linux-kernel - [PATCH] staging: vc04_services: Fixed address type mismatch in vchiq

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Message-Id: <20210218091015.92467-1-pritthijit.nath@icloud.com>
Date:   Thu, 18 Feb 2021 14:40:15 +0530
From:   Pritthijit Nath <pritthijit.nath@...oud.com>
To:     nsaenzjulienne@...e.de, arnd@...db.de, dan.carpenter@...cle.com,
        amarjargal16@...il.com, phil@...pberrypi.com,
        gregkh@...uxfoundation.org
Cc:     devel@...verdev.osuosl.org, bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Pritthijit Nath <pritthijit.nath@...oud.com>
Subject: [PATCH] staging: vc04_services: Fixed address type mismatch in vchiq_arm.c

This change fixes a sparse address type mismatch warning "incorrect type
in assignment (different address spaces)".

Signed-off-by: Pritthijit Nath <pritthijit.nath@...oud.com>
---
 .../staging/vc04_services/interface/vchiq_arm/vchiq_arm.c   | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index 59e45dc03a97..3c715b926a57 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -1214,11 +1214,7 @@ static int vchiq_ioc_await_completion(struct vchiq_instance *instance,
 		    !instance->use_close_delivered)
 			unlock_service(service);
 
-		/*
-		 * FIXME: address space mismatch, does bulk_userdata
-		 * actually point to user or kernel memory?
-		 */
-		user_completion.bulk_userdata = completion->bulk_userdata;
+		user_completion.bulk_userdata = (void __user *)completion->bulk_userdata;
 
 		if (vchiq_put_completion(args->buf, &user_completion, ret)) {
 			if (ret == 0)
-- 
2.25.1