linux-kernel - [PATCH AUTOSEL 4.19 32/60] drm/vmwgfx: Honor the sg list segment size limitation

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Message-Id: <20190627003616.20767-32-sashal@kernel.org>
Date:   Wed, 26 Jun 2019 20:35:47 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Thomas Hellstrom <thellstrom@...are.com>,
        Deepak Rawat <drawat@...are.com>,
        Sasha Levin <sashal@...nel.org>,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 4.19 32/60] drm/vmwgfx: Honor the sg list segment size limitation

From: Thomas Hellstrom <thellstrom@...are.com>

[ Upstream commit bde15555ba61c7f664f40fd3c6fdbdb63f784c9b ]

When building sg tables, honor the device sg list segment size limitation.

Signed-off-by: Thomas Hellstrom <thellstrom@...are.com>
Reviewed-by: Deepak Rawat <drawat@...are.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
index 31786b200afc..f388ad51e72b 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
@@ -448,11 +448,11 @@ static int vmw_ttm_map_dma(struct vmw_ttm_tt *vmw_tt)
 		if (unlikely(ret != 0))
 			return ret;
 
-		ret = sg_alloc_table_from_pages(&vmw_tt->sgt, vsgt->pages,
-						vsgt->num_pages, 0,
-						(unsigned long)
-						vsgt->num_pages << PAGE_SHIFT,
-						GFP_KERNEL);
+		ret = __sg_alloc_table_from_pages
+			(&vmw_tt->sgt, vsgt->pages, vsgt->num_pages, 0,
+			 (unsigned long) vsgt->num_pages << PAGE_SHIFT,
+			 dma_get_max_seg_size(dev_priv->dev->dev),
+			 GFP_KERNEL);
 		if (unlikely(ret != 0))
 			goto out_sg_alloc_fail;
 
-- 
2.20.1