diff options
Diffstat (limited to 'system/lirc/patches/2.6.33.patch')
| -rw-r--r-- | system/lirc/patches/2.6.33.patch | 269 |
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 { |