linux-kernel - Re: [PATCH] can: tcan4x5x: Turn on the power before parsing the config

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Message-ID: <deabf78f-5b6a-f631-412d-49dd6f0c372a@pengutronix.de>
Date:   Mon, 9 Dec 2019 22:38:54 +0100
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     Dan Murphy <dmurphy@...com>
Cc:     linux-can@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH] can: tcan4x5x: Turn on the power before parsing the
 config

On 12/9/19 10:23 PM, Dan Murphy wrote:
> The parse config function now performs action on the device either
> reading or writing and a reset.  If the regulator is managed it needs
> to be turned on.  So turn on the regulator if available if the parsing
> fails then turn off the regulator.
> 
> Fixes: a5235f3c7c23 ("can: tcan45x: Make wake-up GPIO an optional GPIO")
> Signed-off-by: Dan Murphy <dmurphy@...com>
> ---
>  drivers/net/can/m_can/tcan4x5x.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/can/m_can/tcan4x5x.c b/drivers/net/can/m_can/tcan4x5x.c
> index 4e1789ea2bc3..515486fcb150 100644
> --- a/drivers/net/can/m_can/tcan4x5x.c
> +++ b/drivers/net/can/m_can/tcan4x5x.c
> @@ -451,11 +451,11 @@ static int tcan4x5x_can_probe(struct spi_device *spi)
>  	priv->regmap = devm_regmap_init(&spi->dev, &tcan4x5x_bus,
>  					&spi->dev, &tcan4x5x_regmap);
>  
> +	tcan4x5x_power_enable(priv->power, 1);

please add error handling

Marc

-- 
Pengutronix e.K.                 | Marc Kleine-Budde           |
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