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Date:   Sun, 28 May 2023 18:20:02 +0100
From:   Jonathan Cameron <jic23@kernel.org>
To:     Matti Vaittinen <mazziesaccount@gmail.com>
Cc:     Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
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        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
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        Eric Dumazet <edumazet@google.com>,
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        linux-mips@vger.kernel.org
Subject: Re: [PATCH v6 3/8] net-next: mvpp2: relax return value check for
 IRQ get
Message-ID: <20230528182002.6252f3cb@jic23-huawei>
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        <a9dfab391fbaa7492e69729ab1396c41c8ad4991.1685082026.git.mazziesaccount@gmail.com>
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On Fri, 26 May 2023 09:36:57 +0300
Matti Vaittinen <mazziesaccount@gmail.com> wrote:

> fwnode_irq_get[_byname]() were changed to not return 0 anymore.
> 
> Drop check for return value 0.
> 
> Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
> 
Seems straight forward though 'maybe' nice to return the actual
error rather than eating it.  That relies on nothing up the stack
handling resulting error codes different though.


> ---
> Revision history:
> v5 =>:
>  - No changes
> v4 = v5:
> Fix the subject, mb1232 => mvpp2
> 
> The first patch of the series changes the fwnode_irq_get() so this depends
> on the first patch of the series and should not be applied alone.
> ---
>  drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> index adc953611913..5b987af306a5 100644
> --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> @@ -5833,7 +5833,7 @@ static int mvpp2_multi_queue_vectors_init(struct mvpp2_port *port,
>  			v->irq = of_irq_get_byname(port_node, irqname);
>  		else
>  			v->irq = fwnode_irq_get(port->fwnode, i);
> -		if (v->irq <= 0) {
> +		if (v->irq < 0) {
>  			ret = -EINVAL;

			ret = v->irq; seems nicer.

>  			goto err;
>  		}
> @@ -6764,7 +6764,7 @@ static int mvpp2_port_probe(struct platform_device *pdev,
>  		err = -EPROBE_DEFER;
>  		goto err_deinit_qvecs;
>  	}
> -	if (port->port_irq <= 0)
> +	if (port->port_irq < 0)
>  		/* the link irq is optional */
>  		port->port_irq = 0;
>