linux-kernel - [PATCH 2/4] GPU-DRM-QXL: Move three assignments in qxl_device

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Date:   Thu, 22 Sep 2016 08:21:14 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     dri-devel@...ts.freedesktop.org,
        Bhaktipriya Shridhar <bhaktipriya96@...il.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Noralf Trønnes <noralf@...nnes.org>,
        Tejun Heo <tj@...nel.org>, Thierry Reding <treding@...dia.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 2/4] GPU-DRM-QXL: Move three assignments in qxl_device_init()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 21 Sep 2016 22:33:54 +0200

Move the assignments for three data structure members to the end
so that they will only be performed if the desired resource allocations
succeeded by this function.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/gpu/drm/qxl/qxl_kms.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c
index 76852f1..76780c2 100644
--- a/drivers/gpu/drm/qxl/qxl_kms.c
+++ b/drivers/gpu/drm/qxl/qxl_kms.c
@@ -212,10 +212,6 @@ static int qxl_device_init(struct qxl_device *qdev,
 	/* TODO - slot initialization should happen on reset. where is our
 	 * reset handler? */
 	qdev->n_mem_slots = qdev->rom->slots_end;
-	qdev->slot_gen_bits = qdev->rom->slot_gen_bits;
-	qdev->slot_id_bits = qdev->rom->slot_id_bits;
-	qdev->va_slot_mask =
-		(~(uint64_t)0) >> (qdev->slot_id_bits + qdev->slot_gen_bits);
 	qdev->mem_slots = kmalloc_array(qdev->n_mem_slots,
 					sizeof(*qdev->mem_slots),
 					GFP_KERNEL);
@@ -260,7 +256,10 @@ static int qxl_device_init(struct qxl_device *qdev,
 
 
 	INIT_WORK(&qdev->gc_work, qxl_gc_work);
-
+	qdev->slot_gen_bits = qdev->rom->slot_gen_bits;
+	qdev->slot_id_bits = qdev->rom->slot_id_bits;
+	qdev->va_slot_mask =
+		(~(uint64_t)0) >> (qdev->slot_id_bits + qdev->slot_gen_bits);
 	return 0;
 }
 
-- 
2.10.0