linux-kernel - Re: [PATCH -next v3 1/2] platform-msi: Save the msg context to desc in platform_msi_write

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Date:   Tue, 14 Sep 2021 11:08:13 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Bixuan Cui <cuibixuan@...wei.com>
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        will@...nel.org, rafael@...nel.org, robin.murphy@....com,
        joro@...tes.org, jean-philippe@...aro.org,
        Jonathan.Cameron@...wei.com, thunder.leizhen@...wei.com,
        maz@...nel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH -next v3 1/2] platform-msi: Save the msg context to desc
 in platform_msi_write_msg()

On Sat, Aug 28, 2021 at 02:39:14PM +0800, Bixuan Cui wrote:
> Save the msg context to desc when the msi interrupt is requested.
> The drivers can use it in special scenarios(such as resume).
> 
> Signed-off-by: Bixuan Cui <cuibixuan@...wei.com>
> ---
>  drivers/base/platform-msi.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/base/platform-msi.c b/drivers/base/platform-msi.c
> index 3d6c8f9caf43..60962a224fcc 100644
> --- a/drivers/base/platform-msi.c
> +++ b/drivers/base/platform-msi.c
> @@ -90,6 +90,9 @@ static void platform_msi_write_msg(struct irq_data *data, struct msi_msg *msg)
>  
>  	priv_data = desc->platform.msi_priv_data;
>  
> +	desc->msg.address_lo = msg->address_lo;
> +	desc->msg.address_hi = msg->address_hi;
> +	desc->msg.data = msg->data;
>  	priv_data->write_msg(desc, msg);
>  }
>  
> -- 
> 2.17.1
> 

Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>