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From: Souptick Joarder <jrdr.linux@gmail.com>
To: akpm@linux-foundation.org, willy@infradead.org, mhocko@suse.com,
	hjc@rock-chips.com, heiko@sntech.de, airlied@linux.ie,
	linux@armlinux.org.uk, robin.murphy@arm.com
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	linux-arm-kernel@lists.infradead.org,
	dri-devel@lists.freedesktop.org,
	linux-rockchip@lists.infradead.org
Subject: [PATCHv2 4/9] drm/rockchip/rockchip_drm_gem.c: Convert to use vm_insert_range
Date: Thu, 31 Jan 2019 08:40:40 +0530	[thread overview]
Message-ID: <20190131031040.GA2320@jordon-HP-15-Notebook-PC> (raw)

Convert to use vm_insert_range() to map range of kernel
memory to user vma.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index a8db758..c9e207f 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -221,26 +221,13 @@ static int rockchip_drm_gem_object_mmap_iommu(struct drm_gem_object *obj,
 					      struct vm_area_struct *vma)
 {
 	struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
-	unsigned int i, count = obj->size >> PAGE_SHIFT;
+	unsigned int count = obj->size >> PAGE_SHIFT;
 	unsigned long user_count = vma_pages(vma);
-	unsigned long uaddr = vma->vm_start;
-	unsigned long offset = vma->vm_pgoff;
-	unsigned long end = user_count + offset;
-	int ret;
 
 	if (user_count == 0)
 		return -ENXIO;
-	if (end > count)
-		return -ENXIO;
 
-	for (i = offset; i < end; i++) {
-		ret = vm_insert_page(vma, uaddr, rk_obj->pages[i]);
-		if (ret)
-			return ret;
-		uaddr += PAGE_SIZE;
-	}
-
-	return 0;
+	return vm_insert_range(vma, rk_obj->pages, count);
 }
 
 static int rockchip_drm_gem_object_mmap_dma(struct drm_gem_object *obj,
-- 
1.9.1


WARNING: multiple messages have this Message-ID (diff)
From: Souptick Joarder <jrdr.linux@gmail.com>
To: akpm@linux-foundation.org, willy@infradead.org, mhocko@suse.com,
	hjc@rock-chips.com, heiko@sntech.de, airlied@linux.ie,
	linux@armlinux.org.uk, robin.murphy@arm.com
Cc: linux-mm@kvack.org, dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org
Subject: [PATCHv2 4/9] drm/rockchip/rockchip_drm_gem.c: Convert to use vm_insert_range
Date: Thu, 31 Jan 2019 08:40:40 +0530	[thread overview]
Message-ID: <20190131031040.GA2320@jordon-HP-15-Notebook-PC> (raw)

Convert to use vm_insert_range() to map range of kernel
memory to user vma.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index a8db758..c9e207f 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -221,26 +221,13 @@ static int rockchip_drm_gem_object_mmap_iommu(struct drm_gem_object *obj,
 					      struct vm_area_struct *vma)
 {
 	struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
-	unsigned int i, count = obj->size >> PAGE_SHIFT;
+	unsigned int count = obj->size >> PAGE_SHIFT;
 	unsigned long user_count = vma_pages(vma);
-	unsigned long uaddr = vma->vm_start;
-	unsigned long offset = vma->vm_pgoff;
-	unsigned long end = user_count + offset;
-	int ret;
 
 	if (user_count == 0)
 		return -ENXIO;
-	if (end > count)
-		return -ENXIO;
 
-	for (i = offset; i < end; i++) {
-		ret = vm_insert_page(vma, uaddr, rk_obj->pages[i]);
-		if (ret)
-			return ret;
-		uaddr += PAGE_SIZE;
-	}
-
-	return 0;
+	return vm_insert_range(vma, rk_obj->pages, count);
 }
 
 static int rockchip_drm_gem_object_mmap_dma(struct drm_gem_object *obj,
-- 
1.9.1


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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             reply	other threads:[~2019-01-31  3:06 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-31  3:10 Souptick Joarder [this message]
2019-01-31  3:10 ` [PATCHv2 4/9] drm/rockchip/rockchip_drm_gem.c: Convert to use vm_insert_range Souptick Joarder
2019-01-31 12:07 ` Heiko Stuebner
2019-01-31 12:07   ` Heiko Stuebner

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