ALSA: sound/usb: use memdup_user()
[linux-2.6.git] / sound / usb / usx2y / usX2Yhwdep.c
index 4af8740..f3d8f71 100644 (file)
@@ -203,13 +203,12 @@ static int snd_usX2Y_hwdep_dsp_load(struct snd_hwdep *hw,
 
        if (access_ok(VERIFY_READ, dsp->image, dsp->length)) {
                struct usb_device* dev = priv->chip.dev;
-               char *buf = kmalloc(dsp->length, GFP_KERNEL);
-               if (!buf)
-                       return -ENOMEM;
-               if (copy_from_user(buf, dsp->image, dsp->length)) {
-                       kfree(buf);
-                       return -EFAULT;
-               }
+               char *buf;
+
+               buf = memdup_user(dsp->image, dsp->length);
+               if (IS_ERR(buf))
+                       return PTR_ERR(buf);
+
                err = usb_set_interface(dev, 0, 1);
                if (err)
                        snd_printk(KERN_ERR "usb_set_interface error \n");