linux-kernel - Re: [RFC PATCH 1/2] mailbox: imx: Clear GIEn bit at shutdown

Open Source and information security mailing list archives

Date:   Tue, 11 Jun 2019 06:33:15 +0200
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     daniel.baluta@....com
Cc:     jassisinghbrar@...il.com, aisheng.dong@....com,
        shawnguo@...nel.org, s.hauer@...gutronix.de,
        linux-kernel@...r.kernel.org, linux-imx@....com,
        kernel@...gutronix.de, festevam@...il.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC PATCH 1/2] mailbox: imx: Clear GIEn bit at shutdown

On Mon, Jun 10, 2019 at 10:16:08PM +0800, daniel.baluta@....com wrote:
> From: Daniel Baluta <daniel.baluta@....com>
> 
> GIEn is enabled at startup for RX doorbell mailboxes so
> we need to clear the bit at shutdown in order to avoid
> leaving the interrupt line enabled.
> 
> Signed-off-by: Daniel Baluta <daniel.baluta@....com>

Please send  bug fixes separately from RFC patches.

You can add my
Reviewed-by: Oleksij Rempel <o.rempel@...gutronix.de>

> ---
>  drivers/mailbox/imx-mailbox.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
> index 25be8bb5e371..9f74dee1a58c 100644
> --- a/drivers/mailbox/imx-mailbox.c
> +++ b/drivers/mailbox/imx-mailbox.c
> @@ -217,8 +217,8 @@ static void imx_mu_shutdown(struct mbox_chan *chan)
>  	if (cp->type == IMX_MU_TYPE_TXDB)
>  		tasklet_kill(&cp->txdb_tasklet);
>  
> -	imx_mu_xcr_rmw(priv, 0,
> -		   IMX_MU_xCR_TIEn(cp->idx) | IMX_MU_xCR_RIEn(cp->idx));
> +	imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_TIEn(cp->idx) |
> +		       IMX_MU_xCR_RIEn(cp->idx) | IMX_MU_xCR_GIEn(cp->idx));
>  
>  	free_irq(priv->irq, chan);
>  }
> -- 
> 2.17.1
> 
> 
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> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> 

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