From 95099d4622f8cb224d94e314c7a8e0df60b13f87 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:01 +0000
Subject: [PATCH] enable docker ppp

---
 kernel/drivers/video/fbdev/arcfb.c |   14 +++++++++-----
 1 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/kernel/drivers/video/fbdev/arcfb.c b/kernel/drivers/video/fbdev/arcfb.c
index 7e87d0d..1447324 100644
--- a/kernel/drivers/video/fbdev/arcfb.c
+++ b/kernel/drivers/video/fbdev/arcfb.c
@@ -419,6 +419,8 @@
 			schedule();
 			finish_wait(&arcfb_waitq, &wait);
 		}
+		fallthrough;
+
 		case FBIO_GETCONTROL2:
 		{
 			unsigned char ctl2;
@@ -489,7 +491,7 @@
 	return err;
 }
 
-static struct fb_ops arcfb_ops = {
+static const struct fb_ops arcfb_ops = {
 	.owner		= THIS_MODULE,
 	.fb_open	= arcfb_open,
 	.fb_read        = fb_sys_read,
@@ -542,10 +544,6 @@
 	par->cslut[1] = 0x06;
 	info->flags = FBINFO_FLAG_DEFAULT;
 	spin_lock_init(&par->lock);
-	retval = register_framebuffer(info);
-	if (retval < 0)
-		goto err1;
-	platform_set_drvdata(dev, info);
 	if (irq) {
 		par->irq = irq;
 		if (request_irq(par->irq, &arcfb_interrupt, IRQF_SHARED,
@@ -556,6 +554,10 @@
 			goto err1;
 		}
 	}
+	retval = register_framebuffer(info);
+	if (retval < 0)
+		goto err1;
+	platform_set_drvdata(dev, info);
 	fb_info(info, "Arc frame buffer device, using %dK of video memory\n",
 		videomemorysize >> 10);
 
@@ -591,6 +593,8 @@
 
 	if (info) {
 		unregister_framebuffer(info);
+		if (irq)
+			free_irq(((struct arcfb_par *)(info->par))->irq, info);
 		vfree((void __force *)info->screen_base);
 		framebuffer_release(info);
 	}

--
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