parisc/power: Trivial whitespace cleanups and license update

Signed-off-by: Helge Deller <deller@gmx.de>

Author: hdeller

drivers/parisc/power.c

@@ -1,38 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
- * linux/drivers/parisc/power.c
- * HP PARISC soft power switch support driver
- *
- * Copyright (c) 2001-2007 Helge Deller <deller@gmx.de>
- * All rights reserved.
- *
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions, and the following disclaimer,
- *    without modification.
- * 2. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL").
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * HP PARISC soft power switch driver
  *
+ * Copyright (c) 2001-2023 Helge Deller <deller@gmx.de>
  *
  *  HINT:
  *  Support of the soft power switch button may be enabled or disabled at
  *  runtime through the "/proc/sys/kernel/power" procfs entry.
- */ 
+ */
 
 #include <linux/module.h>
 #include <linux/init.h>
@@ -62,12 +37,12 @@
 
 #define MFCPU_X(rDiagReg, t_ch, t_th, code) \
 	(DIAG_CODE(code) + ((rDiagReg)<<21) + ((t_ch)<<16) + ((t_th)<<0) )
-	
+
 #define MTCPU(dr, gr)		MFCPU_X(dr, gr,  0, 0x12)       /* move value of gr to dr[dr] */
 #define MFCPU_C(dr, gr)		MFCPU_X(dr, gr,  0, 0x30)	/* for dr0 and dr8 only ! */
 #define MFCPU_T(dr, gr)		MFCPU_X(dr,  0, gr, 0xa0)	/* all dr except dr0 and dr8 */
-	
-#define __getDIAG(dr) ( { 			\
+
+#define __getDIAG(dr) ( {			\
         register unsigned long __res asm("r28");\
 	 __asm__ __volatile__ (			\
 		".word %1" : "=&r" (__res) : "i" (MFCPU_T(dr,28) ) \
@@ -85,7 +60,7 @@ static void process_shutdown(void)
 		printk(KERN_ALERT KTHREAD_NAME ": Shutdown requested...\n");
 
 	shutdown_timer++;
-	
+
 	/* wait until the button was pressed for 1 second */
 	if (shutdown_timer == (POWERSWITCH_DOWN_SEC*POWERSWITCH_POLL_PER_SEC)) {
 		static const char msg[] = "Shutting down...";
@@ -135,7 +110,7 @@ static int kpowerswd(void *param)
 			button_not_pressed = (gsc_readl(soft_power_reg) & 0x1);
 		} else {
 			/*
-			 * On gecko style machines (e.g. 712/xx and 715/xx) 
+			 * On gecko style machines (e.g. 712/xx and 715/xx)
 			 * the power switch status is stored in Bit 0 ("the highest bit")
 			 * of CPU diagnose register 25.
 			 * Warning: Some machines never reset the DIAG flag, even if
@@ -161,7 +136,7 @@ static int kpowerswd(void *param)
 
 
 /*
- * powerfail interruption handler (irq IRQ_FROM_REGION(CPU_IRQ_REGION)+2) 
+ * powerfail interruption handler (irq IRQ_FROM_REGION(CPU_IRQ_REGION)+2)
  */
 #if 0
 static void powerfail_interrupt(int code, void *x)
@@ -222,14 +197,14 @@ static int __init power_init(void)
 		ret = pdc_soft_power_button(1);
 	if (ret != PDC_OK)
 		soft_power_reg = -1UL;
-	
+
 	switch (soft_power_reg) {
 	case 0:		printk(KERN_INFO DRIVER_NAME ": Gecko-style soft power switch enabled.\n");
 			break;
-			
+
 	case -1UL:	printk(KERN_INFO DRIVER_NAME ": Soft power switch support not available.\n");
 			return -ENODEV;
-	
+
 	default:	printk(KERN_INFO DRIVER_NAME ": Soft power switch at 0x%08lx enabled.\n",
 				soft_power_reg);
 	}