linux-kernel - RE: [PATCH] reset: renesas: Check return value of reset_control

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Message-ID: <OS0PR01MB592247BCE3298FA97D0A2AAC86769@OS0PR01MB5922.jpnprd01.prod.outlook.com>
Date:   Wed, 15 Dec 2021 10:30:04 +0000
From:   Biju Das <biju.das.jz@...renesas.com>
To:     Heiner Kallweit <hkallweit1@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>
CC:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] reset: renesas: Check return value of
 reset_control_deassert()


Hi Heiner,

Thanks for the patch

> Subject: [PATCH] reset: renesas: Check return value of
> reset_control_deassert()
> 
> Deasserting the reset is vital, therefore bail out in case of error.
> 
> Suggested-by: Biju Das <biju.das.jz@...renesas.com>
> Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>

Reviewed-by: Biju Das <biju.das.jz@...renesas.com>

Cheers,
Biju

> ---
>  drivers/reset/reset-rzg2l-usbphy-ctrl.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/reset/reset-rzg2l-usbphy-ctrl.c
> b/drivers/reset/reset-rzg2l-usbphy-ctrl.c
> index 1e8315038..a8dde4606 100644
> --- a/drivers/reset/reset-rzg2l-usbphy-ctrl.c
> +++ b/drivers/reset/reset-rzg2l-usbphy-ctrl.c
> @@ -121,7 +121,9 @@ static int rzg2l_usbphy_ctrl_probe(struct
> platform_device *pdev)
>  		return dev_err_probe(dev, PTR_ERR(priv->rstc),
>  				     "failed to get reset\n");
> 
> -	reset_control_deassert(priv->rstc);
> +	error = reset_control_deassert(priv->rstc);
> +	if (error)
> +		return error;
> 
>  	priv->rcdev.ops = &rzg2l_usbphy_ctrl_reset_ops;
>  	priv->rcdev.of_reset_n_cells = 1;
> --
> 2.34.1