Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index f6d9182..6d0fd0e 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -26,13 +26,13 @@
 #include <linux/leds.h>
 #include <linux/device.h>
 #include <linux/slab.h>
+#include <linux/io.h>
 #include <linux/irq.h>
 #include <asm/bootinfo.h>
 #include <asm/idle.h>
 #include <asm/time.h>
 #include <asm/reboot.h>
 #include <asm/r4kcache.h>
-#include <asm/sections.h>
 #include <asm/setup.h>
 #include <asm/txx9/generic.h>
 #include <asm/txx9/pci.h>
@@ -342,11 +342,6 @@
 
 void __init prom_free_prom_memory(void)
 {
-	unsigned long saddr = PAGE_SIZE;
-	unsigned long eaddr = __pa_symbol(&_text);
-
-	if (saddr < eaddr)
-		free_init_pages("prom memory", saddr, eaddr);
 }
 
 const char *get_system_type(void)
@@ -960,12 +955,11 @@
 		goto exit_put;
 	err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
 	if (err) {
-		device_unregister(&dev->dev);
 		iounmap(dev->base);
-		kfree(dev);
+		device_unregister(&dev->dev);
 	}
 	return;
 exit_put:
+	iounmap(dev->base);
 	put_device(&dev->dev);
-	return;
 }