smb3: fix unneeded error message on change notify

We should not be logging a warning repeatedly on change notify.

CC: Stable <stable@vger.kernel.org> # v5.6+
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>

diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
index 6a39451..1579928 100644 (file)
--- a/fs/cifs/smb2misc.c
+++ b/fs/cifs/smb2misc.c
@@ -354,9 +354,13 @@ smb2_get_data_area_len(int *off, int *len, struct smb2_sync_hdr *shdr)
                  ((struct smb2_ioctl_rsp *)shdr)->OutputCount);
                break;
        case SMB2_CHANGE_NOTIFY:
+               *off = le16_to_cpu(
+                 ((struct smb2_change_notify_rsp *)shdr)->OutputBufferOffset);
+               *len = le32_to_cpu(
+                 ((struct smb2_change_notify_rsp *)shdr)->OutputBufferLength);
+               break;
        default:
-               /* BB FIXME for unimplemented cases above */
-               cifs_dbg(VFS, "no length check for command\n");
+               cifs_dbg(VFS, "no length check for command %d\n", le16_to_cpu(shdr->Command));
                break;
        }