6 files changed, 33 insertions, 61 deletions

diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h
index c38834de9ac..cb4c2ce8d44 100644
--- a/arch/xtensa/include/asm/unistd.h
+++ b/arch/xtensa/include/asm/unistd.h
@@ -4,14 +4,6 @@
 #define __ARCH_WANT_SYS_CLONE
 #include <uapi/asm/unistd.h>
 
-/*
- * "Conditional" syscalls
- *
- * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
- * but it doesn't work on all toolchains, so we just do it by hand
- */
-#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall");
-
 #define __ARCH_WANT_STAT64
 #define __ARCH_WANT_SYS_UTIME
 #define __ARCH_WANT_SYS_LLSEEK
diff --git a/arch/xtensa/include/uapi/asm/socket.h b/arch/xtensa/include/uapi/asm/socket.h
index 35905cb6e41..a8f44f50e65 100644
--- a/arch/xtensa/include/uapi/asm/socket.h
+++ b/arch/xtensa/include/uapi/asm/socket.h
@@ -83,4 +83,6 @@
 
 #define SO_LOCK_FILTER		44
 
+#define SO_SELECT_ERR_QUEUE	45
+
 #endif	/* _XTENSA_SOCKET_H */
diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c
index 5cd82e9f601..1c85323f01d 100644
--- a/arch/xtensa/kernel/process.c
+++ b/arch/xtensa/kernel/process.c
@@ -105,19 +105,9 @@ void coprocessor_flush_all(struct thread_info *ti)
 /*
  * Powermanagement idle function, if any is provided by the platform.
  */
-
-void cpu_idle(void)
+void arch_cpu_idle(void)
 {
-	local_irq_enable();
-
-	/* endless idle loop with no priority at all */
-	while (1) {
-		rcu_idle_enter();
-		while (!need_resched())
-			platform_idle();
-		rcu_idle_exit();
-		schedule_preempt_disabled();
-	}
+	platform_idle();
 }
 
 /*
diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c
index 923db5c1527..458186dab5d 100644
--- a/arch/xtensa/kernel/traps.c
+++ b/arch/xtensa/kernel/traps.c
@@ -383,6 +383,8 @@ void show_regs(struct pt_regs * regs)
 {
 	int i, wmask;
 
+	show_regs_print_info(KERN_DEFAULT);
+
 	wmask = regs->wmask & ~1;
 
 	for (i = 0; i < 16; i++) {
@@ -481,14 +483,6 @@ void show_stack(struct task_struct *task, unsigned long *sp)
 	show_trace(task, stack);
 }
 
-void dump_stack(void)
-{
-	show_stack(current, NULL);
-}
-
-EXPORT_SYMBOL(dump_stack);
-
-
 void show_code(unsigned int *pc)
 {
 	long i;
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 7a5156ffebb..bba125b4bb0 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -208,32 +208,17 @@ void __init mem_init(void)
 	       highmemsize >> 10);
 }
 
-void
-free_reserved_mem(void *start, void *end)
-{
-	for (; start < end; start += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(start));
-		init_page_count(virt_to_page(start));
-		free_page((unsigned long)start);
-		totalram_pages++;
-	}
-}
-
 #ifdef CONFIG_BLK_DEV_INITRD
 extern int initrd_is_mapped;
 
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
-	if (initrd_is_mapped) {
-		free_reserved_mem((void*)start, (void*)end);
-		printk ("Freeing initrd memory: %ldk freed\n",(end-start)>>10);
-	}
+	if (initrd_is_mapped)
+		free_reserved_area(start, end, 0, "initrd");
 }
 #endif
 
 void free_initmem(void)
 {
-	free_reserved_mem(__init_begin, __init_end);
-	printk("Freeing unused kernel memory: %zuk freed\n",
-	       (__init_end - __init_begin) >> 10);
+	free_initmem_default(0);
 }
diff --git a/arch/xtensa/platforms/iss/simdisk.c b/arch/xtensa/platforms/iss/simdisk.c
index f58ffc3b68a..0345f43d34f 100644
--- a/arch/xtensa/platforms/iss/simdisk.c
+++ b/arch/xtensa/platforms/iss/simdisk.c
@@ -139,13 +139,12 @@ static int simdisk_open(struct block_device *bdev, fmode_t mode)
 	return 0;
 }
 
-static int simdisk_release(struct gendisk *disk, fmode_t mode)
+static void simdisk_release(struct gendisk *disk, fmode_t mode)
 {
 	struct simdisk *dev = disk->private_data;
 	spin_lock(&dev->lock);
 	--dev->users;
 	spin_unlock(&dev->lock);
-	return 0;
 }
 
 static const struct block_device_operations simdisk_ops = {
@@ -214,20 +213,27 @@ static int simdisk_detach(struct simdisk *dev)
 	return err;
 }
 
-static int proc_read_simdisk(char *page, char **start, off_t off,
-		int count, int *eof, void *data)
+static ssize_t proc_read_simdisk(struct file *file, char __user *buf,
+			size_t size, loff_t *ppos)
 {
-	int len;
-	struct simdisk *dev = (struct simdisk *) data;
-	len = sprintf(page, "%s\n", dev->filename ? dev->filename : "");
-	return len;
+	struct simdisk *dev = PDE_DATA(file_inode(file));
+	char *s = dev->filename;
+	if (s) {
+		ssize_t n = simple_read_from_buffer(buf, size, ppos,
+							s, strlen(s));
+		if (n < 0)
+			return n;
+		buf += n;
+		size -= n;
+	}
+	return simple_read_from_buffer(buf, size, ppos, "\n", 1);
 }
 
-static int proc_write_simdisk(struct file *file, const char *buffer,
-		unsigned long count, void *data)
+static ssize_t proc_write_simdisk(struct file *file, const char __user *buf,
+			size_t count, loff_t *ppos)
 {
 	char *tmp = kmalloc(count + 1, GFP_KERNEL);
-	struct simdisk *dev = (struct simdisk *) data;
+	struct simdisk *dev = PDE_DATA(file_inode(file));
 	int err;
 
 	if (tmp == NULL)
@@ -256,6 +262,12 @@ out_free:
 	return err;
 }
 
+static const struct file_operations fops = {
+	.read = proc_read_simdisk,
+	.write = proc_write_simdisk,
+	.llseek = default_llseek,
+};
+
 static int __init simdisk_setup(struct simdisk *dev, int which,
 		struct proc_dir_entry *procdir)
 {
@@ -289,10 +301,7 @@ static int __init simdisk_setup(struct simdisk *dev, int which,
 	set_capacity(dev->gd, 0);
 	add_disk(dev->gd);
 
-	dev->procfile = create_proc_entry(tmp, 0644, procdir);
-	dev->procfile->data = dev;
-	dev->procfile->read_proc = proc_read_simdisk;
-	dev->procfile->write_proc = proc_write_simdisk;
+	dev->procfile = proc_create_data(tmp, 0644, procdir, &fops, dev);
 	return 0;
 
 out_alloc_disk: