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Message-Id: <20250314060941.160048-1-oushixiong1025@163.com>
Date: Fri, 14 Mar 2025 14:09:41 +0800
From: oushixiong1025@....com
To: Simona Vetter <simona@...ll.ch>
Cc: Helge Deller <deller@....de>,
Thomas Zimmermann <tzimmermann@...e.de>,
Samuel Thibault <samuel.thibault@...-lyon.org>,
Zsolt Kajtar <soci@....rulez.org>,
Thomas Weißschuh <thomas.weissschuh@...utronix.de>,
linux-fbdev@...r.kernel.org,
dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
Shixiong Ou <oushixiong@...inos.cn>
Subject: [PATCH v2] fbcon: Use static attribute groups for sysfs entries
From: Shixiong Ou <oushixiong@...inos.cn>
Using device_create_with_groups() to simplify creation and removal.
Same as commit 1083a7be4504 ("tty: Use static attribute groups for
sysfs entries").
Signed-off-by: Shixiong Ou <oushixiong@...inos.cn>
---
drivers/video/fbdev/core/fbcon.c | 69 +++++++++-----------------------
1 file changed, 19 insertions(+), 50 deletions(-)
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index 07d127110ca4..1d792bd11063 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -160,7 +160,6 @@ static int info_idx = -1;
/* console rotation */
static int initial_rotation = -1;
-static int fbcon_has_sysfs;
static int margin_color;
static const struct consw fb_con;
@@ -3159,7 +3158,7 @@ static const struct consw fb_con = {
.con_debug_leave = fbcon_debug_leave,
};
-static ssize_t store_rotate(struct device *device,
+static ssize_t rotate_store(struct device *device,
struct device_attribute *attr, const char *buf,
size_t count)
{
@@ -3181,7 +3180,7 @@ static ssize_t store_rotate(struct device *device,
return count;
}
-static ssize_t store_rotate_all(struct device *device,
+static ssize_t rotate_all_store(struct device *device,
struct device_attribute *attr,const char *buf,
size_t count)
{
@@ -3203,7 +3202,7 @@ static ssize_t store_rotate_all(struct device *device,
return count;
}
-static ssize_t show_rotate(struct device *device,
+static ssize_t rotate_show(struct device *device,
struct device_attribute *attr,char *buf)
{
struct fb_info *info;
@@ -3222,7 +3221,7 @@ static ssize_t show_rotate(struct device *device,
return sysfs_emit(buf, "%d\n", rotate);
}
-static ssize_t show_cursor_blink(struct device *device,
+static ssize_t cursor_blink_show(struct device *device,
struct device_attribute *attr, char *buf)
{
struct fb_info *info;
@@ -3247,7 +3246,7 @@ static ssize_t show_cursor_blink(struct device *device,
return sysfs_emit(buf, "%d\n", blink);
}
-static ssize_t store_cursor_blink(struct device *device,
+static ssize_t cursor_blink_store(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
{
@@ -3281,35 +3280,18 @@ static ssize_t store_cursor_blink(struct device *device,
return count;
}
-static struct device_attribute device_attrs[] = {
- __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
- __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all),
- __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink,
- store_cursor_blink),
-};
-
-static int fbcon_init_device(void)
-{
- int i, error = 0;
+static DEVICE_ATTR_RW(rotate);
+static DEVICE_ATTR_WO(rotate_all);
+static DEVICE_ATTR_RW(cursor_blink);
- fbcon_has_sysfs = 1;
-
- for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
- error = device_create_file(fbcon_device, &device_attrs[i]);
-
- if (error)
- break;
- }
-
- if (error) {
- while (--i >= 0)
- device_remove_file(fbcon_device, &device_attrs[i]);
-
- fbcon_has_sysfs = 0;
- }
+static struct attribute *fbcon_device_attrs[] = {
+ &dev_attr_rotate.attr,
+ &dev_attr_rotate_all.attr,
+ &dev_attr_cursor_blink.attr,
+ NULL
+};
- return 0;
-}
+ATTRIBUTE_GROUPS(fbcon_device);
#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
static void fbcon_register_existing_fbs(struct work_struct *work)
@@ -3367,16 +3349,16 @@ void __init fb_console_init(void)
int i;
console_lock();
- fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL,
- "fbcon");
+ fbcon_device = device_create_with_groups(fb_class, NULL,
+ MKDEV(0, 0), NULL,
+ fbcon_device_groups, "fbcon");
if (IS_ERR(fbcon_device)) {
printk(KERN_WARNING "Unable to create device "
"for fbcon; errno = %ld\n",
PTR_ERR(fbcon_device));
fbcon_device = NULL;
- } else
- fbcon_init_device();
+ }
for (i = 0; i < MAX_NR_CONSOLES; i++)
con2fb_map[i] = -1;
@@ -3387,18 +3369,6 @@ void __init fb_console_init(void)
#ifdef MODULE
-static void __exit fbcon_deinit_device(void)
-{
- int i;
-
- if (fbcon_has_sysfs) {
- for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
- device_remove_file(fbcon_device, &device_attrs[i]);
-
- fbcon_has_sysfs = 0;
- }
-}
-
void __exit fb_console_exit(void)
{
#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
@@ -3411,7 +3381,6 @@ void __exit fb_console_exit(void)
#endif
console_lock();
- fbcon_deinit_device();
device_destroy(fb_class, MKDEV(0, 0));
do_unregister_con_driver(&fb_con);
--
2.25.1
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