[ALSA - lib 0002287]: Segfaults all functions after snd_pcm_hw_params_get_buffer_size (params,(snd_pcm_uframes_t *) & val);

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A NOTE has been added to this issue.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2287> 
======================================================================
Reported By:                cruiseoveride
Assigned To:                
======================================================================
Project:                    ALSA - lib
Issue ID:                   2287
Category:                   0_general
Reproducibility:            always
Severity:                   crash
Priority:                   normal
Status:                     new
======================================================================
Date Submitted:             07-16-2006 18:03 CEST
Last Modified:              07-26-2006 04:30 CEST
======================================================================
Summary:                    Segfaults all functions after
snd_pcm_hw_params_get_buffer_size (params,(snd_pcm_uframes_t *) & val);
Description: 
I am new to Alsa and am not happy at all at the state of documentation
available.
You guys seriously need to do something about this.

I have an M-Audio Audiophile Delta 192 (ICE1724) and I want to port
envy24control for this chip, However I first need to familiar myself with
the ALSA API. So I began by looking for simple examples on how to use ALSA
API and came accross the followinf prog (Attached file test.c).

The program compiles cleanly with gcc-4.1 and runs, however after it
prints out the ..."buffer size = 8192 frames"
It segfaults.

If you slash out line 104, it resolves the issue.

My question is,

Is there a bug in this function?
Code was obtained from http://www.linuxjournal.com/article/6735
======================================================================

----------------------------------------------------------------------
 Raymond - 07-26-06 01:33 
----------------------------------------------------------------------
All the features of the envy24ht have already implemented in ice1724.c,
ak4114.c, ak4xxx-adda.c

What you need to do is to trace which pins of envy24ht connect to which
pins of AK4114, AK4358 and AK5385. espeically those GPIO pins ?

You have to identify which components are connnected to those 23 GPIO pins
of envy24ht 

Do you really want to write from scratch or just modify existing driver to
support audiophile 192 ?

e.g. ap192_add_controls seem to call snd_akm4xxx_build_controls()



----------------------------------------------------------------------
 cruiseoveride - 07-26-06 04:30 
----------------------------------------------------------------------
Well i need to get the data sheet for the vt1724 first.
my card was made 2005, hope it is the same vt chip from 2001
or is there somewhere else i can get the data sheet from

i found this.
http://www.nbritton.org/uploads/envy24/

can i use bsd drivers as a guide?

