From 50a212ec906f7524620675f0c57357691c26c81f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 16 Oct 2024 01:20:19 +0000
Subject: [PATCH] 修改GPIO导出默认初始值
---
kernel/drivers/video/fbdev/tgafb.c | 23 ++++++++++++++---------
1 files changed, 14 insertions(+), 9 deletions(-)
diff --git a/kernel/drivers/video/fbdev/tgafb.c b/kernel/drivers/video/fbdev/tgafb.c
index 65ba992..98a2977 100644
--- a/kernel/drivers/video/fbdev/tgafb.c
+++ b/kernel/drivers/video/fbdev/tgafb.c
@@ -70,7 +70,7 @@
* Frame buffer operations
*/
-static struct fb_ops tgafb_ops = {
+static const struct fb_ops tgafb_ops = {
.owner = THIS_MODULE,
.fb_check_var = tgafb_check_var,
.fb_set_par = tgafb_set_par,
@@ -165,6 +165,9 @@
tgafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct tga_par *par = (struct tga_par *)info->par;
+
+ if (!var->pixclock)
+ return -EINVAL;
if (par->tga_type == TGA_TYPE_8PLANE) {
if (var->bits_per_pixel != 8)
@@ -989,8 +992,10 @@
/* We can fill 2k pixels per operation. Notice blocks that fit
the width of the screen so that we can take advantage of this
and fill more than one line per write. */
- if (width == line_length)
- width *= height, height = 1;
+ if (width == line_length) {
+ width *= height;
+ height = 1;
+ }
/* The write into the frame buffer must be aligned to 4 bytes,
but we are allowed to encode the offset within the word in
@@ -1171,8 +1176,10 @@
More than anything else, these control how we do copies. */
depos = dy * line_length + dx;
sepos = sy * line_length + sx;
- if (backward)
- depos += width, sepos += width;
+ if (backward) {
+ depos += width;
+ sepos += width;
+ }
/* Next copy full words at a time. */
n32 = width / 32;
@@ -1416,10 +1423,8 @@
/* Allocate the fb and par structures. */
info = framebuffer_alloc(sizeof(struct tga_par), dev);
- if (!info) {
- printk(KERN_ERR "tgafb: Cannot allocate memory\n");
+ if (!info)
return -ENOMEM;
- }
par = info->par;
dev_set_drvdata(dev, info);
@@ -1440,7 +1445,7 @@
}
/* Map the framebuffer. */
- mem_base = ioremap_nocache(bar0_start, bar0_len);
+ mem_base = ioremap(bar0_start, bar0_len);
if (!mem_base) {
printk(KERN_ERR "tgafb: Cannot map MMIO\n");
goto err1;
--
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