:
printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
kp->type);
Expand Down Expand Up @@ -548,10 +496,10 @@ static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_frame
if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) ||
get_user(tmp, &up->base) ||
get_user(kp->capability, &up->capability) ||
get_user(kp->flags, &up->flags))
get_user(kp->flags, &up->flags) ||
copy_from_user(&kp->fmt, &up->fmt, sizeof(up->fmt)))
return -EFAULT;
kp->base = (__force void *)compat_ptr(tmp);
get_v4l2_pix_format(&kp->fmt, &up->fmt);
return 0;
}

Expand All @@ -562,9 +510,9 @@ static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_frame
if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) ||
put_user(tmp, &up->base) ||
put_user(kp->capability, &up->capability) ||
put_user(kp->flags, &up->flags))
put_user(kp->flags, &up->flags) ||
copy_to_user(&up->fmt, &kp->fmt, sizeof(up->fmt)))
return -EFAULT;
put_v4l2_pix_format(&kp->fmt, &up->fmt);
return 0;
}

Expand Down

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