Issue History
Date Modified  Username       Field                    Change              
======================================================================
07-16-06 18:03 cruiseoveride  New Issue                                    
07-16-06 18:03 cruiseoveride  File Added: test.c                           
07-16-06 20:38 cruiseoveride  Issue Monitored: cruiseoveride                    
07-17-06 02:44 Raymond        Note Added: 0011032                          
07-17-06 02:47 Raymond        Note Edited: 0011032                         
07-17-06 03:18 Raymond        Note Edited: 0011032                         
07-17-06 05:45 cruiseoveride  Note Added: 0011033                          
07-17-06 05:46 cruiseoveride  Note Edited: 0011033                         
07-17-06 07:31 Raymond        Note Added: 0011035                          
07-17-06 08:23 Raymond        Note Added: 0011036                          
07-17-06 08:26 Raymond        Note Edited: 0011036                         
07-17-06 14:48 cruiseoveride  Note Added: 0011039                          
07-17-06 14:59 cruiseoveride  Note Added: 0011040                          
07-17-06 16:07 Raymond        Note Added: 0011042                          
07-17-06 16:31 Raymond        Note Edited: 0011042                         
07-17-06 16:40 cruiseoveride  Note Added: 0011044                          
07-17-06 17:13 cruiseoveride  Note Added: 0011045                          
07-17-06 17:34 Raymond        Note Added: 0011046                          
07-17-06 17:56 cruiseoveride  Note Added: 0011047                          
07-18-06 07:44 Raymond        Note Added: 0011053                          
07-18-06 14:21 cruiseoveride  Note Added: 0011057                          
07-18-06 14:35 Raymond        Note Added: 0011060                          
07-19-06 02:52 cruiseoveride  Note Added: 0011075                          
07-19-06 03:27 Raymond        Note Added: 0011076                          
07-19-06 06:21 Raymond        Note Added: 0011080                          
07-19-06 17:43 cruiseoveride  Note Added: 0011090                          
07-19-06 17:50 cruiseoveride  File Added: chip.jpg                         
07-20-06 04:22 Raymond        Note Added: 0011107                          
07-20-06 05:01 Raymond        Note Edited: 0011107                         
07-20-06 08:05 cruiseoveride  Note Added: 0011112                          
07-20-06 08:19 Raymond        Note Added: 0011114                          
07-20-06 08:22 Raymond        Note Edited: 0011114                         
07-20-06 10:49 Raymond        Note Added: 0011116                          
07-20-06 15:52 cruiseoveride  Note Added: 0011127                          
07-20-06 16:09 Raymond        Note Added: 0011130                          
07-20-06 16:12 Raymond        Note Added: 0011131                          
07-20-06 16:35 cruiseoveride  Note Added: 0011132                          
07-20-06 16:39 cruiseoveride  Note Edited: 0011132                         
07-20-06 17:42 cruiseoveride  Note Added: 0011134                          
07-20-06 17:49 Raymond        Note Added: 0011135                          
07-20-06 17:55 Raymond        Note Edited: 0011135                         
07-20-06 19:30 Raymond        Note Added: 0011136                          
07-20-06 19:31 Raymond        Note Edited: 0011136                         
07-21-06 01:16 cruiseoveride  Note Added: 0011138                          
07-21-06 01:28 cruiseoveride  Note Added: 0011139                          
07-21-06 01:45 cruiseoveride  Note Added: 0011140                          
07-21-06 03:28 Raymond        Note Added: 0011141                          
07-21-06 20:23 cruiseoveride  Note Added: 0011155                          
07-22-06 02:13 Raymond        Note Added: 0011157                          
07-22-06 02:42 Raymond        Note Edited: 0011157                         
07-22-06 02:53 Raymond        Note Edited: 0011157                         
07-22-06 03:00 cruiseoveride  Note Added: 0011161                          
07-22-06 03:01 cruiseoveride  Note Edited: 0011161                         
07-22-06 04:12 Raymond        Note Added: 0011164                          
07-22-06 04:15 Raymond        Note Edited: 0011164                         
07-23-06 04:05 Raymond        Note Added: 0011179                          
07-23-06 06:26 cruiseoveride  Note Added: 0011181                          
07-23-06 06:41 Raymond        Note Added: 0011182                          
07-23-06 06:46 Raymond        Note Edited: 0011182                         
07-23-06 06:47 Raymond        Note Edited: 0011182                         
07-23-06 06:52 Raymond        Note Edited: 0011182                         
07-23-06 06:55 Raymond        Note Edited: 0011182                         
07-23-06 13:05 Raymond        Note Edited: 0011182                         
07-23-06 13:11 Raymond        Note Edited: 0011182                         
07-23-06 13:17 Raymond        Note Edited: 0011182                         
07-23-06 13:23 Raymond        Note Edited: 0011182                         
07-23-06 14:16 Raymond        Note Added: 0011187                          
07-23-06 14:20 Raymond        Note Edited: 0011187                         
07-23-06 15:24 Raymond        Note Edited: 0011187                         
07-23-06 17:23 rlrevell       Note Added: 0011190                          
07-23-06 17:39 Raymond        Note Added: 0011191                          
07-23-06 17:42 Raymond        Note Edited: 0011191                         
07-23-06 17:49 cruiseoveride  Note Added: 0011192                          
07-23-06 17:57 cruiseoveride  Note Added: 0011193                          
07-23-06 18:03 rlrevell       Note Added: 0011194                          
07-23-06 18:27 cruiseoveride  Note Added: 0011195                          
07-23-06 18:30 cruiseoveride  Note Edited: 0011195                         
07-23-06 18:33 cruiseoveride  Note Edited: 0011195                         
07-24-06 02:15 Raymond        Note Added: 0011206                          
07-24-06 02:27 Raymond        Note Edited: 0011206                         
07-24-06 02:28 Raymond        Note Edited: 0011206                         
07-24-06 07:12 Raymond        Note Edited: 0011206                         
07-24-06 07:48 Raymond        Note Edited: 0011206                         
07-25-06 18:02 Raymond        Note Added: 0011230                          
07-26-06 00:19 cruiseoveride  Note Added: 0011233                          
07-26-06 01:20 Raymond        Note Added: 0011234                          
07-26-06 01:27 Raymond        Note Edited: 0011234                         
07-26-06 01:31 Raymond        Note Edited: 0011234                         
07-26-06 01:33 Raymond        Note Edited: 0011234                         
07-26-06 04:30 cruiseoveride  Note Added: 0011237                          
======================================================================



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