linux-kernel - [PATCH v3 3/5] vfio: platform: simplify device removal

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Message-Id: <20210126165835.687514-4-u.kleine-koenig@pengutronix.de>
Date:   Tue, 26 Jan 2021 17:58:33 +0100
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Russell King <linux@...linux.org.uk>,
        Eric Auger <eric.auger@...hat.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Cornelia Huck <cohuck@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kernel@...gutronix.de,
        linux-arm-kernel@...ts.infradead.org, kvm@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>
Subject: [PATCH v3 3/5] vfio: platform: simplify device removal

vfio_platform_remove_common() cannot return non-NULL in
vfio_amba_remove() as the latter is only called if vfio_amba_probe()
returned success.

Diagnosed-by: Arnd Bergmann <arnd@...db.de>
Acked-by: Eric Auger <eric.auger@...hat.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
 drivers/vfio/platform/vfio_amba.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/vfio/platform/vfio_amba.c b/drivers/vfio/platform/vfio_amba.c
index 9636a2afaecd..7b3ebf1558e1 100644
--- a/drivers/vfio/platform/vfio_amba.c
+++ b/drivers/vfio/platform/vfio_amba.c
@@ -73,16 +73,12 @@ static int vfio_amba_probe(struct amba_device *adev, const struct amba_id *id)
 
 static int vfio_amba_remove(struct amba_device *adev)
 {
-	struct vfio_platform_device *vdev;
-
-	vdev = vfio_platform_remove_common(&adev->dev);
-	if (vdev) {
-		kfree(vdev->name);
-		kfree(vdev);
-		return 0;
-	}
+	struct vfio_platform_device *vdev =
+		vfio_platform_remove_common(&adev->dev);
 
-	return -EINVAL;
+	kfree(vdev->name);
+	kfree(vdev);
+	return 0;
 }
 
 static const struct amba_id pl330_ids[] = {
-- 
2.29.2