disable pwm7

hc

2024-05-10 23fa18eaa71266feff7ba8d83022d9e1cc83c65a

 kernel/arch/powerpc/oprofile/backtrace.c
..
..
@@ -1,18 +1,15 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /**
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  * Copyright (C) 2005 Brian Rogan <bcr6@cornell.edu>, IBM
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  *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation; either version
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- * 2 of the License, or (at your option) any later version.
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 **/
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-#include <linux/compat_time.h>
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+#include <linux/time.h>
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 #include <linux/oprofile.h>
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 #include <linux/sched.h>
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 #include <asm/processor.h>
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 #include <linux/uaccess.h>
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-#include <asm/compat.h>
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+#include <linux/compat.h>
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 #include <asm/oprofile_impl.h>
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14
 
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 #define STACK_SP(STACK)		*(STACK)
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@@ -31,15 +28,13 @@
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 	unsigned int stack_frame[2];
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 	void __user *p = compat_ptr(sp);
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-	if (!access_ok(VERIFY_READ, p, sizeof(stack_frame)))
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-		return 0;
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-
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 	/*
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 	 * The most likely reason for this is that we returned -EFAULT,
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 	 * which means that we've done all that we can do from
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 	 * interrupt context.
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 	 */
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-	if (__copy_from_user_inatomic(stack_frame, p, sizeof(stack_frame)))
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+	if (copy_from_user_nofault(stack_frame, (void __user *)p,
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+			sizeof(stack_frame)))
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 		return 0;
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39
 
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 	if (!is_first)
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@@ -57,11 +52,8 @@
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 {
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 	unsigned long stack_frame[3];
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-	if (!access_ok(VERIFY_READ, (void __user *)sp, sizeof(stack_frame)))
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-		return 0;
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-
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-	if (__copy_from_user_inatomic(stack_frame, (void __user *)sp,
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-					sizeof(stack_frame)))
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+	if (copy_from_user_nofault(stack_frame, (void __user *)sp,
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+			sizeof(stack_frame)))
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 		return 0;
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 	if (!is_first)
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@@ -106,7 +98,6 @@
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 			first_frame = 0;
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 		}
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 	} else {
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-		pagefault_disable();
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 #ifdef CONFIG_PPC64
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 		if (!is_32bit_task()) {
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 			while (depth--) {
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@@ -115,7 +106,6 @@
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 					break;
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 				first_frame = 0;
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 			}
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-			pagefault_enable();
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 			return;
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 		}
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 #endif
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@@ -126,6 +116,5 @@
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 				break;
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 			first_frame = 0;
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 		}
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-		pagefault_enable();
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 	}
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 }