x86, mce: use strict_strtoull

Use strict_strtoull instead of simple_strtoull.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

arch/x86/kernel/cpu/mcheck/mce.c

@@ -1059,18 +1059,17 @@ static ssize_t show_bank(struct sys_device *s, struct sysdev_attribute *attr,
 }
 
 static ssize_t set_bank(struct sys_device *s, struct sysdev_attribute *attr,
-			const char *buf, size_t siz)
+			const char *buf, size_t size)
 {
-	char *end;
-	u64 new = simple_strtoull(buf, &end, 0);
+	u64 new;
 
-	if (end == buf)
+	if (strict_strtoull(buf, 0, &new) < 0)
 		return -EINVAL;
 
 	bank[attr - bank_attrs] = new;
 	mce_restart();
 
-	return end-buf;
+	return size;
 }
 
 static ssize_t

arch/x86/kernel/cpu/mcheck/mce_amd_64.c

@@ -269,14 +269,12 @@ SHOW_FIELDS(interrupt_enable)
 SHOW_FIELDS(threshold_limit)
 
 static ssize_t
-store_interrupt_enable(struct threshold_block *b, const char *buf, size_t count)
+store_interrupt_enable(struct threshold_block *b, const char *buf, size_t size)
 {
 	struct thresh_restart tr;
 	unsigned long new;
-	char *end;
 
-	new = simple_strtoul(buf, &end, 0);
-	if (end == buf)
+	if (strict_strtoul(buf, 0, &new) < 0)
 		return -EINVAL;
 
 	b->interrupt_enable = !!new;
@@ -287,18 +285,16 @@ store_interrupt_enable(struct threshold_block *b, const char *buf, size_t count)
 
 	smp_call_function_single(b->cpu, threshold_restart_bank, &tr, 1);
 
-	return end - buf;
+	return size;
 }
 
 static ssize_t
-store_threshold_limit(struct threshold_block *b, const char *buf, size_t count)
+store_threshold_limit(struct threshold_block *b, const char *buf, size_t size)
 {
 	struct thresh_restart tr;
 	unsigned long new;
-	char *end;
 
-	new = simple_strtoul(buf, &end, 0);
-	if (end == buf)
+	if (strict_strtoul(buf, 0, &new) < 0)
 		return -EINVAL;
 
 	if (new > THRESHOLD_MAX)
@@ -313,7 +309,7 @@ store_threshold_limit(struct threshold_block *b, const char *buf, size_t count)
 
 	smp_call_function_single(b->cpu, threshold_restart_bank, &tr, 1);
 
-	return end - buf;
+	return size;
 }
 
 struct threshold_block_cross_cpu {