linux-kernel - [PATCH] drm/vboxvideo: Used the vram helper

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Date:   Fri, 27 Nov 2020 11:14:42 +0800
From:   Tian Tao <tiantao6@...ilicon.com>
To:     <hdegoede@...hat.com>, <airlied@...ux.ie>, <daniel@...ll.ch>
CC:     <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] drm/vboxvideo: Used the vram helper

if the driver uses drmm_vram_helper_init, there is no need to
call drm_vram_helper_release_mm when the drm module get unloaded,
as this will done automagically.

Signed-off-by: Tian Tao <tiantao6@...ilicon.com>
---
 drivers/gpu/drm/vboxvideo/vbox_ttm.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/vboxvideo/vbox_ttm.c b/drivers/gpu/drm/vboxvideo/vbox_ttm.c
index f5a0667..e1909a8 100644
--- a/drivers/gpu/drm/vboxvideo/vbox_ttm.c
+++ b/drivers/gpu/drm/vboxvideo/vbox_ttm.c
@@ -16,8 +16,8 @@ int vbox_mm_init(struct vbox_private *vbox)
 	int ret;
 	struct drm_device *dev = &vbox->ddev;
 
-	vmm = drm_vram_helper_alloc_mm(dev, pci_resource_start(dev->pdev, 0),
-				       vbox->available_vram_size);
+	vmm = drmm_vram_helper_init(dev, pci_resource_start(dev->pdev, 0),
+				    vbox->available_vram_size);
 	if (IS_ERR(vmm)) {
 		ret = PTR_ERR(vmm);
 		DRM_ERROR("Error initializing VRAM MM; %d\n", ret);
@@ -32,5 +32,4 @@ int vbox_mm_init(struct vbox_private *vbox)
 void vbox_mm_fini(struct vbox_private *vbox)
 {
 	arch_phys_wc_del(vbox->fb_mtrr);
-	drm_vram_helper_release_mm(&vbox->ddev);
 }
-- 
2.7.4