ALSA: echoaudio: Add SPDX ids to some files

Add SPDX-License-Identifier lines to some files in the
sound subsystem - mostly in the echoaudio drivers.
Remove boilerplate GPL headers.

Signed-off-by: Tim Bird <tim.bird@sony.com>
Link: https://patch.msgid.link/20260212234928.3739815-1-tim.bird@sony.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

23 files changed, 23 insertions, 339 deletions

diff --git a/sound/oss/dmasound/dmasound_core.c b/sound/oss/dmasound/dmasound_core.c
index dea2d9b18fc9..a718b75bb6a0 100644
--- a/sound/oss/dmasound/dmasound_core.c
+++ b/sound/oss/dmasound/dmasound_core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/sound/oss/dmasound/dmasound_core.c
  *
@@ -21,10 +22,6 @@
  *  /dev/sndstat is based on code by Hannu Savolainen, the author of the
  *  VoxWare family of drivers.
  *
- *  This file is subject to the terms and conditions of the GNU General Public
- *  License.  See the file COPYING in the main directory of this archive
- *  for more details.
- *
  *  History:
  *
  *	1995/8/25	First release
diff --git a/sound/pci/echoaudio/darla20_dsp.c b/sound/pci/echoaudio/darla20_dsp.c
index 0356efad7528..5a41644b16b0 100644
--- a/sound/pci/echoaudio/darla20_dsp.c
+++ b/sound/pci/echoaudio/darla20_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /***************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/darla24_dsp.c b/sound/pci/echoaudio/darla24_dsp.c
index b96300772aee..5dc0efaca425 100644
--- a/sound/pci/echoaudio/darla24_dsp.c
+++ b/sound/pci/echoaudio/darla24_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /***************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/echo3g_dsp.c b/sound/pci/echoaudio/echo3g_dsp.c
index 9e1f2cad0909..38084c2c3f73 100644
--- a/sound/pci/echoaudio/echo3g_dsp.c
+++ b/sound/pci/echoaudio/echo3g_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/echoaudio.h b/sound/pci/echoaudio/echoaudio.h
index 511f2fcc0fb9..7a5744bf3155 100644
--- a/sound/pci/echoaudio/echoaudio.h
+++ b/sound/pci/echoaudio/echoaudio.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
  ****************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/echoaudio_3g.c b/sound/pci/echoaudio/echoaudio_3g.c
index c9ee98ea3c71..4b3c6a8bc66a 100644
--- a/sound/pci/echoaudio/echoaudio_3g.c
+++ b/sound/pci/echoaudio/echoaudio_3g.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/echoaudio_dsp.c b/sound/pci/echoaudio/echoaudio_dsp.c
index 6e872103305b..4dd494508c9b 100644
--- a/sound/pci/echoaudio/echoaudio_dsp.c
+++ b/sound/pci/echoaudio/echoaudio_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/echoaudio_dsp.h b/sound/pci/echoaudio/echoaudio_dsp.h
index aa9129519795..4f73bc037f59 100644
--- a/sound/pci/echoaudio/echoaudio_dsp.h
+++ b/sound/pci/echoaudio/echoaudio_dsp.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/echoaudio_gml.c b/sound/pci/echoaudio/echoaudio_gml.c
index 248983fa2959..682a8cc63f0b 100644
--- a/sound/pci/echoaudio/echoaudio_gml.c
+++ b/sound/pci/echoaudio/echoaudio_gml.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/gina20_dsp.c b/sound/pci/echoaudio/gina20_dsp.c
index c93939850357..ba4c398f8611 100644
--- a/sound/pci/echoaudio/gina20_dsp.c
+++ b/sound/pci/echoaudio/gina20_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/gina24_dsp.c b/sound/pci/echoaudio/gina24_dsp.c
index 78fbac9f3eac..fa1d8c06f059 100644
--- a/sound/pci/echoaudio/gina24_dsp.c
+++ b/sound/pci/echoaudio/gina24_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/indigo_dsp.c b/sound/pci/echoaudio/indigo_dsp.c
index 16eb082df56a..c53643279cdd 100644
--- a/sound/pci/echoaudio/indigo_dsp.c
+++ b/sound/pci/echoaudio/indigo_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/indigo_express_dsp.c b/sound/pci/echoaudio/indigo_express_dsp.c
index ceda2d7046ac..7a032b702498 100644
--- a/sound/pci/echoaudio/indigo_express_dsp.c
+++ b/sound/pci/echoaudio/indigo_express_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
 /************************************************************************
 
 This file is part of Echo Digital Audio's generic driver library.
@@ -5,22 +6,6 @@ Copyright Echo Digital Audio Corporation (c) 1998 - 2005
 All rights reserved
 www.echoaudio.com
 
