Merge branch 'topic/memdup_user' into for-linus

* topic/memdup_user:
  ALSA: sound/pci: use memdup_user()
  ALSA: sound/usb: use memdup_user()
  ALSA: sound/isa: use memdup_user()
  ALSA: sound/core: use memdup_user()

1 files changed, 5 insertions, 6 deletions

diff --git a/sound/isa/wavefront/wavefront_synth.c b/sound/isa/wavefront/wavefront_synth.c
index beb312cca75b..5d4ff48c4345 100644
--- a/sound/isa/wavefront/wavefront_synth.c
+++ b/sound/isa/wavefront/wavefront_synth.c
@@ -1664,12 +1664,11 @@ snd_wavefront_synth_ioctl (struct snd_hwdep *hw, struct file *file,
                 break;
 
         case WFCTL_WFCMD:
-                wc = kmalloc(sizeof(*wc), GFP_KERNEL);
-                if (! wc)
-                        return -ENOMEM;
-                if (copy_from_user (wc, argp, sizeof (*wc)))
-                        err = -EFAULT;
-                else if (wavefront_synth_control (acard, wc) < 0)
+                wc = memdup_user(argp, sizeof(*wc));
+                if (IS_ERR(wc))
+                        return PTR_ERR(wc);
+
+                if (wavefront_synth_control (acard, wc) < 0)
                         err = -EIO;
                 else if (copy_to_user (argp, wc, sizeof (*wc)))
                         err = -EFAULT;