From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 25 May 2017 12:47:00 -0400
Subject: switch compat_drm_setsareactx() to drm_ioctl_kernel()
Git-commit: 7900c6007a927da7944dd721dcdf69092829d4df
Patch-mainline: v4.13-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/drm_ioc32.c | 17 ++++++-----------
1 file changed, 6 insertions(+), 11 deletions(-)
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -502,21 +502,16 @@ static int compat_drm_setsareactx(struct
unsigned long arg)
{
drm_ctx_priv_map32_t req32;
- struct drm_ctx_priv_map __user *request;
+ struct drm_ctx_priv_map request;
drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
- request = compat_alloc_user_space(sizeof(*request));
- if (!request)
- return -EFAULT;
- if (__put_user(req32.ctx_id, &request->ctx_id)
- || __put_user((void *)(unsigned long)req32.handle,
- &request->handle))
- return -EFAULT;
-
- return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
+ request.ctx_id = req32.ctx_id;
+ request.handle = compat_ptr(req32.handle);
+ return drm_ioctl_kernel(file, drm_legacy_setsareactx, &request,
+ DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
}
static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
@@ -1011,7 +1006,7 @@ static struct {
[DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)].fn = compat_drm_mapbufs,
DRM_IOCTL32_DEF(DRM_IOCTL_FREE_BUFS, compat_drm_freebufs),
[DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)].fn = compat_drm_rmmap,
- [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)].fn = compat_drm_setsareactx,
+ DRM_IOCTL32_DEF(DRM_IOCTL_SET_SAREA_CTX, compat_drm_setsareactx),
[DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)].fn = compat_drm_getsareactx,
[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)].fn = compat_drm_resctx,
[DRM_IOCTL_NR(DRM_IOCTL_DMA32)].fn = compat_drm_dma,