linux-kernel - [PATCH -next v4 1/2] platform-msi: Save the msg context to desc in platform_msi_write

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Message-ID: <20210830073858.47084-1-cuibixuan@huawei.com>
Date:   Mon, 30 Aug 2021 15:38:57 +0800
From:   Bixuan Cui <cuibixuan@...wei.com>
To:     <iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>
CC:     <will@...nel.org>, <gregkh@...uxfoundation.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: [PATCH -next v4 1/2] platform-msi: Save the msg context to desc in platform_msi_write_msg()

Save the msg context to desc when 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