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Bluetooth: Use memdup_user in le_auto_conn_write()

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This patch does a small code simplification replacing the tipical
kmalloc-copy_from_user sequence by memdup_user() helper.

Cc: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Andre Guedes 2014-03-24 16:08:48 -03:00 committed by Marcel Holtmann
parent 4af605d8c4
commit 4408dd15d9
1 changed files with 3 additions and 8 deletions
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11
net/bluetooth/hci_core.c
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@ -955,14 +955,9 @@ static ssize_t le_auto_conn_write(struct file *file, const char __user *data,
if (count < 3)
return -EINVAL;
buf = kzalloc(count, GFP_KERNEL);
if (!buf)
return -ENOMEM;
if (copy_from_user(buf, data, count)) {
err = -EFAULT;
goto done;
}
buf = memdup_user(data, count);
if (IS_ERR(buf))
return PTR_ERR(buf);
if (memcmp(buf, "add", 3) == 0) {
n = sscanf(&buf[4], "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx %hhu %hhu",