linux-kernel - Re: [PATCH -tip] drivers/serial/8250.c: 'i' may be used uninitialized

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Message-ID: <20081001080150.GC25832@elte.hu>
Date:	Wed, 1 Oct 2008 10:01:50 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Steven Noonan <steven@...inklabs.net>
Cc:	linux-kernel@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH -tip] drivers/serial/8250.c: 'i' may be used
	uninitialized


( Alan Cc:-ed. Seems like gcc bogosity - so your solution of using
  uninitialized_var() is the correct way to annotate this. )

* Steven Noonan <steven@...inklabs.net> wrote:

> Signed-off-by: Steven Noonan <steven@...inklabs.net>
> ---
>  drivers/serial/8250.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
> index 356c2a2..b51e91e 100644
> --- a/drivers/serial/8250.c
> +++ b/drivers/serial/8250.c
> @@ -1599,7 +1599,7 @@ static int serial_link_irq_chain(struct uart_8250_port *up)
>  
>  static void serial_unlink_irq_chain(struct uart_8250_port *up)
>  {
> -	struct irq_info *i;
> +	struct irq_info *uninitialized_var(i);
>  	struct hlist_node *n;
>  	struct hlist_head *h;
>  
> -- 
> 1.6.0.2
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