Bluetooth: btmrvl: Re-use kstrtol_from_user()

Re-use kstrtol_from_user() instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/drivers/bluetooth/btmrvl_debugfs.c b/drivers/bluetooth/btmrvl_debugfs.c
index 023d35e3c7a75b573a52d99cbda5bd98c64e017f..c4867576be00899c83aae0cb90e852480c9ccb89 100644 (file)
--- a/drivers/bluetooth/btmrvl_debugfs.c
+++ b/drivers/bluetooth/btmrvl_debugfs.c
@@ -35,15 +35,9 @@ static ssize_t btmrvl_hscfgcmd_write(struct file *file,
                        const char __user *ubuf, size_t count, loff_t *ppos)
 {
        struct btmrvl_private *priv = file->private_data;
-       char buf[16];
        long result, ret;
 
-       memset(buf, 0, sizeof(buf));
-
-       if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
-               return -EFAULT;
-
-       ret = kstrtol(buf, 10, &result);
+       ret = kstrtol_from_user(ubuf, count, 10, &result);
        if (ret)
                return ret;
 
@@ -81,15 +75,9 @@ static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
                                                size_t count, loff_t *ppos)
 {
        struct btmrvl_private *priv = file->private_data;
-       char buf[16];
        long result, ret;
 
-       memset(buf, 0, sizeof(buf));
-
-       if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
-               return -EFAULT;
-
-       ret = kstrtol(buf, 10, &result);
+       ret = kstrtol_from_user(ubuf, count, 10, &result);
        if (ret)
                return ret;
 
@@ -127,15 +115,9 @@ static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
                                                size_t count, loff_t *ppos)
 {
        struct btmrvl_private *priv = file->private_data;
-       char buf[16];
        long result, ret;
 
-       memset(buf, 0, sizeof(buf));
-
-       if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
-               return -EFAULT;
-
-       ret = kstrtol(buf, 10, &result);
+       ret = kstrtol_from_user(ubuf, count, 10, &result);
        if (ret)
                return ret;