linux-kernel - [PATCH] video: use kobj_to

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Date:   Tue, 22 Sep 2020 20:14:24 +0800
From:   Wang Qing <wangqing@...o.com>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Bernie Thompson <bernie@...gable.com>,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Cc:     Wang Qing <wangqing@...o.com>
Subject: [PATCH] video: use kobj_to_dev()

Use kobj_to_dev() instead of container_of()

Signed-off-by: Wang Qing <wangqing@...o.com>
---
 drivers/video/fbdev/aty/radeon_base.c | 4 ++--
 drivers/video/fbdev/udlfb.c           | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/video/fbdev/aty/radeon_base.c b/drivers/video/fbdev/aty/radeon_base.c
index 3fe509c..878c39a
--- a/drivers/video/fbdev/aty/radeon_base.c
+++ b/drivers/video/fbdev/aty/radeon_base.c
@@ -2200,7 +2200,7 @@ static ssize_t radeon_show_edid1(struct file *filp, struct kobject *kobj,
 				 struct bin_attribute *bin_attr,
 				 char *buf, loff_t off, size_t count)
 {
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct fb_info *info = dev_get_drvdata(dev);
         struct radeonfb_info *rinfo = info->par;
 
@@ -2212,7 +2212,7 @@ static ssize_t radeon_show_edid2(struct file *filp, struct kobject *kobj,
 				 struct bin_attribute *bin_attr,
 				 char *buf, loff_t off, size_t count)
 {
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct fb_info *info = dev_get_drvdata(dev);
         struct radeonfb_info *rinfo = info->par;
 
diff --git a/drivers/video/fbdev/udlfb.c b/drivers/video/fbdev/udlfb.c
index 5b014b4..f9b3c1c
--- a/drivers/video/fbdev/udlfb.c
+++ b/drivers/video/fbdev/udlfb.c
@@ -1457,7 +1457,7 @@ static ssize_t edid_show(
 			struct file *filp,
 			struct kobject *kobj, struct bin_attribute *a,
 			 char *buf, loff_t off, size_t count) {
-	struct device *fbdev = container_of(kobj, struct device, kobj);
+	struct device *fbdev = kobj_to_dev(kobj);
 	struct fb_info *fb_info = dev_get_drvdata(fbdev);
 	struct dlfb_data *dlfb = fb_info->par;
 
@@ -1479,7 +1479,7 @@ static ssize_t edid_store(
 			struct file *filp,
 			struct kobject *kobj, struct bin_attribute *a,
 			char *src, loff_t src_off, size_t src_size) {
-	struct device *fbdev = container_of(kobj, struct device, kobj);
+	struct device *fbdev = kobj_to_dev(kobj);
 	struct fb_info *fb_info = dev_get_drvdata(fbdev);
 	struct dlfb_data *dlfb = fb_info->par;
 	int ret;
-- 
2.7.4