#define USE_PT_METHOD2 (card->is_audigy)
#define USE_PT_METHOD1 !USE_PT_METHOD2
-ssize_t emu10k1_pt_write(struct file *file, const char *buf, size_t count);
+ssize_t emu10k1_pt_write(struct file *file, const char __user *buf, size_t count);
int emu10k1_pt_setup(struct emu10k1_wavedevice *wave_dev);
void emu10k1_pt_stop(struct emu10k1_card *card);