diff --git a/include/cdio/mmc.h b/include/cdio/mmc.h
index 767596cc..69efa280 100644
--- a/include/cdio/mmc.h
+++ b/include/cdio/mmc.h
@@ -1,7 +1,7 @@
 /*
-    $Id: mmc.h,v 1.29 2006/10/27 10:38:41 rocky Exp $
+    $Id: mmc.h,v 1.30 2007/11/21 03:01:58 rocky Exp $
 
-    Copyright (C) 2003, 2004, 2005, 2006 Rocky Bernstein <rocky@cpan.org>
+    Copyright (C) 2003, 2004, 2005, 2006, 2007 Rocky Bernstein <rocky@gnu.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -785,6 +785,31 @@ mmc_audio_read_subchannel (CdIo_t *p_cdio,
                    const mmc_cdb_t *p_cdb,
                    cdio_mmc_direction_t e_direction, unsigned int i_buf, 
                    /*in/out*/ void *p_buf );
+
+  /**
+    Run a Multimedia command (MMC) specifying the CDB length.
+    The motivation here is for example ot use in is an undocumented 
+    debug command for LG drives (namely E7), whose length is being 
+    miscalculated by mmc_get_cmd_len(); it doesn't follow the usual 
+    code number to length conventions. Patch supplied by SukkoPera.
+
+    @param p_cdio	 CD structure set by cdio_open().
+    @param i_timeout_ms  time in milliseconds we will wait for the command
+                         to complete. 
+    @param p_cdb	 CDB bytes. All values that are needed should be set 
+                         on input. 
+    @param i_cdb	 number of CDB bytes. 
+    @param e_direction   direction the transfer is to go.
+    @param i_buf	 Size of buffer
+    @param p_buf	 Buffer for data, both sending and receiving.
+
+    @return 0 if command completed successfully.
+  */
+  int mmc_run_cmd_len( const CdIo_t *p_cdio, unsigned int i_timeout_ms,
+                   const mmc_cdb_t *p_cdb, unsigned int i_cdb,
+                   cdio_mmc_direction_t e_direction, unsigned int i_buf,
+                   /*in/out*/ void *p_buf );
+
   /**
     Set the block size for subsequest read requests, via MMC.
   */
diff --git a/lib/driver/libcdio.sym b/lib/driver/libcdio.sym
index 2c118e35..43fbdcb5 100644
--- a/lib/driver/libcdio.sym
+++ b/lib/driver/libcdio.sym
@@ -201,6 +201,7 @@ mmc_read_data_sectors
 mmc_read_sectors
 mmc_read_timeout_ms
 mmc_run_cmd
+mmc_run_cmd_len
 mmc_set_blocksize
 mmc_set_speed
 mmc_start_stop_media
diff --git a/lib/driver/mmc.c b/lib/driver/mmc.c
index 2e6a1d4c..a0658962 100644
--- a/lib/driver/mmc.c
+++ b/lib/driver/mmc.c
@@ -1,8 +1,8 @@
 /*  Common Multimedia Command (MMC) routines.
 
-    $Id: mmc.c,v 1.35 2006/10/11 12:38:18 rocky Exp $
+    $Id: mmc.c,v 1.36 2007/11/21 03:01:58 rocky Exp $
 
-    Copyright (C) 2004, 2005, 2006 Rocky Bernstein <rocky@cpan.org>
+    Copyright (C) 2004, 2005, 2006, 2007 Rocky Bernstein <rocky@gnu.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -950,6 +950,21 @@ mmc_run_cmd( const CdIo_t *p_cdio, unsigned int i_timeout_ms,
 				     p_cdb, e_direction, i_buf, p_buf);
 }
 
+/* Added by SukkoPera to allow CDB length to be specified manually */
+driver_return_code_t
+mmc_run_cmd_len( const CdIo_t *p_cdio, unsigned int i_timeout_ms,
+                  const mmc_cdb_t *p_cdb, unsigned int i_cdb,
+                  cdio_mmc_direction_t e_direction, unsigned int i_buf,
+                  /*in/out*/ void *p_buf )
+{
+  if (!p_cdio) return DRIVER_OP_UNINIT;
+  if (!p_cdio->op.run_mmc_cmd) return DRIVER_OP_UNSUPPORTED;
+  return p_cdio->op.run_mmc_cmd(p_cdio->env, i_timeout_ms,
+                                     i_cdb,
+                                     p_cdb, e_direction, i_buf, p_buf);
+}
+
+
 /*! Return the byte size returned on a MMC READ command (e.g. READ_10,
     READ_MSF, ..)
 */