netdev - Re: [PATCH] net:mv88e6xxx: dispose irq mapping

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Message-ID: <20161206141923.GB26615@lunn.ch>
Date:   Tue, 6 Dec 2016 15:19:23 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Volodymyr Bendiuga <volodymyr.bendiuga@...termo.se>
Cc:     vivien.didelot@...oirfairelinux.com, f.fainelli@...il.com,
        netdev@...r.kernel.org
Subject: Re: [PATCH] net:mv88e6xxx: dispose irq mapping

On Tue, Dec 06, 2016 at 11:05:43AM +0100, Volodymyr Bendiuga wrote:
> If this is not done, then it is not possible to map
> irq next time, after EPROBE_DEFER.
> 
> Signed-off-by: Volodymyr Bendiuga <volodymyr.bendiuga@...termo.se>

Hi Volodymyr

Thanks for your patches.

Please could you include in the subject line which tree it is for. See

Documentation/networking/netdev-FAQ.txt


> ---
>  drivers/net/dsa/mv88e6xxx/chip.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
> index 05942e3..12e7d38 100644
> --- a/drivers/net/dsa/mv88e6xxx/chip.c
> +++ b/drivers/net/dsa/mv88e6xxx/chip.c
> @@ -420,6 +420,7 @@ static void mv88e6xxx_g1_irq_free(struct mv88e6xxx_chip *chip)
>  	mv88e6xxx_g1_write(chip, GLOBAL_CONTROL, mask);
>  
>  	free_irq(chip->irq, chip);
> +	irq_dispose_mapping(chip->irq);

This seems like the wrong place to do this.

The mapping is created by chip->irq = of_irq_get(np, 0); in
mv88e6xxx_probe(). So the correct place to dispose of this mapping would be in
mv88e6xxx_remove() and the error path of mv88e6xxx_probe().

Thanks
	Andrew