From 3b35de4126f03d8df089c5fc908c40bb91485f6c Mon Sep 17 00:00:00 2001
From: Markus Grabner <grabner@icg.tugraz.at>
Date: Mon, 5 Dec 2011 23:51:52 +0100
Subject: [PATCH] staging/line6: Remove obsolete code

This patch removes experimental code which is no longer used.

Signed-off-by: Markus Grabner <grabner@icg.tugraz.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/staging/line6/capture.c  |  4 ----
 drivers/staging/line6/pcm.c      | 17 -----------------
 drivers/staging/line6/pcm.h      |  3 ---
 drivers/staging/line6/playback.c |  8 --------
 4 files changed, 32 deletions(-)

diff --git a/drivers/staging/line6/capture.c b/drivers/staging/line6/capture.c
index d9da7ed..ba441ed 100644
--- a/drivers/staging/line6/capture.c
+++ b/drivers/staging/line6/capture.c
@@ -244,11 +244,7 @@ static void audio_in_callback(struct urb *urb)
 		length += fsize;
 
 		/* the following assumes LINE6_ISO_PACKETS == 1: */
-#if LINE6_BACKUP_MONITOR_SIGNAL
-		memcpy(line6pcm->prev_fbuf, fbuf, fsize);
-#else
 		line6pcm->prev_fbuf = fbuf;
-#endif
 		line6pcm->prev_fsize = fsize;
 
 #ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE
diff --git a/drivers/staging/line6/pcm.c b/drivers/staging/line6/pcm.c
index 2e4e164..a70c087 100644
--- a/drivers/staging/line6/pcm.c
+++ b/drivers/staging/line6/pcm.c
@@ -93,21 +93,7 @@ int line6_pcm_start(struct snd_line6_pcm *line6pcm, int channels)
 	unsigned long flags_new = flags_old | channels;
 	int err = 0;
 
-#if LINE6_BACKUP_MONITOR_SIGNAL
-	if (!(line6pcm->line6->properties->capabilities & LINE6_BIT_HWMON)) {
-		line6pcm->prev_fbuf =
-		    kmalloc(LINE6_ISO_PACKETS * line6pcm->max_packet_size,
-			    GFP_KERNEL);
-
-		if (!line6pcm->prev_fbuf) {
-			dev_err(line6pcm->line6->ifcdev,
-				"cannot malloc monitor buffer\n");
-			return -ENOMEM;
-		}
-	}
-#else
 	line6pcm->prev_fbuf = NULL;
-#endif
 
 	if (((flags_old & MASK_CAPTURE) == 0) &&
 	    ((flags_new & MASK_CAPTURE) != 0)) {
@@ -164,9 +150,6 @@ int line6_pcm_stop(struct snd_line6_pcm *line6pcm, int channels)
 	    ((flags_new & MASK_PLAYBACK) == 0)) {
 		line6_unlink_audio_out_urbs(line6pcm);
 	}
-#if LINE6_BACKUP_MONITOR_SIGNAL
-	kfree(line6pcm->prev_fbuf);
-#endif
 
 	return 0;
 }
diff --git a/drivers/staging/line6/pcm.h b/drivers/staging/line6/pcm.h
index 77055b3..05f4ef3 100644
--- a/drivers/staging/line6/pcm.h
+++ b/drivers/staging/line6/pcm.h
@@ -39,9 +39,6 @@
 #define LINE6_IMPULSE_DEFAULT_PERIOD 100
 #endif
 
-#define LINE6_BACKUP_MONITOR_SIGNAL 0
-#define LINE6_REUSE_DMA_AREA_FOR_PLAYBACK 0
-
 /*
 	Get substream from Line6 PCM data structure
 */
diff --git a/drivers/staging/line6/playback.c b/drivers/staging/line6/playback.c
index b344527..e495b32 100644
--- a/drivers/staging/line6/playback.c
+++ b/drivers/staging/line6/playback.c
@@ -223,18 +223,10 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm)
 			} else
 				dev_err(line6pcm->line6->ifcdev, "driver bug: len = %d\n", len);	/* this is somewhat paranoid */
 		} else {
-#if LINE6_REUSE_DMA_AREA_FOR_PLAYBACK
-			/* set the buffer pointer */
-			urb_out->transfer_buffer =
-			    runtime->dma_area +
-			    line6pcm->pos_out * bytes_per_frame;
-#else
-			/* copy data */
 			memcpy(urb_out->transfer_buffer,
 			       runtime->dma_area +
 			       line6pcm->pos_out * bytes_per_frame,
 			       urb_out->transfer_buffer_length);
-#endif
 		}
 
 		line6pcm->pos_out += urb_frames;
-- 
2.7.4