[PATCH v2 2/8] media: v4l2: remove unneeded compat ioctl handlers

Arnd Bergmann
2020-10-30T16:56:17Z

These seven commands are all compatible and do not need any
conversion handlers. The existing ones just copy 32-bit
integers around, and those are always compatible.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 42 -------------------
1 file changed, 42 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index 7c939d5c5232..a76f6ac5b1eb 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -1406,14 +1406,6 @@ static int put_v4l2_edid32(struct v4l2_edid __user *p64,
#define VIDIOC_PREPARE_BUF32 _IOWR('V', 93, struct v4l2_buffer32)
#define VIDIOC_PREPARE_BUF32_TIME32 _IOWR('V', 93, struct v4l2_buffer32_time32)

-#define VIDIOC_OVERLAY32 _IOW ('V', 14, s32)
-#define VIDIOC_STREAMON32 _IOW ('V', 18, s32)
-#define VIDIOC_STREAMOFF32 _IOW ('V', 19, s32)
-#define VIDIOC_G_INPUT32 _IOR ('V', 38, s32)
-#define VIDIOC_S_INPUT32 _IOWR('V', 39, s32)
-#define VIDIOC_G_OUTPUT32 _IOR ('V', 46, s32)
-#define VIDIOC_S_OUTPUT32 _IOWR('V', 47, s32)
-
unsigned int v4l2_compat_translate_cmd(unsigned int cmd)
{
switch (cmd) {
@@ -1544,13 +1536,6 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
case VIDIOC_DQEVENT32: ncmd = VIDIOC_DQEVENT; break;
case VIDIOC_DQEVENT32_TIME32: ncmd = VIDIOC_DQEVENT_TIME32; break;
#endif
- case VIDIOC_OVERLAY32: ncmd = VIDIOC_OVERLAY; break;
- case VIDIOC_STREAMON32: ncmd = VIDIOC_STREAMON; break;
- case VIDIOC_STREAMOFF32: ncmd = VIDIOC_STREAMOFF; break;
- case VIDIOC_G_INPUT32: ncmd = VIDIOC_G_INPUT; break;
- case VIDIOC_S_INPUT32: ncmd = VIDIOC_S_INPUT; break;
- case VIDIOC_G_OUTPUT32: ncmd = VIDIOC_G_OUTPUT; break;
- case VIDIOC_S_OUTPUT32: ncmd = VIDIOC_S_OUTPUT; break;
case VIDIOC_CREATE_BUFS32: ncmd = VIDIOC_CREATE_BUFS; break;
case VIDIOC_PREPARE_BUF32: ncmd = VIDIOC_PREPARE_BUF; break;
case VIDIOC_PREPARE_BUF32_TIME32: ncmd = VIDIOC_PREPARE_BUF_TIME32; break;
@@ -1565,24 +1550,6 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
* argument into it.
*/
switch (cmd) {
- case VIDIOC_OVERLAY32:
- case VIDIOC_STREAMON32:
- case VIDIOC_STREAMOFF32:
- case VIDIOC_S_INPUT32:
- case VIDIOC_S_OUTPUT32:
- err = alloc_userspace(sizeof(unsigned int), 0, &new_p64);
- if (!err && assign_in_user((unsigned int __user *)new_p64,
- (compat_uint_t __user *)p32))
- err = -EFAULT;
- compatible_arg = 0;
- break;
-
- case VIDIOC_G_INPUT32:
- case VIDIOC_G_OUTPUT32:
- err = alloc_userspace(sizeof(unsigned int), 0, &new_p64);
- compatible_arg = 0;
- break;
-
case VIDIOC_G_EDID32:
case VIDIOC_S_EDID32:
err = alloc_userspace(sizeof(struct v4l2_edid), 0, &new_p64);
@@ -1755,15 +1722,6 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
* the original 32 bits structure.
*/
switch (cmd) {
- case VIDIOC_S_INPUT32:
- case VIDIOC_S_OUTPUT32:
- case VIDIOC_G_INPUT32:
- case VIDIOC_G_OUTPUT32:
- if (assign_in_user((compat_uint_t __user *)p32,
- ((unsigned int __user *)new_p64)))
- err = -EFAULT;
- break;
-
case VIDIOC_G_FBUF32:
err = put_v4l2_framebuffer32(new_p64, p32);
break;
--
2.27.0