ALSA: sound/isa: use memdup_user()
Remove open-coded memdup_user().
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/isa/wavefront/wavefront_fx.c b/sound/isa/wavefront/wavefront_fx.c
index dfc449a..5e6870b 100644
--- a/sound/isa/wavefront/wavefront_fx.c
+++ b/sound/isa/wavefront/wavefront_fx.c
@@ -210,15 +210,11 @@
"> 512 bytes to FX\n");
return -EIO;
}
- page_data = kmalloc(r.data[2] * sizeof(short), GFP_KERNEL);
- if (!page_data)
- return -ENOMEM;
- if (copy_from_user (page_data,
- (unsigned char __user *) r.data[3],
- r.data[2] * sizeof(short))) {
- kfree(page_data);
- return -EFAULT;
- }
+ page_data = memdup_user((unsigned char __user *)
+ r.data[3],
+ r.data[2] * sizeof(short));
+ if (IS_ERR(page_data))
+ return PTR_ERR(page_data);
pd = page_data;
}
