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hfi1_file_ioctl(): execute HFI1_IOCTL_TID_INVAL_READ locally

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This commit is contained in:
Balazs Gerofi
2017-12-05 17:13:33 +09:00
parent fcc8310454
commit b08da83a51
1 changed files with 12 additions and 3 deletions
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15
kernel/file_ops.c
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@@ -526,9 +526,18 @@ long hfi1_file_ioctl(void *private_data, unsigned int cmd,
case HFI1_IOCTL_TID_INVAL_READ: case HFI1_IOCTL_TID_INVAL_READ:
dkprintf("%s: HFI1_IOCTL_TID_INVAL_READ \n", __FUNCTION__); dkprintf("%s: HFI1_IOCTL_TID_INVAL_READ \n", __FUNCTION__);
/* This function is only invovled with the tid mmu caching. if (copy_from_user(&tinfo,
* It is a no-op for us. */ (struct hfi11_tid_info __user *)arg,
ret = 0; sizeof(tinfo)))
return -EFAULT;
ret = hfi1_user_exp_rcv_invalid(fd, &tinfo);
if (ret)
break;
addr = arg + offsetof(struct hfi1_tid_info, tidcnt);
if (copy_to_user((void __user *)addr, &tinfo.tidcnt,
sizeof(tinfo.tidcnt)))
ret = -EFAULT;
break; break;
case HFI1_IOCTL_RECV_CTRL: case HFI1_IOCTL_RECV_CTRL: