From 7a02264ca9ec5409e22b9d41f32b431d08eadbce Mon Sep 17 00:00:00 2001 From: Pawel Osciak Date: Wed, 17 Mar 2010 04:01:04 -0300 Subject: [PATCH] V4L/DVB: v4l: videobuf: code cleanup Make videobuf pass checkpatch; minor code cleanups. Signed-off-by: Pawel Osciak Reviewed-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/videobuf-core.c | 116 +++++++------- drivers/media/video/videobuf-dma-sg.c | 276 +++++++++++++++++---------------- drivers/media/video/videobuf-vmalloc.c | 112 +++++++------ include/media/videobuf-core.h | 10 +- include/media/videobuf-dma-sg.h | 27 ++-- include/media/videobuf-vmalloc.h | 12 +- 6 files changed, 272 insertions(+), 281 deletions(-) diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c index 471178e17017..63d7043502d6 100644 --- a/drivers/media/video/videobuf-core.c +++ b/drivers/media/video/videobuf-core.c @@ -24,10 +24,15 @@ #include #define MAGIC_BUFFER 0x20070728 -#define MAGIC_CHECK(is, should) do { \ - if (unlikely((is) != (should))) { \ - printk(KERN_ERR "magic mismatch: %x (expected %x)\n", is, should); \ - BUG(); } } while (0) +#define MAGIC_CHECK(is, should) \ + do { \ + if (unlikely((is) != (should))) { \ + printk(KERN_ERR \ + "magic mismatch: %x (expected %x)\n", \ + is, should); \ + BUG(); \ + } \ + } while (0) static int debug; module_param(debug, int, 0644); @@ -36,9 +41,11 @@ MODULE_DESCRIPTION("helper module to manage video4linux buffers"); MODULE_AUTHOR("Mauro Carvalho Chehab "); MODULE_LICENSE("GPL"); -#define dprintk(level, fmt, arg...) do { \ - if (debug >= level) \ - printk(KERN_DEBUG "vbuf: " fmt , ## arg); } while (0) +#define dprintk(level, fmt, arg...) \ + do { \ + if (debug >= level) \ + printk(KERN_DEBUG "vbuf: " fmt, ## arg); \ + } while (0) /* --------------------------------------------------------------------- */ @@ -57,14 +64,14 @@ void *videobuf_alloc(struct videobuf_queue *q) } vb = q->int_ops->alloc(q->msize); - if (NULL != vb) { init_waitqueue_head(&vb->done); - vb->magic = MAGIC_BUFFER; + vb->magic = MAGIC_BUFFER; } return vb; } +EXPORT_SYMBOL_GPL(videobuf_alloc); #define WAITON_CONDITION (vb->state != VIDEOBUF_ACTIVE &&\ vb->state != VIDEOBUF_QUEUED) @@ -86,6 +93,7 @@ int videobuf_waiton(struct videobuf_buffer *vb, int non_blocking, int intr) return 0; } +EXPORT_SYMBOL_GPL(videobuf_waiton); int videobuf_iolock(struct videobuf_queue *q, struct videobuf_buffer *vb, struct v4l2_framebuffer *fbuf) @@ -95,9 +103,10 @@ int videobuf_iolock(struct videobuf_queue *q, struct videobuf_buffer *vb, return CALL(q, iolock, q, vb, fbuf); } +EXPORT_SYMBOL_GPL(videobuf_iolock); -void *videobuf_queue_to_vmalloc (struct videobuf_queue *q, - struct videobuf_buffer *buf) +void *videobuf_queue_to_vmalloc(struct videobuf_queue *q, + struct videobuf_buffer *buf) { if (q->int_ops->vmalloc) return q->int_ops->vmalloc(buf); @@ -146,6 +155,7 @@ void videobuf_queue_core_init(struct videobuf_queue *q, init_waitqueue_head(&q->wait); INIT_LIST_HEAD(&q->stream); } +EXPORT_SYMBOL_GPL(videobuf_queue_core_init); /* Locking: Only usage in bttv unsafe find way to remove */ int videobuf_queue_is_busy(struct videobuf_queue *q) @@ -184,6 +194,7 @@ int videobuf_queue_is_busy(struct videobuf_queue *q) } return 0; } +EXPORT_SYMBOL_GPL(videobuf_queue_is_busy); /* Locking: Caller holds q->vb_lock */ void videobuf_queue_cancel(struct videobuf_queue *q) @@ -216,6 +227,7 @@ void videobuf_queue_cancel(struct videobuf_queue *q) } INIT_LIST_HEAD(&q->stream); } +EXPORT_SYMBOL_GPL(videobuf_queue_cancel); /* --------------------------------------------------------------------- */ @@ -237,6 +249,7 @@ enum v4l2_field videobuf_next_field(struct videobuf_queue *q) } return field; } +EXPORT_SYMBOL_GPL(videobuf_next_field); /* Locking: Caller holds q->vb_lock */ static void videobuf_status(struct videobuf_queue *q, struct v4l2_buffer *b, @@ -305,8 +318,7 @@ static int __videobuf_mmap_free(struct videobuf_queue *q) MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS); - - rc = CALL(q, mmap_free, q); + rc = CALL(q, mmap_free, q); q->is_mmapped = 0; @@ -332,6 +344,7 @@ int videobuf_mmap_free(struct videobuf_queue *q) mutex_unlock(&q->vb_lock); return ret; } +EXPORT_SYMBOL_GPL(videobuf_mmap_free); /* Locking: Caller holds q->vb_lock */ int __videobuf_mmap_setup(struct videobuf_queue *q, @@ -351,7 +364,7 @@ int __videobuf_mmap_setup(struct videobuf_queue *q, for (i = 0; i < bcount; i++) { q->bufs[i] = videobuf_alloc(q); - if (q->bufs[i] == NULL) + if (NULL == q->bufs[i]) break; q->bufs[i]->i = i; @@ -372,11 +385,11 @@ int __videobuf_mmap_setup(struct videobuf_queue *q, if (!i) return -ENOMEM; - dprintk(1, "mmap setup: %d buffers, %d bytes each\n", - i, bsize); + dprintk(1, "mmap setup: %d buffers, %d bytes each\n", i, bsize); return i; } +EXPORT_SYMBOL_GPL(__videobuf_mmap_setup); int videobuf_mmap_setup(struct videobuf_queue *q, unsigned int bcount, unsigned int bsize, @@ -388,6 +401,7 @@ int videobuf_mmap_setup(struct videobuf_queue *q, mutex_unlock(&q->vb_lock); return ret; } +EXPORT_SYMBOL_GPL(videobuf_mmap_setup); int videobuf_reqbufs(struct videobuf_queue *q, struct v4l2_requestbuffers *req) @@ -432,7 +446,7 @@ int videobuf_reqbufs(struct videobuf_queue *q, q->ops->buf_setup(q, &count, &size); dprintk(1, "reqbufs: bufs=%d, size=0x%x [%u pages total]\n", count, size, - (unsigned int)((count*PAGE_ALIGN(size))>>PAGE_SHIFT) ); + (unsigned int)((count * PAGE_ALIGN(size)) >> PAGE_SHIFT)); retval = __videobuf_mmap_setup(q, count, size, req->memory); if (retval < 0) { @@ -447,6 +461,7 @@ int videobuf_reqbufs(struct videobuf_queue *q, mutex_unlock(&q->vb_lock); return retval; } +EXPORT_SYMBOL_GPL(videobuf_reqbufs); int videobuf_querybuf(struct videobuf_queue *q, struct v4l2_buffer *b) { @@ -473,9 +488,9 @@ done: mutex_unlock(&q->vb_lock); return ret; } +EXPORT_SYMBOL_GPL(videobuf_querybuf); -int videobuf_qbuf(struct videobuf_queue *q, - struct v4l2_buffer *b) +int videobuf_qbuf(struct videobuf_queue *q, struct v4l2_buffer *b) { struct videobuf_buffer *buf; enum v4l2_field field; @@ -571,7 +586,7 @@ int videobuf_qbuf(struct videobuf_queue *q, retval = 0; wake_up_interruptible_sync(&q->wait); - done: +done: mutex_unlock(&q->vb_lock); if (b->memory == V4L2_MEMORY_MMAP) @@ -579,7 +594,7 @@ int videobuf_qbuf(struct videobuf_queue *q, return retval; } - +EXPORT_SYMBOL_GPL(videobuf_qbuf); /* Locking: Caller holds q->vb_lock */ static int stream_next_buffer_check_queue(struct videobuf_queue *q, int noblock) @@ -624,7 +639,6 @@ done: return retval; } - /* Locking: Caller holds q->vb_lock */ static int stream_next_buffer(struct videobuf_queue *q, struct videobuf_buffer **vb, int nonblocking) @@ -647,7 +661,7 @@ done: } int videobuf_dqbuf(struct videobuf_queue *q, - struct v4l2_buffer *b, int nonblocking) + struct v4l2_buffer *b, int nonblocking) { struct videobuf_buffer *buf = NULL; int retval; @@ -682,11 +696,11 @@ int videobuf_dqbuf(struct videobuf_queue *q, list_del(&buf->stream); memset(b, 0, sizeof(*b)); videobuf_status(q, b, buf, q->type); - - done: +done: mutex_unlock(&q->vb_lock); return retval; } +EXPORT_SYMBOL_GPL(videobuf_dqbuf); int videobuf_streamon(struct videobuf_queue *q) { @@ -709,10 +723,11 @@ int videobuf_streamon(struct videobuf_queue *q) spin_unlock_irqrestore(q->irqlock, flags); wake_up_interruptible_sync(&q->wait); - done: +done: mutex_unlock(&q->vb_lock); return retval; } +EXPORT_SYMBOL_GPL(videobuf_streamon); /* Locking: Caller holds q->vb_lock */ static int __videobuf_streamoff(struct videobuf_queue *q) @@ -735,6 +750,7 @@ int videobuf_streamoff(struct videobuf_queue *q) return retval; } +EXPORT_SYMBOL_GPL(videobuf_streamoff); /* Locking: Caller holds q->vb_lock */ static ssize_t videobuf_read_zerocopy(struct videobuf_queue *q, @@ -774,7 +790,7 @@ static ssize_t videobuf_read_zerocopy(struct videobuf_queue *q, retval = q->read_buf->size; } - done: +done: /* cleanup */ q->ops->buf_release(q, q->read_buf); kfree(q->read_buf); @@ -862,10 +878,11 @@ ssize_t videobuf_read_one(struct videobuf_queue *q, q->read_buf = NULL; } - done: +done: mutex_unlock(&q->vb_lock); return retval; } +EXPORT_SYMBOL_GPL(videobuf_read_one); /* Locking: Caller holds q->vb_lock */ static int __videobuf_read_start(struct videobuf_queue *q) @@ -917,7 +934,6 @@ static void __videobuf_read_stop(struct videobuf_queue *q) q->bufs[i] = NULL; } q->read_buf = NULL; - } int videobuf_read_start(struct videobuf_queue *q) @@ -930,6 +946,7 @@ int videobuf_read_start(struct videobuf_queue *q) return rc; } +EXPORT_SYMBOL_GPL(videobuf_read_start); void videobuf_read_stop(struct videobuf_queue *q) { @@ -937,6 +954,7 @@ void videobuf_read_stop(struct videobuf_queue *q) __videobuf_read_stop(q); mutex_unlock(&q->vb_lock); } +EXPORT_SYMBOL_GPL(videobuf_read_stop); void videobuf_stop(struct videobuf_queue *q) { @@ -950,7 +968,7 @@ void videobuf_stop(struct videobuf_queue *q) mutex_unlock(&q->vb_lock); } - +EXPORT_SYMBOL_GPL(videobuf_stop); ssize_t videobuf_read_stream(struct videobuf_queue *q, char __user *data, size_t count, loff_t *ppos, @@ -1019,10 +1037,11 @@ ssize_t videobuf_read_stream(struct videobuf_queue *q, break; } - done: +done: mutex_unlock(&q->vb_lock); return retval; } +EXPORT_SYMBOL_GPL(videobuf_read_stream); unsigned int videobuf_poll_stream(struct file *file, struct videobuf_queue *q, @@ -1062,9 +1081,9 @@ unsigned int videobuf_poll_stream(struct file *file, mutex_unlock(&q->vb_lock); return rc; } +EXPORT_SYMBOL_GPL(videobuf_poll_stream); -int videobuf_mmap_mapper(struct videobuf_queue *q, - struct vm_area_struct *vma) +int videobuf_mmap_mapper(struct videobuf_queue *q, struct vm_area_struct *vma) { int retval; @@ -1077,6 +1096,7 @@ int videobuf_mmap_mapper(struct videobuf_queue *q, return retval; } +EXPORT_SYMBOL_GPL(videobuf_mmap_mapper); #ifdef CONFIG_VIDEO_V4L1_COMPAT int videobuf_cgmbuf(struct videobuf_queue *q, @@ -1107,33 +1127,3 @@ int videobuf_cgmbuf(struct videobuf_queue *q, EXPORT_SYMBOL_GPL(videobuf_cgmbuf); #endif -/* --------------------------------------------------------------------- */ - -EXPORT_SYMBOL_GPL(videobuf_waiton); -EXPORT_SYMBOL_GPL(videobuf_iolock); - -EXPORT_SYMBOL_GPL(videobuf_alloc); - -EXPORT_SYMBOL_GPL(videobuf_queue_core_init); -EXPORT_SYMBOL_GPL(videobuf_queue_cancel); -EXPORT_SYMBOL_GPL(videobuf_queue_is_busy); - -EXPORT_SYMBOL_GPL(videobuf_next_field); -EXPORT_SYMBOL_GPL(videobuf_reqbufs); -EXPORT_SYMBOL_GPL(videobuf_querybuf); -EXPORT_SYMBOL_GPL(videobuf_qbuf); -EXPORT_SYMBOL_GPL(videobuf_dqbuf); -EXPORT_SYMBOL_GPL(videobuf_streamon); -EXPORT_SYMBOL_GPL(videobuf_streamoff); - -EXPORT_SYMBOL_GPL(videobuf_read_start); -EXPORT_SYMBOL_GPL(videobuf_read_stop); -EXPORT_SYMBOL_GPL(videobuf_stop); -EXPORT_SYMBOL_GPL(videobuf_read_stream); -EXPORT_SYMBOL_GPL(videobuf_read_one); -EXPORT_SYMBOL_GPL(videobuf_poll_stream); - -EXPORT_SYMBOL_GPL(__videobuf_mmap_setup); -EXPORT_SYMBOL_GPL(videobuf_mmap_setup); -EXPORT_SYMBOL_GPL(videobuf_mmap_free); -EXPORT_SYMBOL_GPL(videobuf_mmap_mapper); diff --git a/drivers/media/video/videobuf-dma-sg.c b/drivers/media/video/videobuf-dma-sg.c index fcd045e7a1c1..c9d946a388e8 100644 --- a/drivers/media/video/videobuf-dma-sg.c +++ b/drivers/media/video/videobuf-dma-sg.c @@ -37,8 +37,12 @@ #define MAGIC_DMABUF 0x19721112 #define MAGIC_SG_MEM 0x17890714 -#define MAGIC_CHECK(is,should) if (unlikely((is) != (should))) \ - { printk(KERN_ERR "magic mismatch: %x (expected %x)\n",is,should); BUG(); } +#define MAGIC_CHECK(is, should) \ + if (unlikely((is) != (should))) { \ + printk(KERN_ERR "magic mismatch: %x (expected %x)\n", \ + is, should); \ + BUG(); \ + } static int debug; module_param(debug, int, 0644); @@ -47,13 +51,13 @@ MODULE_DESCRIPTION("helper module to manage video4linux dma sg buffers"); MODULE_AUTHOR("Mauro Carvalho Chehab "); MODULE_LICENSE("GPL"); -#define dprintk(level, fmt, arg...) if (debug >= level) \ - printk(KERN_DEBUG "vbuf-sg: " fmt , ## arg) +#define dprintk(level, fmt, arg...) \ + if (debug >= level) \ + printk(KERN_DEBUG "vbuf-sg: " fmt , ## arg) /* --------------------------------------------------------------------- */ -struct scatterlist* -videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages) +struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages) { struct scatterlist *sglist; struct page *pg; @@ -73,13 +77,14 @@ videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages) } return sglist; - err: +err: vfree(sglist); return NULL; } +EXPORT_SYMBOL_GPL(videobuf_vmalloc_to_sg); -struct scatterlist* -videobuf_pages_to_sg(struct page **pages, int nr_pages, int offset) +struct scatterlist *videobuf_pages_to_sg(struct page **pages, int nr_pages, + int offset) { struct scatterlist *sglist; int i; @@ -104,20 +109,20 @@ videobuf_pages_to_sg(struct page **pages, int nr_pages, int offset) } return sglist; - nopage: - dprintk(2,"sgl: oops - no page\n"); +nopage: + dprintk(2, "sgl: oops - no page\n"); vfree(sglist); return NULL; - highmem: - dprintk(2,"sgl: oops - highmem page\n"); +highmem: + dprintk(2, "sgl: oops - highmem page\n"); vfree(sglist); return NULL; } /* --------------------------------------------------------------------- */ -struct videobuf_dmabuf *videobuf_to_dma (struct videobuf_buffer *buf) +struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf) { struct videobuf_dma_sg_memory *mem = buf->priv; BUG_ON(!mem); @@ -126,17 +131,19 @@ struct videobuf_dmabuf *videobuf_to_dma (struct videobuf_buffer *buf) return &mem->dma; } +EXPORT_SYMBOL_GPL(videobuf_to_dma); void videobuf_dma_init(struct videobuf_dmabuf *dma) { - memset(dma,0,sizeof(*dma)); + memset(dma, 0, sizeof(*dma)); dma->magic = MAGIC_DMABUF; } +EXPORT_SYMBOL_GPL(videobuf_dma_init); static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma, int direction, unsigned long data, unsigned long size) { - unsigned long first,last; + unsigned long first, last; int err, rw = 0; dma->direction = direction; @@ -155,21 +162,21 @@ static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma, last = ((data+size-1) & PAGE_MASK) >> PAGE_SHIFT; dma->offset = data & ~PAGE_MASK; dma->nr_pages = last-first+1; - dma->pages = kmalloc(dma->nr_pages * sizeof(struct page*), - GFP_KERNEL); + dma->pages = kmalloc(dma->nr_pages * sizeof(struct page *), GFP_KERNEL); if (NULL == dma->pages) return -ENOMEM; - dprintk(1,"init user [0x%lx+0x%lx => %d pages]\n", - data,size,dma->nr_pages); - err = get_user_pages(current,current->mm, + dprintk(1, "init user [0x%lx+0x%lx => %d pages]\n", + data, size, dma->nr_pages); + + err = get_user_pages(current, current->mm, data & PAGE_MASK, dma->nr_pages, rw == READ, 1, /* force */ dma->pages, NULL); if (err != dma->nr_pages) { dma->nr_pages = (err >= 0) ? err : 0; - dprintk(1,"get_user_pages: err=%d [%d]\n",err,dma->nr_pages); + dprintk(1, "get_user_pages: err=%d [%d]\n", err, dma->nr_pages); return err < 0 ? err : -EINVAL; } return 0; @@ -179,48 +186,58 @@ int videobuf_dma_init_user(struct videobuf_dmabuf *dma, int direction, unsigned long data, unsigned long size) { int ret; + down_read(¤t->mm->mmap_sem); ret = videobuf_dma_init_user_locked(dma, direction, data, size); up_read(¤t->mm->mmap_sem); return ret; } +EXPORT_SYMBOL_GPL(videobuf_dma_init_user); int videobuf_dma_init_kernel(struct videobuf_dmabuf *dma, int direction, int nr_pages) { - dprintk(1,"init kernel [%d pages]\n",nr_pages); + dprintk(1, "init kernel [%d pages]\n", nr_pages); + dma->direction = direction; dma->vmalloc = vmalloc_32(nr_pages << PAGE_SHIFT); if (NULL == dma->vmalloc) { - dprintk(1,"vmalloc_32(%d pages) failed\n",nr_pages); + dprintk(1, "vmalloc_32(%d pages) failed\n", nr_pages); return -ENOMEM; } - dprintk(1,"vmalloc is at addr 0x%08lx, size=%d\n", + + dprintk(1, "vmalloc is at addr 0x%08lx, size=%d\n", (unsigned long)dma->vmalloc, nr_pages << PAGE_SHIFT); - memset(dma->vmalloc,0,nr_pages << PAGE_SHIFT); + + memset(dma->vmalloc, 0, nr_pages << PAGE_SHIFT); dma->nr_pages = nr_pages; + return 0; } +EXPORT_SYMBOL_GPL(videobuf_dma_init_kernel); int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction, dma_addr_t addr, int nr_pages) { - dprintk(1,"init overlay [%d pages @ bus 0x%lx]\n", - nr_pages,(unsigned long)addr); + dprintk(1, "init overlay [%d pages @ bus 0x%lx]\n", + nr_pages, (unsigned long)addr); dma->direction = direction; + if (0 == addr) return -EINVAL; dma->bus_addr = addr; dma->nr_pages = nr_pages; + return 