-This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Lesser General Public
-License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
-
-This library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public
-License along with this library; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-*************************************************************************
-
  Translation from C++ and adaptation for use in ALSA-Driver
  were made by Giuliano Pochini <pochini@shiny.it>
 
diff --git a/sound/pci/echoaudio/indigodj_dsp.c b/sound/pci/echoaudio/indigodj_dsp.c
index 17a1d888d0b9..0f8299ab123f 100644
--- a/sound/pci/echoaudio/indigodj_dsp.c
+++ b/sound/pci/echoaudio/indigodj_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/indigodjx_dsp.c b/sound/pci/echoaudio/indigodjx_dsp.c
index 5fbd4a3a3083..677cd8ed7cc4 100644
--- a/sound/pci/echoaudio/indigodjx_dsp.c
+++ b/sound/pci/echoaudio/indigodjx_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
 /************************************************************************
 
 This file is part of Echo Digital Audio's generic driver library.
@@ -5,22 +6,6 @@ Copyright Echo Digital Audio Corporation (c) 1998 - 2005
 All rights reserved
 www.echoaudio.com
 
-This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Lesser General Public
-License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
-
-This library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public
-License along with this library; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-*************************************************************************
-
  Translation from C++ and adaptation for use in ALSA-Driver
  were made by Giuliano Pochini <pochini@shiny.it>
 
diff --git a/sound/pci/echoaudio/indigoio_dsp.c b/sound/pci/echoaudio/indigoio_dsp.c
index 791787aa0744..55d6431c8291 100644
--- a/sound/pci/echoaudio/indigoio_dsp.c
+++ b/sound/pci/echoaudio/indigoio_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/indigoiox_dsp.c b/sound/pci/echoaudio/indigoiox_dsp.c
index 1ae394ea7c7d..48958e51d414 100644
--- a/sound/pci/echoaudio/indigoiox_dsp.c
+++ b/sound/pci/echoaudio/indigoiox_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
 /************************************************************************
 
 This file is part of Echo Digital Audio's generic driver library.
@@ -5,22 +6,6 @@ Copyright Echo Digital Audio Corporation (c) 1998 - 2005
 All rights reserved
 www.echoaudio.com
 
-This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Lesser General Public
-License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
-
-This library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public
-License along with this library; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-*************************************************************************
-
  Translation from C++ and adaptation for use in ALSA-Driver
  were made by Giuliano Pochini <pochini@shiny.it>
 
diff --git a/sound/pci/echoaudio/layla20_dsp.c b/sound/pci/echoaudio/layla20_dsp.c
index 5fb5c4a4598b..e0349a3c20e4 100644
--- a/sound/pci/echoaudio/layla20_dsp.c
+++ b/sound/pci/echoaudio/layla20_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/layla24_dsp.c b/sound/pci/echoaudio/layla24_dsp.c
index decfccb1e803..e7b8f5fe7753 100644
--- a/sound/pci/echoaudio/layla24_dsp.c
+++ b/sound/pci/echoaudio/layla24_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,21 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/mia_dsp.c b/sound/pci/echoaudio/mia_dsp.c
index 8a4dffc68889..f040a09f3191 100644
--- a/sound/pci/echoaudio/mia_dsp.c
+++ b/sound/pci/echoaudio/mia_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/midi.c b/sound/pci/echoaudio/midi.c
index dd5212644844..4d66163a6bb0 100644
--- a/sound/pci/echoaudio/midi.c
+++ b/sound/pci/echoaudio/midi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/echoaudio/mona_dsp.c b/sound/pci/echoaudio/mona_dsp.c
index 9bb6a174745c..6089152eb246 100644
--- a/sound/pci/echoaudio/mona_dsp.c
+++ b/sound/pci/echoaudio/mona_dsp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /****************************************************************************
 
    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
@@ -5,22 +6,6 @@
    www.echoaudio.com
 
    This file is part of Echo Digital Audio's generic driver library.
-
-   Echo Digital Audio's generic driver library is free software;
-   you can redistribute it and/or modify it under the terms of
-   the GNU General Public License as published by the Free Software
-   Foundation.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA  02111-1307, USA.
-
    *************************************************************************
 
  Translation from C++ and adaptation for use in ALSA-Driver
diff --git a/sound/pci/ens1371.c b/sound/pci/ens1371.c
index ca0da0ab40b6..694978c4b22d 100644
--- a/sound/pci/ens1371.c
+++ b/sound/pci/ens1371.c
@@ -1,2 +1,3 @@
+// SPDX-License-Identifier: GPL-2.0
 #define CHIP1371
 #include "ens1370.c"