linux-kernel - [PATCH 1/3] drm: arcpgu: Fix mmap() callback

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <633096a6b150d59bb1ec6d7d603398784f7c18b0.1500293127.git.joabreu@synopsys.com>
Date:   Mon, 17 Jul 2017 13:08:25 +0100
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:     Jose Abreu <Jose.Abreu@...opsys.com>,
        Carlos Palminha <CARLOS.PALMINHA@...opsys.com>,
        Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        Daniel Vetter <daniel.vetter@...el.com>,
        Dave Airlie <airlied@...il.com>
Subject: [PATCH 1/3] drm: arcpgu: Fix mmap() callback

Now that ARC properly supports DMA mmap() we can use the standard
CMA helper to map dumb buffers. This makes ARC PGU works with
standard DRM consumer applications like, for example, mpv/mplayer
via DRM. While at it, use the DEFINE_DRM_GEM_CMA_FOPS() helper.

This fixes the use of dumb buffers.

Signed-off-by: Jose Abreu <joabreu@...opsys.com>
Fixes: 0c4250e7b15e ("drm: Add support of ARC PGU display controller")
Cc: Carlos Palminha <palminha@...opsys.com>
Cc: Alexey Brodkin <abrodkin@...opsys.com>
Cc: Daniel Vetter <daniel.vetter@...el.com>
Cc: Dave Airlie <airlied@...il.com>
---
 drivers/gpu/drm/arc/arcpgu_drv.c | 24 +-----------------------
 1 file changed, 1 insertion(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/arc/arcpgu_drv.c b/drivers/gpu/drm/arc/arcpgu_drv.c
index 3e43a5d..20ab68f 100644
--- a/drivers/gpu/drm/arc/arcpgu_drv.c
+++ b/drivers/gpu/drm/arc/arcpgu_drv.c
@@ -48,29 +48,7 @@ static void arcpgu_setup_mode_config(struct drm_device *drm)
 	drm->mode_config.funcs = &arcpgu_drm_modecfg_funcs;
 }
 
-static int arcpgu_gem_mmap(struct file *filp, struct vm_area_struct *vma)
-{
-	int ret;
-
-	ret = drm_gem_mmap(filp, vma);
-	if (ret)
-		return ret;
-
-	vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags));
-	return 0;
-}
-
-static const struct file_operations arcpgu_drm_ops = {
-	.owner = THIS_MODULE,
-	.open = drm_open,
-	.release = drm_release,
-	.unlocked_ioctl = drm_ioctl,
-	.compat_ioctl = drm_compat_ioctl,
-	.poll = drm_poll,
-	.read = drm_read,
-	.llseek = no_llseek,
-	.mmap = arcpgu_gem_mmap,
-};
+DEFINE_DRM_GEM_CMA_FOPS(arcpgu_drm_ops);
 
 static void arcpgu_lastclose(struct drm_device *drm)
 {
-- 
1.9.1