0; } +EXPORT_SYMBOL_GPL(videobuf_dma_init_overlay); -int videobuf_dma_map(struct videobuf_queue* q, struct videobuf_dmabuf *dma) +int videobuf_dma_map(struct videobuf_queue *q, struct videobuf_dmabuf *dma) { - MAGIC_CHECK(dma->magic,MAGIC_DMABUF); + MAGIC_CHECK(dma->magic, MAGIC_DMABUF); BUG_ON(0 == dma->nr_pages); if (dma->pages) { @@ -228,20 +245,21 @@ int videobuf_dma_map(struct videobuf_queue* q, struct videobuf_dmabuf *dma) dma->offset); } if (dma->vmalloc) { - dma->sglist = videobuf_vmalloc_to_sg - (dma->vmalloc,dma->nr_pages); + dma->sglist = videobuf_vmalloc_to_sg(dma->vmalloc, + dma->nr_pages); } if (dma->bus_addr) { dma->sglist = vmalloc(sizeof(*dma->sglist)); if (NULL != dma->sglist) { - dma->sglen = 1; - sg_dma_address(&dma->sglist[0]) = dma->bus_addr & PAGE_MASK; - dma->sglist[0].offset = dma->bus_addr & ~PAGE_MASK; - sg_dma_len(&dma->sglist[0]) = dma->nr_pages * PAGE_SIZE; + dma->sglen = 1; + sg_dma_address(&dma->sglist[0]) = dma->bus_addr + & PAGE_MASK; + dma->sglist[0].offset = dma->bus_addr & ~PAGE_MASK; + sg_dma_len(&dma->sglist[0]) = dma->nr_pages * PAGE_SIZE; } } if (NULL == dma->sglist) { - dprintk(1,"scatterlist is NULL\n"); + dprintk(1, "scatterlist is NULL\n"); return -ENOMEM; } if (!dma->bus_addr) { @@ -249,15 +267,17 @@ int videobuf_dma_map(struct videobuf_queue* q, struct videobuf_dmabuf *dma) dma->nr_pages, dma->direction); if (0 == dma->sglen) { printk(KERN_WARNING - "%s: videobuf_map_sg failed\n",__func__); + "%s: videobuf_map_sg failed\n", __func__); vfree(dma->sglist); dma->sglist = NULL; dma->sglen = 0; return -ENOMEM; } } + return 0; } +EXPORT_SYMBOL_GPL(videobuf_dma_map); int videobuf_dma_sync(struct videobuf_queue *q, struct videobuf_dmabuf *dma) { @@ -265,12 +285,15 @@ int videobuf_dma_sync(struct videobuf_queue *q, struct videobuf_dmabuf *dma) BUG_ON(!dma->sglen); dma_sync_sg_for_cpu(q->dev, dma->sglist, dma->nr_pages, dma->direction); + return 0; } +EXPORT_SYMBOL_GPL(videobuf_dma_sync); -int videobuf_dma_unmap(struct videobuf_queue* q,struct videobuf_dmabuf *dma) +int videobuf_dma_unmap(struct videobuf_queue *q, struct videobuf_dmabuf *dma) { MAGIC_CHECK(dma->magic, MAGIC_DMABUF); + if (!dma->sglen) return 0; @@ -279,17 +302,19 @@ int videobuf_dma_unmap(struct videobuf_queue* q,struct videobuf_dmabuf *dma) vfree(dma->sglist); dma->sglist = NULL; dma->sglen = 0; + return 0; } +EXPORT_SYMBOL_GPL(videobuf_dma_unmap); int videobuf_dma_free(struct videobuf_dmabuf *dma) { - MAGIC_CHECK(dma->magic,MAGIC_DMABUF); + int i; + MAGIC_CHECK(dma->magic, MAGIC_DMABUF); BUG_ON(dma->sglen); if (dma->pages) { - int i; - for (i=0; i < dma->nr_pages; i++) + for (i = 0; i < dma->nr_pages; i++) page_cache_release(dma->pages[i]); kfree(dma->pages); dma->pages = NULL; @@ -298,12 +323,13 @@ int videobuf_dma_free(struct videobuf_dmabuf *dma) vfree(dma->vmalloc); dma->vmalloc = NULL; - if (dma->bus_addr) { + if (dma->bus_addr) dma->bus_addr = 0; - } dma->direction = DMA_NONE; + return 0; } +EXPORT_SYMBOL_GPL(videobuf_dma_free); /* --------------------------------------------------------------------- */ @@ -315,6 +341,7 @@ int videobuf_sg_dma_map(struct device *dev, struct videobuf_dmabuf *dma) return videobuf_dma_map(&q, dma); } +EXPORT_SYMBOL_GPL(videobuf_sg_dma_map); int videobuf_sg_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma) { @@ -324,49 +351,48 @@ int videobuf_sg_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma) return videobuf_dma_unmap(&q, dma); } +EXPORT_SYMBOL_GPL(videobuf_sg_dma_unmap); /* --------------------------------------------------------------------- */ -static void -videobuf_vm_open(struct vm_area_struct *vma) +static void videobuf_vm_open(struct vm_area_struct *vma) { struct videobuf_mapping *map = vma->vm_private_data; - dprintk(2,"vm_open %p [count=%d,vma=%08lx-%08lx]\n",map, - map->count,vma->vm_start,vma->vm_end); + dprintk(2, "vm_open %p [count=%d,vma=%08lx-%08lx]\n", map, + map->count, vma->vm_start, vma->vm_end); + map->count++; } -static void -videobuf_vm_close(struct vm_area_struct *vma) +static void videobuf_vm_close(struct vm_area_struct *vma) { struct videobuf_mapping *map = vma->vm_private_data; struct videobuf_queue *q = map->q; struct videobuf_dma_sg_memory *mem; int i; - dprintk(2,"vm_close %p [count=%d,vma=%08lx-%08lx]\n",map, - map->count,vma->vm_start,vma->vm_end); + dprintk(2, "vm_close %p [count=%d,vma=%08lx-%08lx]\n", map, + map->count, vma->vm_start, vma->vm_end); map->count--; if (0 == map->count) { - dprintk(1,"munmap %p q=%p\n",map,q); + dprintk(1, "munmap %p q=%p\n", map, q); mutex_lock(&q->vb_lock); for (i = 0; i < VIDEO_MAX_FRAME; i++) { if (NULL == q->bufs[i]) continue; - mem=q->bufs[i]->priv; - + mem = q->bufs[i]->priv; if (!mem) continue; - MAGIC_CHECK(mem->magic,MAGIC_SG_MEM); + MAGIC_CHECK(mem->magic, MAGIC_SG_MEM); if (q->bufs[i]->map != map) continue; q->bufs[i]->map = NULL; q->bufs[i]->baddr = 0; - q->ops->buf_release(q,q->bufs[i]); + q->ops->buf_release(q, q->bufs[i]); } mutex_unlock(&q->vb_lock); kfree(map); @@ -380,26 +406,27 @@ videobuf_vm_close(struct vm_area_struct *vma) * now ...). Bounce buffers don't work very well for the data rates * video capture has. */ -static int -videobuf_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +static int videobuf_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { struct page *page; - dprintk(3,"fault: fault @ %08lx [vma %08lx-%08lx]\n", - (unsigned long)vmf->virtual_address,vma->vm_start,vma->vm_end); + dprintk(3, "fault: