Merge tag 'media/v4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - new Mediatek drivers: mtk-mdp and mtk-vcodec

 - some additions at the media documentation

 - the CEC core and drivers were promoted from staging to mainstream

 - some cleanups at the DVB core

 - the LIRC serial driver got promoted from staging to mainstream

 - added a driver for Renesas R-Car FDP1 driver

 - add DVBv5 statistics support to mn88473 driver

 - several fixes related to printk continuation lines

 - add support for HSV encoding formats

 - lots of other cleanups, fixups and driver improvements.

* tag 'media/v4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (496 commits)
  [media] v4l: tvp5150: Add missing break in set control handler
  [media] v4l: tvp5150: Don't inline the tvp5150_selmux() function
  [media] v4l: tvp5150: Compile tvp5150_link_setup out if !CONFIG_MEDIA_CONTROLLER
  [media] em28xx: don't store usb_device at struct em28xx
  [media] em28xx: use usb_interface for dev_foo() calls
  [media] em28xx: don't change the device's name
  [media] mn88472: fix chip id check on probe
  [media] mn88473: fix chip id check on probe
  [media] lirc: fix error paths in lirc_cdev_add()
  [media] s5p-mfc: Add support for MFC v8 available in Exynos 5433 SoCs
  [media] s5p-mfc: Rework clock handling
  [media] s5p-mfc: Don't keep clock prepared all the time
  [media] s5p-mfc: Kill all IS_ERR_OR_NULL in clocks management code
  [media] s5p-mfc: Remove dead conditional code
  [media] s5p-mfc: Ensure that clock is disabled before turning power off
  [media] s5p-mfc: Remove special clock rate management
  [media] s5p-mfc: Use printk_ratelimited for reporting ioctl errors
  [media] s5p-mfc: Set DMA_ATTR_ALLOC_SINGLE_PAGES
  [media] vivid: Set color_enc on HSV formats
  [media] v4l2-tpg: Init hv_enc field with a valid value
  ...

1 files changed, 17 insertions, 13 deletions

diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index bacecbd68a6d..eac9565dc3d8 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -409,7 +409,6 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
 	struct v4l2_plane32 __user *uplane32;
 	struct v4l2_plane __user *uplane;
 	compat_caddr_t p;
-	int num_planes;
 	int ret;
 
 	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) ||
@@ -429,12 +428,15 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
 			return -EFAULT;
 
 	if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
-		num_planes = kp->length;
-		if (num_planes == 0) {
+		unsigned int num_planes;
+
+		if (kp->length == 0) {
 			kp->m.planes = NULL;
 			/* num_planes == 0 is legal, e.g. when userspace doesn't
 			 * need planes array on DQBUF*/
 			return 0;
+		} else if (kp->length > VIDEO_MAX_PLANES) {
+			return -EINVAL;
 		}
 
 		if (get_user(p, &up->m.planes))
@@ -442,16 +444,16 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
 
 		uplane32 = compat_ptr(p);
 		if (!access_ok(VERIFY_READ, uplane32,
-				num_planes * sizeof(struct v4l2_plane32)))
+				kp->length * sizeof(struct v4l2_plane32)))
 			return -EFAULT;
 
 		/* We don't really care if userspace decides to kill itself
 		 * by passing a very big num_planes value */
-		uplane = compat_alloc_user_space(num_planes *
-						sizeof(struct v4l2_plane));
+		uplane = compat_alloc_user_space(kp->length *
+						 sizeof(struct v4l2_plane));
 		kp->m.planes = (__force struct v4l2_plane *)uplane;
 
-		while (--num_planes >= 0) {
+		for (num_planes = 0; num_planes < kp->length; num_planes++) {
 			ret = get_v4l2_plane32(uplane, uplane32, kp->memory);
 			if (ret)
 				return ret;
@@ -665,7 +667,7 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext
 {
 	struct v4l2_ext_control32 __user *ucontrols;
 	struct v4l2_ext_control __user *kcontrols;
-	int n;
+	unsigned int n;
 	compat_caddr_t p;
 
 	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) ||
@@ -675,20 +677,22 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext
 		copy_from_user(kp->reserved, up->reserved,
 			       sizeof(kp->reserved)))
 			return -EFAULT;
-	n = kp->count;
-	if (n == 0) {
+	if (kp->count == 0) {
 		kp->controls = NULL;
 		return 0;
+	} else if (kp->count > V4L2_CID_MAX_CTRLS) {
+		return -EINVAL;
 	}
 	if (get_user(p, &up->controls))
 		return -EFAULT;
 	ucontrols = compat_ptr(p);
 	if (!access_ok(VERIFY_READ, ucontrols,
-			n * sizeof(struct v4l2_ext_control32)))
+			kp->count * sizeof(struct v4l2_ext_control32)))
 		return -EFAULT;
-	kcontrols = compat_alloc_user_space(n * sizeof(struct v4l2_ext_control));
+	kcontrols = compat_alloc_user_space(kp->count *
+					    sizeof(struct v4l2_ext_control));
 	kp->controls = (__force struct v4l2_ext_control *)kcontrols;
-	while (--n >= 0) {
+	for (n = 0; n < kp->count; n++) {
 		u32 id;
 
 		if (copy_in_user(kcontrols, ucontrols, sizeof(*ucontrols)))