linux-kernel - Re: [PATCH v2] at91: pmc: Fixed irq's name allocation for programmable clocks

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Message-ID: <52F0A4FE.9020909@overkiz.com>
Date:	Tue, 04 Feb 2014 09:29:50 +0100
From:	Boris BREZILLON <b.brezillon@...rkiz.com>
To:	Jean-Jacques Hiblot <jjhiblot@...phandler.com>,
	nicolas.ferre@...el.com
CC:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] at91: pmc: Fixed irq's name allocation for programmable
 clocks

On 04/02/2014 09:21, Jean-Jacques Hiblot wrote:
> The name provided to request_irq() must be valid until the irq is released.
> This patch stores the name in the internal data structure.
>
> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@...phandler.com>
Acked-by: Boris BREZILLON <b.brezillon@...rkiz.com>
> ---
>   drivers/clk/at91/clk-programmable.c | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/clk/at91/clk-programmable.c b/drivers/clk/at91/clk-programmable.c
> index 8e242c7..799b75c 100644
> --- a/drivers/clk/at91/clk-programmable.c
> +++ b/drivers/clk/at91/clk-programmable.c
> @@ -44,6 +44,7 @@ struct clk_programmable {
>   	u8 css;
>   	u8 pres;
>   	u8 slckmck;
> +	char irq_name[11];
>   	const struct clk_programmable_layout *layout;
>   };
>   
> @@ -247,7 +248,6 @@ at91_clk_register_programmable(struct at91_pmc *pmc, unsigned int irq,
>   	struct clk_programmable *prog;
>   	struct clk *clk = NULL;
>   	struct clk_init_data init;
> -	char irq_name[11];
>   
>   	if (id > PROG_ID_MAX)
>   		return ERR_PTR(-EINVAL);
> @@ -269,9 +269,9 @@ at91_clk_register_programmable(struct at91_pmc *pmc, unsigned int irq,
>   	prog->irq = irq;
>   	init_waitqueue_head(&prog->wait);
>   	irq_set_status_flags(prog->irq, IRQ_NOAUTOEN);
> -	snprintf(irq_name, sizeof(irq_name), "clk-prog%d", id);
> +	snprintf(prog->irq_name, sizeof(prog->irq_name), "clk-prog%d", id);
>   	ret = request_irq(prog->irq, clk_programmable_irq_handler,
> -			  IRQF_TRIGGER_HIGH, irq_name, prog);
> +			  IRQF_TRIGGER_HIGH, prog->irq_name, prog);
>   	if (ret)
>   		return ERR_PTR(ret);
>   

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