fault @ %08lx [vma %08lx-%08lx]\n", + (unsigned long)vmf->virtual_address, + vma->vm_start, vma->vm_end); + page = alloc_page(GFP_USER | __GFP_DMA32); if (!page) return VM_FAULT_OOM; clear_user_highpage(page, (unsigned long)vmf->virtual_address); vmf->page = page; + return 0; } -static const struct vm_operations_struct videobuf_vm_ops = -{ - .open = videobuf_vm_open, - .close = videobuf_vm_close, - .fault = videobuf_vm_fault, +static const struct vm_operations_struct videobuf_vm_ops = { + .open = videobuf_vm_open, + .close = videobuf_vm_close, + .fault = videobuf_vm_fault, }; /* --------------------------------------------------------------------- @@ -417,23 +444,23 @@ static void *__videobuf_alloc(size_t size) struct videobuf_dma_sg_memory *mem; struct videobuf_buffer *vb; - vb = kzalloc(size+sizeof(*mem),GFP_KERNEL); + vb = kzalloc(size + sizeof(*mem), GFP_KERNEL); if (!vb) return vb; - mem = vb->priv = ((char *)vb)+size; - mem->magic=MAGIC_SG_MEM; + mem = vb->priv = ((char *)vb) + size; + mem->magic = MAGIC_SG_MEM; videobuf_dma_init(&mem->dma); - dprintk(1,"%s: allocated at %p(%ld+%ld) & %p(%ld)\n", - __func__,vb,(long)sizeof(*vb),(long)size-sizeof(*vb), - mem,(long)sizeof(*mem)); + dprintk(1, "%s: allocated at %p(%ld+%ld) & %p(%ld)\n", + __func__, vb, (long)sizeof(*vb), (long)size - sizeof(*vb), + mem, (long)sizeof(*mem)); return vb; } -static void *__videobuf_to_vmalloc (struct videobuf_buffer *buf) +static void *__videobuf_to_vmalloc(struct videobuf_buffer *buf) { struct videobuf_dma_sg_memory *mem = buf->priv; BUG_ON(!mem); @@ -443,11 +470,11 @@ static void *__videobuf_to_vmalloc (struct videobuf_buffer *buf) return mem->dma.vmalloc; } -static int __videobuf_iolock (struct videobuf_queue* q, - struct videobuf_buffer *vb, - struct v4l2_framebuffer *fbuf) +static int __videobuf_iolock(struct videobuf_queue *q, + struct videobuf_buffer *vb, + struct v4l2_framebuffer *fbuf) { - int err,pages; + int err, pages; dma_addr_t bus; struct videobuf_dma_sg_memory *mem = vb->priv; BUG_ON(!mem); @@ -460,16 +487,16 @@ static int __videobuf_iolock (struct videobuf_queue* q, if (0 == vb->baddr) { /* no userspace addr -- kernel bounce buffer */ pages = PAGE_ALIGN(vb->size) >> PAGE_SHIFT; - err = videobuf_dma_init_kernel( &mem->dma, - DMA_FROM_DEVICE, - pages ); + err = videobuf_dma_init_kernel(&mem->dma, + DMA_FROM_DEVICE, + pages); if (0 != err) return err; } else if (vb->memory == V4L2_MEMORY_USERPTR) { /* dma directly to userspace */ - err = videobuf_dma_init_user( &mem->dma, - DMA_FROM_DEVICE, - vb->baddr,vb->bsize ); + err = videobuf_dma_init_user(&mem->dma, + DMA_FROM_DEVICE, + vb->baddr, vb->bsize); if (0 != err) return err; } else { @@ -516,9 +543,9 @@ static int __videobuf_sync(struct videobuf_queue *q, { struct videobuf_dma_sg_memory *mem = buf->priv; BUG_ON(!mem); - MAGIC_CHECK(mem->magic,MAGIC_SG_MEM); + MAGIC_CHECK(mem->magic, MAGIC_SG_MEM); - return videobuf_dma_sync(q,&mem->dma); + return videobuf_dma_sync(q, &mem->dma); } static int __videobuf_mmap_free(struct videobuf_queue *q) @@ -540,16 +567,16 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q, { struct videobuf_dma_sg_memory *mem; struct videobuf_mapping *map; - unsigned int first,last,size,i; + unsigned int first, last, size, i; int retval; retval = -EINVAL; if (!(vma->vm_flags & VM_WRITE)) { - dprintk(1,"mmap app bug: PROT_WRITE please\n"); + dprintk(1, "mmap app bug: PROT_WRITE please\n"); goto done; } if (!(vma->vm_flags & VM_SHARED)) { - dprintk(1,"mmap app bug: MAP_SHARED please\n"); + dprintk(1, "mmap app bug: MAP_SHARED please\n"); goto done; } @@ -565,9 +592,9 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q, for (first = 0; first < VIDEO_MAX_FRAME; first++) { if (NULL == q->bufs[first]) continue; - mem=q->bufs[first]->priv; + mem = q->bufs[first]->priv; BUG_ON(!mem); - MAGIC_CHECK(mem->magic,MAGIC_SG_MEM); + MAGIC_CHECK(mem->magic, MAGIC_SG_MEM); if (V4L2_MEMORY_MMAP != q->bufs[first]->memory) continue; @@ -575,7 +602,7 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q, break; } if (VIDEO_MAX_FRAME == first) { - dprintk(1,"mmap app bug: offset invalid [offset=0x%lx]\n", + dprintk(1, "mmap app bug: offset invalid [offset=0x%lx]\n", (vma->vm_pgoff << PAGE_SHIFT)); goto done; } @@ -595,14 +622,14 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q, break; } if (VIDEO_MAX_FRAME == last) { - dprintk(1,"mmap app bug: size invalid [size=0x%lx]\n", + dprintk(1, "mmap app bug: size invalid [size=0x%lx]\n", (vma->vm_end - vma->vm_start)); goto done; } /* create mapping + update buffer list */ retval = -ENOMEM; - map = kmalloc(sizeof(struct videobuf_mapping),GFP_KERNEL); + map = kmalloc(sizeof(struct videobuf_mapping), GFP_KERNEL); if (NULL == map) goto done; @@ -623,21 +650,21 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q, vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED; vma->vm_flags &= ~VM_IO; /* using shared anonymous pages */ vma->vm_private_data = map; - dprintk(1,"mmap %p: q=%p %08lx-%08lx pgoff %08lx bufs %d-%d\n", - map,q,vma->vm_start,vma->vm_end,vma->vm_pgoff,first,last); + dprintk(1, "mmap %p: q=%p %08lx-%08lx pgoff %08lx bufs %d-%d\n", + map, q, vma->vm_start, vma->vm_end, vma->vm_pgoff, first, last); retval = 0; - done: +done: return retval; } -static int __videobuf_copy_to_user ( struct videobuf_queue *q, +static int __videobuf_copy_to_user(struct videobuf_queue *q, char __user *data, size_t count, - int nonblocking ) + int nonblocking) { struct videobuf_dma_sg_memory *mem = q->read_buf->priv; BUG_ON(!mem); - MAGIC_CHECK(mem->magic,MAGIC_SG_MEM); + MAGIC_CHECK(mem->magic, MAGIC_SG_MEM); /* copy to userspace */ if (count > q->read_buf->size - q->read_off) @@ -649,30 +676,30 @@ static int __videobuf_copy_to_user ( struct videobuf_queue *q, return count; } -static int __videobuf_copy_stream ( struct videobuf_queue *q, +static int __videobuf_copy_stream(struct videobuf_queue *q, char __user *data, size_t count, size_t pos, - int vbihack, int nonblocking ) + int vbihack, int nonblocking) { - unsigned int *fc; + unsigned int *fc; struct videobuf_dma_sg_memory *mem = q->read_buf->priv; BUG_ON(!mem); - MAGIC_CHECK(mem->magic,MAGIC_SG_MEM); + MAGIC_CHECK(mem->magic, MAGIC_SG_MEM); if (vbihack) { /* dirty, undocumented hack -- pass the frame counter - * within the last four bytes of each vbi data block. - * We need that one to maintain backward compatibility - * to all vbi decoding software out there ... */ - fc = (unsigned int*)mem->dma.vmalloc; - fc += (q->read_buf->size>>2) -1; + * within the last four bytes of each vbi data block. + * We need that one to maintain backward compatibility + * to all vbi decoding software out there ... */ + fc = (unsigned int *)mem->dma.vmalloc; + fc += (q->read_buf->size >> 2) - 1; *fc = q->read_buf->field_count >> 1; - dprintk(1,"vbihack: %d\n",*fc); + dprintk(1, "vbihack: %d\n", *fc); } /* copy stuff using the common method */ - count = __videobuf_copy_to_user (q,data,count,nonblocking); + count = __videobuf_copy_to_user(q, data, count, nonblocking); - if ( (count==-EFAULT) && (0 == pos) ) + if ((count == -EFAULT) && (0 == pos)) return -EFAULT; return count; @@ -702,8 +729,9 @@ void *videobuf_sg_alloc(size_t size) return videobuf_alloc(&q); } +EXPORT_SYMBOL_GPL(videobuf_sg_alloc); -void videobuf_queue_sg_init(struct videobuf_queue* q, +void videobuf_queue_sg_init(struct videobuf_queue *q, const struct videobuf_queue_ops *ops, struct device *dev, spinlock_t *irqlock, @@ -715,29 +743,5 @@ void videobuf_queue_sg_init(struct videobuf_queue* q, videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize, priv, &sg_ops); } - -/* --------------------------------------------------------------------- */ - -EXPORT_SYMBOL_GPL(videobuf_vmalloc_to_sg); - -EXPORT_SYMBOL_GPL(videobuf_to_dma); -EXPORT_SYMBOL_GPL(videobuf_dma_init); -EXPORT_SYMBOL_GPL(videobuf_dma_init_user); -EXPORT_SYMBOL_GPL(videobuf_dma_init_kernel); -EXPORT_SYMBOL_GPL(videobuf_dma_init_overlay); -EXPORT_SYMBOL_GPL(videobuf_dma_map); -EXPORT_SYMBOL_GPL(videobuf_dma_sync); -EXPORT_SYMBOL_GPL(videobuf_dma_unmap); -EXPORT_SYMBOL_GPL(videobuf_dma_free); - -EXPORT_SYMBOL_GPL(videobuf_sg_dma_map); -EXPORT_SYMBOL_GPL(videobuf_sg_dma_unmap); -EXPORT_SYMBOL_GPL(videobuf_sg_alloc); - EXPORT_SYMBOL_GPL(videobuf_queue_sg_init); -/* - * Local variables: - * c-basic-offset: 8 - * End: - */ diff --git a/drivers/media/video/videobuf-vmalloc.c b/drivers/media/video/videobuf-vmalloc.c index 136e09383c06..d6a8a38dc9cb 100644 --- a/drivers/media/video/videobuf-vmalloc.c +++ b/drivers/media/video/videobuf-vmalloc.c @@ -30,8 +30,12 @@ #define MAGIC_DMABUF 0x17760309 #define MAGIC_VMAL_MEM 0x18221223 -#define MAGIC_CHECK(is,should) if (unlikely((is) != (should))) \ - { printk(KERN_ERR "magic mismatch: %x (expected %x)\n",is,should); BUG(); } +#define MAGIC_CHECK(is, should) \ + if (unlikely((is) != (should))) { \ + printk(KERN_ERR "magic mismatch: %x (expected %x)\n", \ + is, should); \ + BUG(); \ + } static int debug; module_param(debug, int, 0644); @@ -40,19 +44,19 @@ MODULE_DESCRIPTION("helper module to manage video4linux vmalloc buffers"); MODULE_AUTHOR("Mauro Carvalho Chehab "); MODULE_LICENSE("GPL"); -#define dprintk(level, fmt, arg...) if (debug >= level) \ - printk(KERN_DEBUG "vbuf-vmalloc: " fmt , ## arg) +#define dprintk(level, fmt, arg...) \ + if (debug >= level) \ + printk(KERN_DEBUG "vbuf-vmalloc: " fmt , ## arg) /***************************************************************************/ -static void -videobuf_vm_open(struct vm_area_struct *vma) +static void videobuf_vm_open(struct vm_area_struct *vma) { struct videobuf_mapping *map = vma->vm_private_data; - dprintk(2,"vm_open %p [count=%u,vma=%08lx-%08lx]\n",map, - map->count,vma->vm_start,vma->vm_end); + dprintk(2, "vm_open %p [count=%u,vma=%08lx-%08lx]\n", map, + map->count, vma->vm_start, vma->vm_end); map->count++; } @@ -63,7 +67,7 @@ static void videobuf_vm_close(struct vm_area_struct *vma) struct videobuf_queue *q = map->q; int i; - dprintk(2,"vm_close %p [count=%u,vma=%08lx-%08lx]\n", map, + dprintk(2, "vm_close %p [count=%u,vma=%08lx-%08lx]\n", map, map->count, vma->vm_start, vma->vm_end); map->count--; @@ -116,8 +120,7 @@ static void videobuf_vm_close(struct vm_area_struct *vma) return; } -static const struct vm_operations_struct videobuf_vm_ops = -{ +static const struct vm_operations_struct videobuf_vm_ops = { .open = videobuf_vm_open, .close = videobuf_vm_close, }; @@ -137,23 +140,23 @@ static void *__videobuf_alloc(size_t size) struct videobuf_vmalloc_memory *mem; struct videobuf_buffer *vb; - vb = kzalloc(size+sizeof(*mem),GFP_KERNEL); + vb = kzalloc(size + sizeof(*mem), GFP_KERNEL); if (!vb) return vb; - mem = vb->priv = ((char *)vb)+size; - mem->magic=MAGIC_VMAL_MEM; + mem = vb->priv = ((char *)vb) + size; + mem->magic = MAGIC_VMAL_MEM; - dprintk(1,"%s: allocated at %p(%ld+%ld) & %p(%ld)\n", - __func__,vb,(long)sizeof(*vb),(long)size-sizeof(*vb), - mem,(long)sizeof(*mem)); + dprintk(1, "%s: allocated at %p(%ld+%ld) & %p(%ld)\n", + __func__, vb, (long)sizeof(*vb), (long)size - sizeof(*vb), + mem, (long)sizeof(*mem)); return vb; } -static int __videobuf_iolock (struct videobuf_queue* q, - struct videobuf_buffer *vb, - struct v4l2_framebuffer *fbuf) +static int __videobuf_iolock(struct videobuf_queue *q, + struct videobuf_buffer *vb, + struct v4l2_framebuffer *fbuf) { struct videobuf_vmalloc_memory *mem = vb->priv; int pages; @@ -177,15 +180,13 @@ static int __videobuf_iolock (struct videobuf_queue* q, dprintk(1, "%s memory method USERPTR\n", __func__); -#if 1 if (vb->baddr) { printk(KERN_ERR "USERPTR is currently not supported\n"); return -EINVAL; } -#endif /* The only USERPTR currently supported is the one needed for - read() method. + * read() method. */ mem->vmalloc = vmalloc_user(pages); @@ -210,7 +211,7 @@ static int __videobuf_iolock (struct videobuf_queue* q, /* Try to remap memory */ rc = remap_vmalloc_range(mem->vma, (void *)vb->baddr, 0); if (rc < 0) { - printk(KERN_ERR "mmap: remap failed with error %d. ", rc); + printk(KERN_ERR "mmap: remap failed with error %d", rc); return -ENOMEM; } #endif @@ -273,7 +274,7 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q, break; } if (VIDEO_MAX_FRAME == first) { - dprintk(1,"mmap app bug: offset invalid [offset=0x%lx]\n", + dprintk(1, "mmap app bug: offset invalid [offset=0x%lx]\n", (vma->vm_pgoff << PAGE_SHIFT)); return -EINVAL; } @@ -300,8 +301,7 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q, printk(KERN_ERR "vmalloc (%d pages) failed\n", pages); goto error; } - dprintk(1, "vmalloc is at addr %p (%d pages)\n", - mem->vmalloc, pages); + dprintk(1, "vmalloc is at addr %p (%d pages)\n", mem->vmalloc, pages); /* Try to remap memory */ retval = remap_vmalloc_range(vma, mem->vmalloc, 0); @@ -315,7 +315,7 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q, vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED; vma->vm_private_data = map; - dprintk(1,"mmap %p: q=%p %08lx-%08lx (%lx) pgoff %08lx buf %d\n", + dprintk(1, "mmap %p: q=%p %08lx-%08lx (%lx) pgoff %08lx buf %d\n", map, q, vma->vm_start, vma->vm_end, (long int) q->bufs[first]->bsize, vma->vm_pgoff, first); @@ -330,15 +330,15 @@ error: return -ENOMEM; } -static int __videobuf_copy_to_user ( struct videobuf_queue *q, - char __user *data, size_t count, - int nonblocking ) +static int __videobuf_copy_to_user(struct videobuf_queue *q, + char __user *data, size_t count, + int nonblocking) { - struct videobuf_vmalloc_memory *mem=q->read_buf->priv; - BUG_ON (!mem); - MAGIC_CHECK(mem->magic,MAGIC_VMAL_MEM); + struct videobuf_vmalloc_memory *mem = q->read_buf->priv; + BUG_ON(!mem); + MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM); - BUG_ON (!mem->vmalloc); + BUG_ON(!mem->vmalloc); /* copy to userspace */ if (count > q->read_buf->size - q->read_off) @@ -350,30 +350,30 @@ static int __videobuf_copy_to_user ( struct videobuf_queue *q, return count; } -static int __videobuf_copy_stream ( struct videobuf_queue *q, - char __user *data, size_t count, size_t pos, - int vbihack, int nonblocking ) +static int __videobuf_copy_stream(struct videobuf_queue *q, + char __user *data, size_t count, size_t pos, + int vbihack, int nonblocking) { - unsigned int *fc; - struct videobuf_vmalloc_memory *mem=q->read_buf->priv; - BUG_ON (!mem); - MAGIC_CHECK(mem->magic,MAGIC_VMAL_MEM); + unsigned int *fc; + struct videobuf_vmalloc_memory *mem = q->read_buf->priv; + BUG_ON(!mem); + MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM); if (vbihack) { /* dirty, undocumented hack -- pass the frame counter * within the last four bytes of each vbi data block. * We need that one to maintain backward compatibility * to all vbi decoding software out there ... */ - fc = (unsigned int*)mem->vmalloc; - fc += (q->read_buf->size>>2) -1; + fc = (unsigned int *)mem->vmalloc; + fc += (q->read_buf->size >> 2) - 1; *fc = q->read_buf->field_count >> 1; - dprintk(1,"vbihack: %d\n",*fc); + dprintk(1, "vbihack: %d\n", *fc); } /* copy stuff using the common method */ - count = __videobuf_copy_to_user (q,data,count,nonblocking); + count = __videobuf_copy_to_user(q, data, count, nonblocking); - if ( (count==-EFAULT) && (0 == pos) ) + if ((count == -EFAULT) && (0 == pos)) return -EFAULT; return count; @@ -392,7 +392,7 @@ static struct videobuf_qtype_ops qops = { .vmalloc = videobuf_to_vmalloc, }; -void videobuf_queue_vmalloc_init(struct videobuf_queue* q, +void videobuf_queue_vmalloc_init(struct videobuf_queue *q, const struct videobuf_queue_ops *ops, struct device *dev, spinlock_t *irqlock, @@ -404,20 +404,19 @@ void videobuf_queue_vmalloc_init(struct videobuf_queue* q, videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize, priv, &qops); } - EXPORT_SYMBOL_GPL(videobuf_queue_vmalloc_init); -void *videobuf_to_vmalloc (struct videobuf_buffer *buf) +void *videobuf_to_vmalloc(struct videobuf_buffer *buf) { - struct videobuf_vmalloc_memory *mem=buf->priv; - BUG_ON (!mem); - MAGIC_CHECK(mem->magic,MAGIC_VMAL_MEM); + struct videobuf_vmalloc_memory *mem = buf->priv; + BUG_ON(!mem); + MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM); return mem->vmalloc; } EXPORT_SYMBOL_GPL(videobuf_to_vmalloc); -void videobuf_vmalloc_free (struct videobuf_buffer *buf) +void videobuf_vmalloc_free(struct videobuf_buffer *buf) { struct videobuf_vmalloc_memory *mem = buf->priv; @@ -442,8 +441,3 @@ void videobuf_vmalloc_free (struct videobuf_buffer *buf) } EXPORT_SYMBOL_GPL(videobuf_vmalloc_free); -/* - * Local variables: - * c-basic-offset: 8 - * End: - */ diff --git a/include/media/videobuf-core.h b/include/media/videobuf-core.h index 316fdccdcaa0..b1f7bf423fd3 100644 --- a/include/media/videobuf-core.h +++ b/include/media/videobuf-core.h @@ -129,14 +129,14 @@ struct videobuf_qtype_ops { void *(*alloc) (size_t size); void *(*vmalloc) (struct videobuf_buffer *buf); - int (*iolock) (struct videobuf_queue* q, + int (*iolock) (struct videobuf_queue *q, struct videobuf_buffer *vb, struct v4l2_framebuffer *fbuf); int (*mmap) (struct videobuf_queue *q, unsigned int *count, unsigned int *size, enum v4l2_memory memory); - int (*sync) (struct videobuf_queue* q, + int (*sync) (struct videobuf_queue *q, struct videobuf_buffer *buf); int (*video_copy_to_user)(struct videobuf_queue *q, char __user *data, @@ -185,14 +185,14 @@ struct videobuf_queue { }; int videobuf_waiton(struct videobuf_buffer *vb, int non_blocking, int intr); -int videobuf_iolock(struct videobuf_queue* q, struct videobuf_buffer *vb, +int videobuf_iolock(struct videobuf_queue *q, struct videobuf_buffer *vb, struct v4l2_framebuffer *fbuf); void *videobuf_alloc(struct videobuf_queue* q); /* Used on videobuf-dvb */ -void *videobuf_queue_to_vmalloc (struct videobuf_queue* q, - struct videobuf_buffer *buf); +void *videobuf_queue_to_vmalloc(struct videobuf_queue *q, + struct videobuf_buffer *buf); void videobuf_queue_core_init(struct videobuf_queue *q, const struct videobuf_queue_ops *ops, diff --git a/include/media/videobuf-dma-sg.h b/include/media/videobuf-dma-sg.h index 53e72f787175..dbfd8cf7b7cb 100644 --- a/include/media/videobuf-dma-sg.h +++ b/include/media/videobuf-dma-sg.h @@ -17,6 +17,8 @@ * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 */ +#ifndef _VIDEOBUF_DMA_SG_H +#define _VIDEOBUF_DMA_SG_H #include @@ -27,14 +29,14 @@ * block (NULL on errors). Memory for the scatterlist is allocated * using kmalloc. The caller must free the memory. */ -struct scatterlist* videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages); +struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages); /* * Return a scatterlist for a an array of userpages (NULL on errors). * Memory for the scatterlist is allocated using kmalloc. The caller * must free the memory. */ -struct scatterlist* videobuf_pages_to_sg(struct page **pages, int nr_pages, +struct scatterlist *videobuf_pages_to_sg(struct page **pages, int nr_pages, int offset); /* --------------------------------------------------------------------- */ @@ -78,8 +80,7 @@ struct videobuf_dmabuf { int direction; }; -struct videobuf_dma_sg_memory -{ +struct videobuf_dma_sg_memory { u32 magic; /* for mmap'ed buffers */ @@ -95,14 +96,14 @@ int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction, dma_addr_t addr, int nr_pages); int videobuf_dma_free(struct videobuf_dmabuf *dma); -int videobuf_dma_map(struct videobuf_queue* q,struct videobuf_dmabuf *dma); -int videobuf_dma_sync(struct videobuf_queue* q,struct videobuf_dmabuf *dma); -int videobuf_dma_unmap(struct videobuf_queue* q,struct videobuf_dmabuf *dma); -struct videobuf_dmabuf *videobuf_to_dma (struct videobuf_buffer *buf); +int videobuf_dma_map(struct videobuf_queue *q, struct videobuf_dmabuf *dma); +int videobuf_dma_sync(struct videobuf_queue *q, struct videobuf_dmabuf *dma); +int videobuf_dma_unmap(struct videobuf_queue *q, struct videobuf_dmabuf *dma); +struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf); void *videobuf_sg_alloc(size_t size); -void videobuf_queue_sg_init(struct videobuf_queue* q, +void videobuf_queue_sg_init(struct videobuf_queue *q, const struct videobuf_queue_ops *ops, struct device *dev, spinlock_t *irqlock, @@ -111,9 +112,11 @@ void videobuf_queue_sg_init(struct videobuf_queue* q, unsigned int msize, void *priv); - /*FIXME: these variants are used only on *-alsa code, where videobuf is - * used without queue - */ +/*FIXME: these variants are used only on *-alsa code, where videobuf is + * used without queue + */ int videobuf_sg_dma_map(struct device *dev, struct videobuf_dmabuf *dma); int videobuf_sg_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma); +#endif /* _VIDEOBUF_DMA_SG_H */ + diff --git a/include/media/videobuf-vmalloc.h b/include/media/videobuf-vmalloc.h index 4b419a257a7d..851eb1a2ff2a 100644 --- a/include/media/videobuf-vmalloc.h +++ b/include/media/videobuf-vmalloc.h @@ -19,17 +19,17 @@ /* --------------------------------------------------------------------- */ -struct videobuf_vmalloc_memory -{ +struct videobuf_vmalloc_memory { u32 magic; void *vmalloc; - /* remap_vmalloc_range seems to need to run after mmap() on some cases */ + /* remap_vmalloc_range seems to need to run + * after mmap() on some cases */ struct vm_area_struct *vma; }; -void videobuf_queue_vmalloc_init(struct videobuf_queue* q, +void videobuf_queue_vmalloc_init(struct videobuf_queue *q, const struct videobuf_queue_ops *ops, struct device *dev, spinlock_t *irqlock, @@ -38,8 +38,8 @@ void videobuf_queue_vmalloc_init(struct videobuf_queue* q, unsigned int msize, void *priv); -void *videobuf_to_vmalloc (struct videobuf_buffer *buf); +void *videobuf_to_vmalloc(struct videobuf_buffer *buf); -void videobuf_vmalloc_free (struct videobuf_buffer *buf); +void videobuf_vmalloc_free(struct videobuf_buffer *buf); #endif -- 2.11.0