[ALSA - driver 0001300]: modprobe goes into D-state when inserting snd-ad1816a

[bugtrack@alsa-project.org]

A NOTE has been added to this issue.
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<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1300> 
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Reported By:                tek01
Assigned To:                perex
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Project:                    ALSA - driver
Issue ID:                   1300
Category:                   ISA - ad1816a
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     feedback
Distribution:               Debian Sarge
Kernel Version:             2.6.12.3 and 2.6.13-rc4
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Date Submitted:             08-02-2005 16:56 CEST
Last Modified:              08-15-2005 14:33 CEST
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Summary:                    modprobe goes into D-state when inserting
snd-ad1816a
Description: 
Under Linux 2.6.12.3 and Linux 2.6.13-rc4 inserting the snd-ad1816a module
causes the modprobe process to go into D-state forever. 

Linux 2.6.11.12 has been tested and is working fine.
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Relationships       ID      Summary
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related to          0001301 Kernel OSS emulation stops working afte...
related to          0001302 Clicking noise when using kphone with t...
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 tek01 - 08-13-05 22:51 
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Your assumption that the problem might be within the pnp code seems to be
correct. I've added some printk-Statements to the AD1816A driver as
shipped with vanilla Linux 2.6.13-rc6 preserving line numbers. Here is
what happens:

The second call of pnp_request_card_device() in line 125 of ad1816a.c
returns NULL, thus snd_card_ad1816a_pnp() returns(-EBUSY) in line 128. The
error is passed on to snd_ad1816a_pnp_detect() by snd_card_ad1816a_probe()
in line 200. snd_ad1816a_pnp_detect(), which was obviously called by the
pnp code, returns the error in line 271. pnp_register_card_driver() in
line 314 which initially triggered the call to snd_ad1816a_pnp_detect()
does not return.

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 perex - 08-15-05 14:33 
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Could you try the attached patch (pnp-card.c.patch) ?

It's for the PnP core in kernel not for ALSA.

Issue History
Date Modified  Username       Field                    Change              
======================================================================
08-02-05 16:56 tek01          New Issue                                    
08-02-05 16:56 tek01          Distribution              => Debian Sarge    
08-02-05 16:56 tek01          Kernel Version            => 2.6.12.3 and
2.6.13-rc4
08-02-05 18:27 Adrian Bunk    Issue Monitored: Adrian Bunk                    
08-02-05 22:26 perex          Note Added: 0005609                          
08-03-05 10:10 perex          Relationship added       related to 0001301  
08-03-05 10:11 perex          Relationship added       related to 0001302  
08-09-05 12:57 perex          Assigned To               => perex           
08-09-05 12:57 perex          Status                   new => feedback     
08-13-05 22:51 tek01          Note Added: 0005811                          
08-15-05 14:32 perex          File Added: pnp-card.c.patch                    
08-15-05 14:33 perex          Note Added: 0005818                          
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