diff options
Diffstat (limited to 'drivers/video/tegra/nvmap/nvmap_ioctl.c')
-rw-r--r-- | drivers/video/tegra/nvmap/nvmap_ioctl.c | 51 |
1 files changed, 31 insertions, 20 deletions
diff --git a/drivers/video/tegra/nvmap/nvmap_ioctl.c b/drivers/video/tegra/nvmap/nvmap_ioctl.c index a52dbab922b4..3f7573a9ffcc 100644 --- a/drivers/video/tegra/nvmap/nvmap_ioctl.c +++ b/drivers/video/tegra/nvmap/nvmap_ioctl.c @@ -227,6 +227,33 @@ const struct file_operations nvmap_fd_fops = { .mmap = nvmap_share_mmap, }; +static int nvmap_install_fd(struct nvmap_client *client, + struct nvmap_handle *handle, int fd, void __user *arg, + void *op, size_t op_size, bool free) +{ + int err = 0; + + if (IS_ERR_VALUE(fd)) { + err = fd; + goto fd_fail; + } + + if (copy_to_user(arg, op, op_size)) { + err = -EFAULT; + goto copy_fail; + } + + fd_install(fd, handle->dmabuf->file); + return err; + +copy_fail: + put_unused_fd(fd); +fd_fail: + if (free) + nvmap_free_handle(client, handle); + return err; +} + int nvmap_ioctl_getfd(struct file *filp, void __user *arg) { struct nvmap_handle *handle; @@ -242,14 +269,9 @@ int nvmap_ioctl_getfd(struct file *filp, void __user *arg) op.fd = nvmap_get_dmabuf_fd(client, handle); nvmap_handle_put(handle); - if (op.fd < 0) - return op.fd; - if (copy_to_user(arg, &op, sizeof(op))) { - sys_close(op.fd); - return -EFAULT; - } - return 0; + return nvmap_install_fd(client, handle, + op.fd, arg, &op, sizeof(op), 0); } int nvmap_ioctl_alloc(struct file *filp, void __user *arg) @@ -315,7 +337,6 @@ int nvmap_ioctl_create(struct file *filp, unsigned int cmd, void __user *arg) struct nvmap_create_handle op; struct nvmap_handle_ref *ref = NULL; struct nvmap_client *client = filp->private_data; - int err = 0; int fd = 0; if (copy_from_user(&op, arg, sizeof(op))) @@ -338,19 +359,9 @@ int nvmap_ioctl_create(struct file *filp, unsigned int cmd, void __user *arg) return PTR_ERR(ref); fd = nvmap_get_dmabuf_fd(client, ref->handle); - if (fd < 0) - err = fd; - op.handle = fd; - - if (copy_to_user(arg, &op, sizeof(op))) { - err = -EFAULT; - nvmap_free_handle(client, __nvmap_ref_to_id(ref)); - } - - if (err && fd > 0) - sys_close(fd); - return err; + return nvmap_install_fd(client, ref->handle, fd, + arg, &op, sizeof(op), 1); } int nvmap_map_into_caller_ptr(struct file *filp, void __user *arg, bool is32) |