Re: [PATCH] ALSA: core: propagate actual error code from register_chrdev

[Takashi Iwai]

On Fri, 03 Jul 2026 12:38:40 +0200,
phucduc.bui@xxxxxxxxx wrote:
> 
> From: bui duc phuc <phucduc.bui@xxxxxxxxx>
> 
> The alsa_sound_init() function currently returns a hardcoded -EIO
> if register_chrdev() fails, masking specific error codes from
> __register_chrdev() such as -EINVAL, -ENOMEM, or -EBUSY.
> 
> Masking these failures under a generic -EIO makes system-level
> diagnostics unnecessarily difficult. Propagating explicit error codes
> from register_chrdev() is also an established convention widely
> practiced across other subsystems.
> 
> Fix this by capturing and propagating the dynamic error code from
> register_chrdev(). While at it, also assign the return value of
> snd_info_init() to the 'err' variable instead of hardcoding -ENOMEM
> to ensure consistency and future-proofing.
> 
> Signed-off-by: bui duc phuc <phucduc.bui@xxxxxxxxx>

Applied to for-next branch now.  Thanks.


Takashi