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>

2 files changed, 10 insertions, 15 deletions

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 8ab28368bb9..4375ffb5459 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/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
diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd_64.c b/arch/x86/kernel/cpu/mcheck/mce_amd_64.c
index 083f270251f..0c563432e25 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_amd_64.c
+++ b/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 {