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switch compat_drm_wait_vblank() to drm_ioctl_kernel() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-05-25 13:33:11 -04:00
parent 1a36bf1da6
commit d5288c88c6
1 changed files with 10 additions and 16 deletions
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26
drivers/gpu/drm/drm_ioc32.c
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@ -837,29 +837,23 @@ static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
{
drm_wait_vblank32_t __user *argp = (void __user *)arg;
drm_wait_vblank32_t req32;
union drm_wait_vblank __user *request;
union drm_wait_vblank req;
int err;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
request = compat_alloc_user_space(sizeof(*request));
if (!request
|| __put_user(req32.request.type, &request->request.type)
|| __put_user(req32.request.sequence, &request->request.sequence)
|| __put_user(req32.request.signal, &request->request.signal))
return -EFAULT;
err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
req.request.type = req32.request.type;
req.request.sequence = req32.request.sequence;
req.request.signal = req32.request.signal;
err = drm_ioctl_kernel(file, drm_wait_vblank, &req, DRM_UNLOCKED);
if (err)
return err;
if (__get_user(req32.reply.type, &request->reply.type)
|| __get_user(req32.reply.sequence, &request->reply.sequence)
|| __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
|| __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
return -EFAULT;
req32.reply.type = req.reply.type;
req32.reply.sequence = req.reply.sequence;
req32.reply.tval_sec = req.reply.tval_sec;
req32.reply.tval_usec = req.reply.tval_usec;
if (copy_to_user(argp, &req32, sizeof(req32)))
return -EFAULT;
@ -960,7 +954,7 @@ static struct {
#if defined(CONFIG_X86) || defined(CONFIG_IA64)
DRM_IOCTL32_DEF(DRM_IOCTL_UPDATE_DRAW, compat_drm_update_draw),
#endif
[DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)].fn = compat_drm_wait_vblank,
DRM_IOCTL32_DEF(DRM_IOCTL_WAIT_VBLANK, compat_drm_wait_vblank),
#if defined(CONFIG_X86) || defined(CONFIG_IA64)
[DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)].fn = compat_drm_mode_addfb2,
#endif