add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/auxdisplay/ht16k33.c
..
..
@@ -74,7 +74,7 @@
74
74
 	struct ht16k33_fbdev fbdev;
75
75
 };
76
76
 
77
-static struct fb_fix_screeninfo ht16k33_fb_fix = {
77
+static const struct fb_fix_screeninfo ht16k33_fb_fix = {
78
78
 	.id		= DRIVER_NAME,
79
79
 	.type		= FB_TYPE_PACKED_PIXELS,
80
80
 	.visual		= FB_VISUAL_MONO10,
..
..
@@ -85,7 +85,7 @@
85
85
 	.accel		= FB_ACCEL_NONE,
86
86
 };
87
87
 
88
-static struct fb_var_screeninfo ht16k33_fb_var = {
88
+static const struct fb_var_screeninfo ht16k33_fb_var = {
89
89
 	.xres = HT16K33_MATRIX_LED_MAX_ROWS,
90
90
 	.yres = HT16K33_MATRIX_LED_MAX_COLS,
91
91
 	.xres_virtual = HT16K33_MATRIX_LED_MAX_ROWS,
..
..
@@ -231,12 +231,12 @@
231
231
 static int ht16k33_mmap(struct fb_info *info, struct vm_area_struct *vma)
232
232
 {
233
233
 	struct ht16k33_priv *priv = info->par;
234
+	struct page *pages = virt_to_page(priv->fbdev.buffer);
234
235
 
235
-	return vm_insert_page(vma, vma->vm_start,
236
-			      virt_to_page(priv->fbdev.buffer));
236
+	return vm_map_pages_zero(vma, &pages, 1);
237
237
 }
238
238
 
239
-static struct fb_ops ht16k33_fb_ops = {
239
+static const struct fb_ops ht16k33_fb_ops = {
240
240
 	.owner = THIS_MODULE,
241
241
 	.fb_read = fb_sys_read,
242
242
 	.fb_write = fb_sys_write,