Re: [PATCH 1/3] Char: mxser_new, fix recursive locking

> Signed-off-by: Jan "Yenya" Kasprzak <[email protected]>
> Cc: Jiri Slaby <[email protected]>
> Cc: Alan Cox <[email protected]>

Acked-by: Alan Cox <[email protected]>
> 
> --- linux-2.6.21-rc2/drivers/char/mxser_new.c.orig	2007-04-20 15:41:46.000000000 +0200
> +++ linux-2.6.21-rc2/drivers/char/mxser_new.c	2007-04-20 15:46:46.000000000 +0200
> @@ -2230,7 +2230,14 @@
>  	port->mon_data.rxcnt += cnt;
>  	port->mon_data.up_rxcnt += cnt;
>  
> +	/*
> +	 * We are called from an interrupt context with &port->slock
> +	 * being held. Drop it temporarily in order to prevent
> +	 * recursive locking.
> +	 */
> +	spin_unlock(&port->slock);
>  	tty_flip_buffer_push(tty);
> +	spin_lock(&port->slock);
>  }
>  
-
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---

• References:
  • [PATCH 1/3] Char: mxser_new, fix recursive locking
    • From: Jiri Slaby <[email protected]>
  • Re: [PATCH 1/3] Char: mxser_new, fix recursive locking
    • From: Alan Cox <[email protected]>
  • Re: [PATCH 1/3] Char: mxser_new, fix recursive locking
    • From: Jan Yenya Kasprzak <[email protected]>

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