Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/pnp/pnpacpi/Kconfig b/drivers/pnp/pnpacpi/Kconfig
index b04767c..70f733f 100644
--- a/drivers/pnp/pnpacpi/Kconfig
+++ b/drivers/pnp/pnpacpi/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Plug and Play ACPI configuration
 #
diff --git a/drivers/pnp/pnpacpi/Makefile b/drivers/pnp/pnpacpi/Makefile
index 40c93da..fb1c715 100644
--- a/drivers/pnp/pnpacpi/Makefile
+++ b/drivers/pnp/pnpacpi/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Makefile for the kernel PNPACPI driver.
 #
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index 3a4c1aa..afaf30a 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -1,22 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * pnpacpi -- PnP ACPI driver
  *
  * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr>
  * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com>
- *
- * This program 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; either version 2, or (at your option) any
- * later version.
- *
- * 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
  */
 
 #include <linux/export.h>
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c
index 43d8ed5..da78dc7 100644
--- a/drivers/pnp/pnpacpi/rsparser.c
+++ b/drivers/pnp/pnpacpi/rsparser.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * pnpacpi -- PnP ACPI driver
  *
@@ -5,16 +6,6 @@
  * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com>
  * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
  *	Bjorn Helgaas <bjorn.helgaas@hp.com>
- *
- * This program 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; either version 2, or (at your option) any
- * later version.
- *
- * 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.
  */
 #include <linux/kernel.h>
 #include <linux/acpi.h>
@@ -215,7 +206,7 @@
 		if (i >= 0) {
 			flags = acpi_dev_irq_flags(gpio->triggering,
 						   gpio->polarity,
-						   gpio->sharable);
+						   gpio->shareable);
 		} else {
 			flags = IORESOURCE_DISABLED;
 		}
@@ -324,7 +315,7 @@
 		if (p->interrupts[i])
 			__set_bit(p->interrupts[i], map.bits);
 
-	flags = acpi_dev_irq_flags(p->triggering, p->polarity, p->sharable);
+	flags = acpi_dev_irq_flags(p->triggering, p->polarity, p->shareable);
 	pnp_register_irq_resource(dev, option_flags, &map, flags);
 }
 
@@ -348,7 +339,7 @@
 		}
 	}
 
-	flags = acpi_dev_irq_flags(p->triggering, p->polarity, p->sharable);
+	flags = acpi_dev_irq_flags(p->triggering, p->polarity, p->shareable);
 	pnp_register_irq_resource(dev, option_flags, &map, flags);
 }
 
@@ -681,7 +672,7 @@
 	decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
 	irq->triggering = triggering;
 	irq->polarity = polarity;
-	irq->sharable = shareable;
+	irq->shareable = shareable;
 	irq->interrupt_count = 1;
 	irq->interrupts[0] = p->start;
 
@@ -689,7 +680,7 @@
 		(int) p->start,
 		triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 		polarity == ACPI_ACTIVE_LOW ? "low" : "high",
-		irq->sharable == ACPI_SHARED ? "shared" : "exclusive",
+		irq->shareable == ACPI_SHARED ? "shared" : "exclusive",
 		irq->descriptor_length);
 }
 
@@ -711,14 +702,14 @@
 	extended_irq->producer_consumer = ACPI_CONSUMER;
 	extended_irq->triggering = triggering;
 	extended_irq->polarity = polarity;
-	extended_irq->sharable = shareable;
+	extended_irq->shareable = shareable;
 	extended_irq->interrupt_count = 1;
 	extended_irq->interrupts[0] = p->start;
 
 	pnp_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 		triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 		polarity == ACPI_ACTIVE_LOW ? "low" : "high",
-		extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
+		extended_irq->shareable == ACPI_SHARED ? "shared" : "exclusive");
 }
 
 static void pnpacpi_encode_dma(struct pnp_dev *dev,