linux-kernel - [PATCH 2/3] media: v4l2: Use FIELD

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Message-ID: <1567687896-19996-3-git-send-email-zhongjiang@huawei.com>
Date:   Thu, 5 Sep 2019 20:51:35 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     <davem@...emloft.net>, <mareklindner@...mailbox.ch>,
        <mchehab@...nel.org>, <leon@...nel.org>
CC:     <dledford@...hat.com>, <sakari.ailus@...ux.intel.com>,
        <a@...table.cc>, <sw@...onwunderlich.de>,
        <linux-kernel@...r.kernel.org>, <linux-media@...r.kernel.org>,
        <zhongjiang@...wei.com>
Subject: [PATCH 2/3] media: v4l2: Use FIELD_SIZEOF directly

It's more clear  to use FIELD_SIZEOF instead of its implementation.

Signed-off-by: zhong jiang <zhongjiang@...wei.com>
---
 drivers/media/v4l2-core/v4l2-ioctl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 51b9127..eebea91 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -2637,7 +2637,7 @@ struct v4l2_ioctl_info {
 /* Zero struct from after the field to the end */
 #define INFO_FL_CLEAR(v4l2_struct, field)			\
 	((offsetof(struct v4l2_struct, field) +			\
-	  sizeof(((struct v4l2_struct *)0)->field)) << 16)
+	  FIELD_SIZEOF(struct v4l2_struct, field)) << 16)
 #define INFO_FL_CLEAR_MASK	(_IOC_SIZEMASK << 16)
 
 #define DEFINE_V4L_STUB_FUNC(_vidioc)				\
-- 
1.7.12.4