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From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: VMware Graphics <linux-graphics-maintainer@vmware.com>,
	Roland Scheidegger <sroland@vmware.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	"Gustavo A. R. Silva" <gustavo@embeddedor.com>
Subject: [PATCH][next] drm/vmwgfx: Use struct_size() helper
Date: Wed, 17 Jun 2020 16:51:44 -0500	[thread overview]
Message-ID: <20200617215144.GA15547@embeddedor> (raw)

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
index 126f93c0b0b8..3914bfee0533 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
@@ -1969,7 +1969,7 @@ static int vmw_surface_dirty_alloc(struct vmw_resource *res)
 		num_mip = 1;
 
 	num_subres = num_layers * num_mip;
-	dirty_size = sizeof(*dirty) + num_subres * sizeof(dirty->boxes[0]);
+	dirty_size = struct_size(dirty, boxes, num_subres);
 	acc_size = ttm_round_pot(dirty_size);
 	ret = ttm_mem_global_alloc(vmw_mem_glob(res->dev_priv),
 				   acc_size, &ctx);
-- 
2.27.0

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WARNING: multiple messages have this Message-ID (diff)
From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: VMware Graphics <linux-graphics-maintainer@vmware.com>,
	Roland Scheidegger <sroland@vmware.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	"Gustavo A. R. Silva" <gustavo@embeddedor.com>
Subject: [PATCH][next] drm/vmwgfx: Use struct_size() helper
Date: Wed, 17 Jun 2020 16:51:44 -0500	[thread overview]
Message-ID: <20200617215144.GA15547@embeddedor> (raw)

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
index 126f93c0b0b8..3914bfee0533 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
@@ -1969,7 +1969,7 @@ static int vmw_surface_dirty_alloc(struct vmw_resource *res)
 		num_mip = 1;
 
 	num_subres = num_layers * num_mip;
-	dirty_size = sizeof(*dirty) + num_subres * sizeof(dirty->boxes[0]);
+	dirty_size = struct_size(dirty, boxes, num_subres);
 	acc_size = ttm_round_pot(dirty_size);
 	ret = ttm_mem_global_alloc(vmw_mem_glob(res->dev_priv),
 				   acc_size, &ctx);
-- 
2.27.0


             reply	other threads:[~2020-06-17 21:46 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-17 21:51 Gustavo A. R. Silva [this message]
2020-06-17 21:51 ` [PATCH][next] drm/vmwgfx: Use struct_size() helper Gustavo A. R. Silva
2020-06-22 15:50 ` Roland Scheidegger
2020-06-22 15:50   ` Roland Scheidegger

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