linux-kernel - [RFC PATCH 23/43] ptrace, m68knommu: change signature of arch

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Date:	Fri, 27 Aug 2010 18:42:09 +0900
From:	Namhyung Kim <namhyung@...il.com>
To:	Roland McGrath <roland@...hat.com>,
	Oleg Nesterov <oleg@...hat.com>, Arnd Bergmann <arnd@...db.de>
Cc:	linux-kernel@...r.kernel.org, Greg Ungerer <gerg@...inux.org>
Subject: [RFC PATCH 23/43] ptrace, m68knommu: change signature of arch_ptrace()

change type of @addr and @data into unsigned long according to commit
f76671df26ef06321480e702770f88f61272be29 [PATCH 03/43]

Signed-off-by: Namhyung Kim <namhyung@...il.com>
Cc: Greg Ungerer <gerg@...inux.org>
---
 arch/m68knommu/kernel/ptrace.c |   15 +++++++--------
 1 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/arch/m68knommu/kernel/ptrace.c b/arch/m68knommu/kernel/ptrace.c
index f6be124..835a3ed 100644
--- a/arch/m68knommu/kernel/ptrace.c
+++ b/arch/m68knommu/kernel/ptrace.c
@@ -111,7 +111,8 @@ void ptrace_disable(struct task_struct *child)
 	user_disable_single_step(child);
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+		 unsigned long addr, unsigned long data)
 {
 	int ret;
 
@@ -121,8 +122,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 			unsigned long tmp;
 			
 			ret = -EIO;
-			if ((addr & 3) || addr < 0 ||
-			    addr > sizeof(struct user) - 3)
+			if ((addr & 3) || addr > sizeof(struct user) - 3)
 				break;
 			
 			tmp = 0;  /* Default return condition */
@@ -156,8 +156,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 
 		case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
 			ret = -EIO;
-			if ((addr & 3) || addr < 0 ||
-			    addr > sizeof(struct user) - 3)
+			if ((addr & 3) || addr > sizeof(struct user) - 3)
 				break;
 
 			addr = addr >> 2; /* temporary hack. */
@@ -180,7 +179,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 				 * into internal fpu reg representation
 				 */
 				if (FPU_IS_EMU && (addr < 45) && !(addr % 3)) {
-					data = (unsigned long)data << 15;
+					data <<= 15;
 					data = (data & 0xffff0000) |
 					       ((data & 0x0000ffff) >> 1);
 				}
@@ -201,7 +200,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 				ret = -EFAULT;
 				break;
 			    }
-			    data += sizeof(long);
+			    data += sizeof(unsigned long);
 			}
 			ret = 0;
 			break;
@@ -221,7 +220,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 				tmp |= get_reg(child, PT_SR) & ~(SR_MASK << 16);
 			    }
 			    put_reg(child, i, tmp);
-			    data += sizeof(long);
+			    data += sizeof(unsigned long);
 			}
 			ret = 0;
 			break;
-- 
1.7.2.2

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