From 2ec6a8249ac3332bd4f6219e64b70cc0c27885b8 Mon Sep 17 00:00:00 2001
From: Alexander Boettcher <alexander.boettcher@genode-labs.com>
Date: Tue, 12 Apr 2022 10:46:47 +0200
Subject: [PATCH] pc: intel display driver: avoid sysfs related hang

Issue #4450
---
 .../drivers/framebuffer/intel/pc/dummies.c    | 70 +++++++++++++++
 .../framebuffer/intel/pc/generated_dummies.c  | 88 -------------------
 2 files changed, 70 insertions(+), 88 deletions(-)

diff --git a/repos/pc/src/drivers/framebuffer/intel/pc/dummies.c b/repos/pc/src/drivers/framebuffer/intel/pc/dummies.c
index f23aaeb221..96817972cc 100644
--- a/repos/pc/src/drivers/framebuffer/intel/pc/dummies.c
+++ b/repos/pc/src/drivers/framebuffer/intel/pc/dummies.c
@@ -97,6 +97,12 @@ void kernfs_get(struct kernfs_node * kn)
 }
 
 
+void kernfs_put(struct kernfs_node * kn)
+{
+	lx_emul_trace(__func__);
+}
+
+
 int software_node_notify(struct device * dev,unsigned long action)
 {
 	lx_emul_trace(__func__);
@@ -178,6 +184,70 @@ int sysfs_create_groups(struct kobject * kobj,const struct attribute_group ** gr
 }
 
 
+void sysfs_remove_link(struct kobject * kobj,const char * name)
+{
+	lx_emul_trace(__func__);
+}
+
+
+void sysfs_remove_groups(struct kobject * kobj,const struct attribute_group ** groups)
+{
+	lx_emul_trace(__func__);
+}
+
+
+void sysfs_remove_dir(struct kobject * kobj)
+{
+	lx_emul_trace(__func__);
+}
+
+
+void sysfs_remove_bin_file(struct kobject * kobj,const struct bin_attribute * attr)
+{
+	lx_emul_trace(__func__);
+}
+
+
+bool sysfs_remove_file_self(struct kobject * kobj,const struct attribute * attr)
+{
+	lx_emul_trace(__func__);
+	return false;
+}
+
+
+void sysfs_remove_files(struct kobject * kobj,const struct attribute * const * ptr)
+{
+	lx_emul_trace(__func__);
+}
+
+
+void sysfs_delete_link(struct kobject * kobj,struct kobject * targ,const char * name)
+{
+	lx_emul_trace(__func__);
+}
+
+
+int sysfs_emit(char * buf,const char * fmt,...)
+{
+	lx_emul_trace(__func__);
+	return PAGE_SIZE;
+}
+
+
+int sysfs_emit_at(char * buf, int at, const char * fmt,...)
+{
+	lx_emul_trace(__func__);
+	return at > PAGE_SIZE ? PAGE_SIZE : PAGE_SIZE - at;
+}
+
+
+void sysfs_notify(struct kobject * kobj,const char * dir,const char * attr)
+{
+	lx_emul_trace(__func__);
+}
+
+
+
 void intel_engines_add_sysfs(struct drm_i915_private * i915)
 {
 	lx_emul_trace(__func__);
diff --git a/repos/pc/src/drivers/framebuffer/intel/pc/generated_dummies.c b/repos/pc/src/drivers/framebuffer/intel/pc/generated_dummies.c
index 324fd2256a..d31743c726 100644
--- a/repos/pc/src/drivers/framebuffer/intel/pc/generated_dummies.c
+++ b/repos/pc/src/drivers/framebuffer/intel/pc/generated_dummies.c
@@ -1517,14 +1517,6 @@ void kernel_fpu_end(void)
 struct kobject *kernel_kobj;
 
 
-#include <linux/kernfs.h>
-
-void kernfs_put(struct kernfs_node * kn)
-{
-	lx_emul_trace_and_stop(__func__);
-}
-
-
 #include <linux/fs.h>
 
 void kill_anon_super(struct super_block * sb)
@@ -2024,86 +2016,6 @@ void synchronize_srcu(struct srcu_struct * ssp)
 }
 
 
-#include <linux/sysfs.h>
-
-void sysfs_delete_link(struct kobject * kobj,struct kobject * targ,const char * name)
-{
-	lx_emul_trace_and_stop(__func__);
-}
-
-
-#include <linux/sysfs.h>
-
-int sysfs_emit(char * buf,const char * fmt,...)
-{
-	lx_emul_trace_and_stop(__func__);
-}
-
-
-#include <linux/sysfs.h>
-
-int sysfs_emit_at(char * buf,int at,const char * fmt,...)
-{
-	lx_emul_trace_and_stop(__func__);
-}
-
-
-#include <linux/sysfs.h>
-
-void sysfs_notify(struct kobject * kobj,const char * dir,const char * attr)
-{
-	lx_emul_trace_and_stop(__func__);
-}
-
-
-#include <linux/sysfs.h>
-
-void sysfs_remove_bin_file(struct kobject * kobj,const struct bin_attribute * attr)
-{
-	lx_emul_trace_and_stop(__func__);
-}
-
-
-#include <linux/sysfs.h>
-
-void sysfs_remove_dir(struct kobject * kobj)
-{
-	lx_emul_trace_and_stop(__func__);
-}
-
-
-#include <linux/sysfs.h>
-
-bool sysfs_remove_file_self(struct kobject * kobj,const struct attribute * attr)
-{
-	lx_emul_trace_and_stop(__func__);
-}
-
-
-#include <linux/sysfs.h>
-
-void sysfs_remove_files(struct kobject * kobj,const struct attribute * const * ptr)
-{
-	lx_emul_trace_and_stop(__func__);
-}
-
-
-#include <linux/sysfs.h>
-
-void sysfs_remove_groups(struct kobject * kobj,const struct attribute_group ** groups)
-{
-	lx_emul_trace_and_stop(__func__);
-}
-
-
-#include <linux/sysfs.h>
-
-void sysfs_remove_link(struct kobject * kobj,const char * name)
-{
-	lx_emul_trace_and_stop(__func__);
-}
-
-
 #include <linux/task_work.h>
 
 int task_work_add(struct task_struct * task,struct callback_head * work,enum task_work_notify_mode notify)