system/lirc: Patched to build on newer kernels and userspace.

1 files changed, 269 insertions, 0 deletions

diff --git a/system/lirc/patches/2.6.33.patch b/system/lirc/patches/2.6.33.patch
new file mode 100644
index 0000000000..92e50beb51
--- /dev/null
+++ b/system/lirc/patches/2.6.33.patch
@@ -0,0 +1,269 @@
+--- lirc-0.8.6.orig/drivers/lirc_dev/lirc_dev.h	2009/03/15 09:34:00	1.37
++++ lirc-0.8.6/drivers/lirc_dev/lirc_dev.h	2010/01/23 16:28:07	1.39
+@@ -4,7 +4,7 @@
+  * (L) by Artur Lipowski <alipowski@interia.pl>
+  *        This code is licensed under GNU GPL
+  *
+- * $Id: lirc_dev.h,v 1.37 2009/03/15 09:34:00 lirc Exp $
++ * $Id: lirc_dev.h,v 1.39 2010/01/23 16:28:07 lirc Exp $
+  *
+  */
+ 
+@@ -30,14 +30,19 @@
+ 
+ struct lirc_buffer {
+ 	wait_queue_head_t wait_poll;
+-	spinlock_t lock;
++	spinlock_t fifo_lock;
+ 	unsigned int chunk_size;
+ 	unsigned int size; /* in chunks */
+ 	/* Using chunks instead of bytes pretends to simplify boundary checking
+ 	 * And should allow for some performance fine tunning later */
+ #ifdef LIRC_HAVE_KFIFO
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
+ 	struct kfifo *fifo;
+ #else
++	struct kfifo fifo;
++	u8 fifo_initialized;
++#endif
++#else
+ 	unsigned int fill; /* in chunks */
+ 	int head, tail;    /* in chunks */
+ 	unsigned char *data;
+@@ -47,12 +52,12 @@
+ static inline void lirc_buffer_lock(struct lirc_buffer *buf,
+ 				    unsigned long *flags)
+ {
+-	spin_lock_irqsave(&buf->lock, *flags);
++	spin_lock_irqsave(&buf->fifo_lock, *flags);
+ }
+ static inline void lirc_buffer_unlock(struct lirc_buffer *buf,
+ 				      unsigned long *flags)
+ {
+-	spin_unlock_irqrestore(&buf->lock, *flags);
++	spin_unlock_irqrestore(&buf->fifo_lock, *flags);
+ }
+ static inline void _lirc_buffer_clear(struct lirc_buffer *buf)
+ {
+@@ -64,10 +69,21 @@
+ static inline void lirc_buffer_clear(struct lirc_buffer *buf)
+ {
+ #ifdef LIRC_HAVE_KFIFO
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
+ 	if (buf->fifo)
+ 		kfifo_reset(buf->fifo);
+ #else
+ 	unsigned long flags;
++
++	if (buf->fifo_initialized) {
++		spin_lock_irqsave(&buf->fifo_lock, flags);
++		kfifo_reset(&buf->fifo);
++		spin_unlock_irqrestore(&buf->fifo_lock, flags);
++	}
++#endif
++#else
++	unsigned long flags;
++
+ 	lirc_buffer_lock(buf, &flags);
+ 	_lirc_buffer_clear(buf);
+ 	lirc_buffer_unlock(buf, &flags);
+@@ -77,31 +93,47 @@
+ 				    unsigned int chunk_size,
+ 				    unsigned int size)
+ {
++	int ret = 0;
++
+ 	init_waitqueue_head(&buf->wait_poll);
+-	spin_lock_init(&buf->lock);
++	spin_lock_init(&buf->fifo_lock);
+ #ifndef LIRC_HAVE_KFIFO
+ 	_lirc_buffer_clear(buf);
+ #endif
+ 	buf->chunk_size = chunk_size;
+ 	buf->size = size;
+ #ifdef LIRC_HAVE_KFIFO
+-	buf->fifo = kfifo_alloc(size*chunk_size, GFP_KERNEL, &buf->lock);
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
++	buf->fifo = kfifo_alloc(size*chunk_size, GFP_KERNEL, &buf->fifo_lock);
+ 	if (!buf->fifo)
+ 		return -ENOMEM;
+ #else
++	ret = kfifo_alloc(&buf->fifo, size * chunk_size, GFP_KERNEL);
++	if (ret == 0)
++		buf->fifo_initialized = 1;
++#endif
++#else
+ 	buf->data = kmalloc(size*chunk_size, GFP_KERNEL);
+ 	if (buf->data == NULL)
+ 		return -ENOMEM;
+ 	memset(buf->data, 0, size*chunk_size);
+ #endif
+-	return 0;
++
++	return ret;
+ }
+ static inline void lirc_buffer_free(struct lirc_buffer *buf)
+ {
+ #ifdef LIRC_HAVE_KFIFO
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
+ 	if (buf->fifo)
+ 		kfifo_free(buf->fifo);
+ #else
++	if (buf->fifo_initialized) {
++		kfifo_free(&buf->fifo);
++		buf->fifo_initialized = 0;
++	}
++#endif
++#else
+ 	kfree(buf->data);
+ 	buf->data = NULL;
+ 	buf->head = 0;
+@@ -111,6 +143,25 @@
+ 	buf->size = 0;
+ #endif
+ }
++
++#ifdef LIRC_HAVE_KFIFO
++static inline int lirc_buffer_len(struct lirc_buffer *buf)
++{
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
++	return kfifo_len(buf->fifo);
++#else
