1 files changed, 10 insertions, 49 deletions

diff --git a/arch/um/kernel/initrd.c b/arch/um/kernel/initrd.c
index 55cead809b18..99dba827461c 100644
--- a/arch/um/kernel/initrd.c
+++ b/arch/um/kernel/initrd.c
@@ -1,46 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
  */
 
 #include <linux/init.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
 #include <linux/initrd.h>
 #include <asm/types.h>
 #include <init.h>
 #include <os.h>
 
+#include "um_arch.h"
+
 /* Changed by uml_initrd_setup, which is a setup */
 static char *initrd __initdata = NULL;
-static int load_initrd(char *filename, void *buf, int size);
 
-static int __init read_initrd(void)
+int __init read_initrd(void)
 {
+	unsigned long long size;
 	void *area;
-	long long size;
-	int err;
-
-	if (initrd == NULL)
-		return 0;
-
-	err = os_file_size(initrd, &size);
-	if (err)
-		return 0;
-
-	/*
-	 * This is necessary because alloc_bootmem craps out if you
-	 * ask for no memory.
-	 */
-	if (size == 0) {
-		printk(KERN_ERR "\"%s\" is a zero-size initrd\n", initrd);
-		return 0;
-	}
 
-	area = alloc_bootmem(size);
-	if (area == NULL)
+	if (!initrd)
 		return 0;
 
-	if (load_initrd(initrd, area, size) == -1)
+	area = uml_load_file(initrd, &size);
+	if (!area)
 		return 0;
 
 	initrd_start = (unsigned long) area;
@@ -48,10 +32,9 @@ static int __init read_initrd(void)
 	return 0;
 }
 
-__uml_postsetup(read_initrd);
-
 static int __init uml_initrd_setup(char *line, int *add)
 {
+	*add = 0;
 	initrd = line;
 	return 0;
 }
@@ -61,25 +44,3 @@ __uml_setup("initrd=", uml_initrd_setup,
 "    This is used to boot UML from an initrd image.  The argument is the\n"
 "    name of the file containing the image.\n\n"
 );
-
-static int load_initrd(char *filename, void *buf, int size)
-{
-	int fd, n;
-
-	fd = os_open_file(filename, of_read(OPENFLAGS()), 0);
-	if (fd < 0) {
-		printk(KERN_ERR "Opening '%s' failed - err = %d\n", filename,
-		       -fd);
-		return -1;
-	}
-	n = os_read_file(fd, buf, size);
-	if (n != size) {
-		printk(KERN_ERR "Read of %d bytes from '%s' failed, "
-		       "err = %d\n", size,
-		       filename, -n);
-		return -1;
-	}
-
-	os_close_file(fd);
-	return 0;
-}