[PATCH] ALSA: firewire: Clean up a locking issue in copy_resp_to_buf()

[Takashi Iwai]

On Fri, 13 Nov 2020 11:12:41 +0100,
Dan Carpenter wrote:
> 
> The spin_lock/unlock_irq() functions cannot be nested.  The problem is
> that presumably we would want the IRQs to be re-enabled on the second
> call the spin_unlock_irq() but instead it will be enabled at the first
> call so IRQs will be enabled earlier than expected.
> 
> In this situation the copy_resp_to_buf() function is only called from
> one function and it is called with IRQs disabled.  We can just use
> the regular spin_lock/unlock() functions.
> 
> Fixes: 555e8a8f7f14 ("ALSA: fireworks: Add command/response functionality into hwdep interface")
> Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>
> ---

Thanks, applied now with Cc to stable.


Takashi