linux-kernel - [PATCH -next v2] platform-msi: Save the msg context to desc in platform_msi_write

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Date:   Tue, 26 Oct 2021 14:46:25 +0800
From:   Bixuan Cui <cuibixuan@...ux.alibaba.com>
To:     linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.or, rafael@...nel.org,
        cuibixuan@...ux.alibaba.com
Subject: [PATCH -next v2] platform-msi: Save the msg context to desc in platform_msi_write_msg()

Save the msg context to desc when the msi interrupt is requested.
So that the requesters can use it in special scenarios, such as
resume mode.

Signed-off-by: Bixuan Cui <cuibixuan@...ux.alibaba.com>
---
Changes in v2:
* Modify the commit log and update my email address;

 drivers/base/platform-msi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/base/platform-msi.c b/drivers/base/platform-msi.c
index 3d6c8f9..824a540 100644
--- a/drivers/base/platform-msi.c
+++ b/drivers/base/platform-msi.c
@@ -90,6 +90,10 @@ 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);
 }
 
-- 
1.8.3.1