kernel: update yaffs code

Use the latest version of the yaffs code. Fetched from the
yaffs2 git tree and it is based on the following commit:

  commit bc76682d93955cfb33051beb503ad9f8a5450578
  Merge: 3a8580e ffa781d
  Author: Charles Manning <cdhmanning@gmail.com>
  Date:   Thu Jul 11 17:46:25 2013 +1200

      Merge branch 'master' of ssh://www.aleph1.co.uk/home/aleph1/git/yaffs2

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 39084

1 files changed, 0 insertions, 138 deletions

diff --git a/target/linux/generic/patches-3.10/502-yaffs-Switch-from-semaphores-to-mutexes.patch b/target/linux/generic/patches-3.10/502-yaffs-Switch-from-semaphores-to-mutexes.patch
deleted file mode 100644
index 8d1872e3fb..0000000000
--- a/target/linux/generic/patches-3.10/502-yaffs-Switch-from-semaphores-to-mutexes.patch
+++ /dev/null
@@ -1,138 +0,0 @@
-From c0c289363e84c53b5872f7c0c5069045096dca07 Mon Sep 17 00:00:00 2001
-From: Charles Manning <cdhmanning@gmail.com>
-Date: Wed, 3 Nov 2010 16:01:12 +1300
-Subject: [PATCH] yaffs: Switch from semaphores to mutexes
-
-commit 73c54aa8c1de3f61a4c211cd47431293a6092f18 upstream.
-
-Mutex is faster and init_MUTEX has been deprecated, so we'll just switch
-to mutexes.
-
-Signed-off-by: Charles Manning <cdhmanning@gmail.com>
----
- yaffs_linux.h     |    2 +-
- yaffs_vfs.c       |   24 ++++++++++++------------
- yaffs_vfs_multi.c |   26 +++++++++++++-------------
- 3 files changed, 26 insertions(+), 26 deletions(-)
-
---- a/fs/yaffs2/yaffs_linux.h
-+++ b/fs/yaffs2/yaffs_linux.h
-@@ -25,7 +25,7 @@ struct yaffs_LinuxContext {
- 	struct super_block * superBlock;
- 	struct task_struct *bgThread; /* Background thread for this device */
- 	int bgRunning;
--        struct semaphore grossLock;     /* Gross locking semaphore */
-+	struct mutex grossLock;	/* Gross locking mutex*/
- 	__u8 *spareBuffer;      /* For mtdif2 use. Don't know the size of the buffer
- 				 * at compile time so we have to allocate it.
- 				 */
---- a/fs/yaffs2/yaffs_vfs_glue.c
-+++ b/fs/yaffs2/yaffs_vfs_glue.c
-@@ -515,14 +515,14 @@ static unsigned yaffs_gc_control_callbac
- static void yaffs_gross_lock(yaffs_dev_t *dev)
- {
- 	T(YAFFS_TRACE_LOCK, (TSTR("yaffs locking %p\n"), current));
--	down(&(yaffs_dev_to_lc(dev)->grossLock));
-+	mutex_lock(&(yaffs_dev_to_lc(dev)->grossLock));
- 	T(YAFFS_TRACE_LOCK, (TSTR("yaffs locked %p\n"), current));
- }
- 
- static void yaffs_gross_unlock(yaffs_dev_t *dev)
- {
- 	T(YAFFS_TRACE_LOCK, (TSTR("yaffs unlocking %p\n"), current));
--	up(&(yaffs_dev_to_lc(dev)->grossLock));
-+	mutex_unlock(&(yaffs_dev_to_lc(dev)->grossLock));
- }
- 
- #ifdef YAFFS_COMPILE_EXPORTFS
-@@ -2542,7 +2542,7 @@ static void yaffs_read_inode(struct inod
- #endif
- 
- static YLIST_HEAD(yaffs_context_list);
--struct semaphore yaffs_context_lock;
-+struct mutex yaffs_context_lock;
- 
- static void yaffs_put_super(struct super_block *sb)
- {
-@@ -2568,9 +2568,9 @@ static void yaffs_put_super(struct super
- 
- 	yaffs_gross_unlock(dev);
- 
--	down(&yaffs_context_lock);
-+	mutex_lock(&yaffs_context_lock);
- 	ylist_del_init(&(yaffs_dev_to_lc(dev)->contextList));
--	up(&yaffs_context_lock);
-+	mutex_unlock(&yaffs_context_lock);
- 
- 	if (yaffs_dev_to_lc(dev)->spareBuffer) {
- 		YFREE(yaffs_dev_to_lc(dev)->spareBuffer);
-@@ -3016,7 +3016,7 @@ static struct super_block *yaffs_interna
- 	param->skip_checkpt_rd = options.skip_checkpoint_read;
- 	param->skip_checkpt_wr = options.skip_checkpoint_write;
- 
--	down(&yaffs_context_lock);
-+	mutex_lock(&yaffs_context_lock);
- 	/* Get a mount id */
- 	found = 0;
- 	for(mount_id=0; ! found; mount_id++){
-@@ -3030,13 +3030,13 @@ static struct super_block *yaffs_interna
- 	context->mount_id = mount_id;
- 
- 	ylist_add_tail(&(yaffs_dev_to_lc(dev)->contextList), &yaffs_context_list);
--	up(&yaffs_context_lock);
-+	mutex_unlock(&yaffs_context_lock);
- 
-         /* Directory search handling...*/
-         YINIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->searchContexts));
-         param->remove_obj_fn = yaffs_remove_obj_callback;
- 
--	init_MUTEX(&(yaffs_dev_to_lc(dev)->grossLock));
-+	mutex_init(&(yaffs_dev_to_lc(dev)->grossLock));
- 
- 	yaffs_gross_lock(dev);
- 
-@@ -3268,7 +3268,7 @@ static int yaffs_proc_read(char *page,
- 	else {
- 		step-=2;
- 		
--		down(&yaffs_context_lock);
-+		mutex_lock(&yaffs_context_lock);
- 
- 		/* Locate and print the Nth entry.  Order N-squared but N is small. */
- 		ylist_for_each(item, &yaffs_context_list) {
-@@ -3287,7 +3287,7 @@ static int yaffs_proc_read(char *page,
- 			
- 			break;
- 		}
--		up(&yaffs_context_lock);
-+		mutex_unlock(&yaffs_context_lock);
- 	}
- 
- 	return buf - page < count ? buf - page : count;
-@@ -3301,7 +3301,7 @@ static int yaffs_stats_proc_read(char *p
- 	char *buf = page;
- 	int n = 0;
- 
--	down(&yaffs_context_lock);
-+	mutex_lock(&yaffs_context_lock);
- 
- 	/* Locate and print the Nth entry.  Order N-squared but N is small. */
- 	ylist_for_each(item, &yaffs_context_list) {
-@@ -3317,7 +3317,7 @@ static int yaffs_stats_proc_read(char *p
- 				dev->bg_gcs, dev->oldest_dirty_gc_count,
- 				dev->n_obj, dev->n_tnodes);
- 	}
--	up(&yaffs_context_lock);
-+	mutex_unlock(&yaffs_context_lock);
- 
- 
- 	return buf - page < count ? buf - page : count;
-@@ -3494,7 +3494,7 @@ static int __init init_yaffs_fs(void)
- 
- 
- 
--	init_MUTEX(&yaffs_context_lock);
-+	mutex_init(&yaffs_context_lock);
- 
- 	/* Install the proc_fs entries */
- 	my_proc_entry = create_proc_entry("yaffs",