++	int len;
++	unsigned long flags;
++
++	spin_lock_irqsave(&buf->fifo_lock, flags);
++	len = kfifo_len(&buf->fifo);
++	spin_unlock_irqrestore(&buf->fifo_lock, flags);
++
++	return len;
++#endif
++}
++#endif
++
+ #ifndef LIRC_HAVE_KFIFO
+ static inline int  _lirc_buffer_full(struct lirc_buffer *buf)
+ {
+@@ -120,7 +171,7 @@
+ static inline int  lirc_buffer_full(struct lirc_buffer *buf)
+ {
+ #ifdef LIRC_HAVE_KFIFO
+-	return kfifo_len(buf->fifo) == buf->size * buf->chunk_size;
++	return lirc_buffer_len(buf) == buf->size * buf->chunk_size;
+ #else
+ 	unsigned long flags;
+ 	int ret;
+@@ -139,7 +190,7 @@
+ static inline int  lirc_buffer_empty(struct lirc_buffer *buf)
+ {
+ #ifdef LIRC_HAVE_KFIFO
+-	return !kfifo_len(buf->fifo);
++	return !lirc_buffer_len(buf);
+ #else
+ 	unsigned long flags;
+ 	int ret;
+@@ -158,7 +209,7 @@
+ static inline int  lirc_buffer_available(struct lirc_buffer *buf)
+ {
+ #ifdef LIRC_HAVE_KFIFO
+-	return buf->size - (kfifo_len(buf->fifo) / buf->chunk_size);
++	return buf->size - (lirc_buffer_len(buf) / buf->chunk_size);
+ #else
+ 	unsigned long flags;
+ 	int ret;
+@@ -177,21 +228,30 @@
+ 	buf->fill -= 1;
+ }
+ #endif
+-static inline void lirc_buffer_read(struct lirc_buffer *buf,
+-				    unsigned char *dest)
++static inline unsigned int lirc_buffer_read(struct lirc_buffer *buf,
++					    unsigned char *dest)
+ {
++	unsigned int ret = 0;
++
+ #ifdef LIRC_HAVE_KFIFO
+-	if (kfifo_len(buf->fifo) >= buf->chunk_size)
+-		kfifo_get(buf->fifo, dest, buf->chunk_size);
++	if (lirc_buffer_len(buf) >= buf->chunk_size)
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
++		ret = kfifo_get(buf->fifo, dest, buf->chunk_size);
++#else
++		ret = kfifo_out_locked(&buf->fifo, dest, buf->chunk_size,
++				       &buf->fifo_lock);
++#endif
+ #else
+ 	unsigned long flags;
+ 	lirc_buffer_lock(buf, &flags);
+ 	_lirc_buffer_read_1(buf, dest);
+ 	lirc_buffer_unlock(buf, &flags);
+ #endif
++
++	return ret;
+ }
+ #ifndef LIRC_HAVE_KFIFO
+-static inline void _lirc_buffer_write_1(struct lirc_buffer *buf,
++static inline  _lirc_buffer_write_1(struct lirc_buffer *buf,
+ 				      unsigned char *orig)
+ {
+ 	memcpy(&buf->data[buf->tail*buf->chunk_size], orig, buf->chunk_size);
+@@ -199,17 +259,26 @@
+ 	buf->fill++;
+ }
+ #endif
+-static inline void lirc_buffer_write(struct lirc_buffer *buf,
+-				     unsigned char *orig)
++static inline unsigned int lirc_buffer_write(struct lirc_buffer *buf,
++					     unsigned char *orig)
+ {
++	unsigned int ret = 0;
++
+ #ifdef LIRC_HAVE_KFIFO
+-	kfifo_put(buf->fifo, orig, buf->chunk_size);
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
++	ret = kfifo_put(buf->fifo, orig, buf->chunk_size);
++#else
++	ret = kfifo_in_locked(&buf->fifo, orig, buf->chunk_size,
++			      &buf->fifo_lock);
++#endif
+ #else
+ 	unsigned long flags;
+ 	lirc_buffer_lock(buf, &flags);
+ 	_lirc_buffer_write_1(buf, orig);
+ 	lirc_buffer_unlock(buf, &flags);
+ #endif
++
++	return ret;
+ }
+ #ifndef LIRC_HAVE_KFIFO
+ static inline void _lirc_buffer_write_n(struct lirc_buffer *buf,
+@@ -234,17 +303,26 @@
+ 	buf->fill += count;
+ }
+ #endif
+-static inline void lirc_buffer_write_n(struct lirc_buffer *buf,
+-				       unsigned char *orig, int count)
++static inline unsigned int lirc_buffer_write_n(struct lirc_buffer *buf,
++					       unsigned char *orig, int count)
+ {
++	unsigned int ret = 0;
++
+ #ifdef LIRC_HAVE_KFIFO
+-	kfifo_put(buf->fifo, orig, count * buf->chunk_size);
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
++	ret = kfifo_put(buf->fifo, orig, count * buf->chunk_size);
++#else
++	ret = kfifo_in_locked(&buf->fifo, orig, count * buf->chunk_size,
++			      &buf->fifo_lock);
++#endif
+ #else
+ 	unsigned long flags;
+ 	lirc_buffer_lock(buf, &flags);
+ 	_lirc_buffer_write_n(buf, orig, count);
+ 	lirc_buffer_unlock(buf, &flags);
+ #endif
++
++	return ret;
+ }
+ 
+ struct lirc_driver {