diff options
Diffstat (limited to 'arch/arm/common/dmabounce.c')
| -rw-r--r-- | arch/arm/common/dmabounce.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c index 210ad1bef7e..32e9cc6ca7d 100644 --- a/arch/arm/common/dmabounce.c +++ b/arch/arm/common/dmabounce.c @@ -173,7 +173,8 @@ find_safe_buffer(struct dmabounce_device_info *device_info, dma_addr_t safe_dma_ read_lock_irqsave(&device_info->lock, flags); list_for_each_entry(b, &device_info->safe_buffers, node) - if (b->safe_dma_addr == safe_dma_addr) { + if (b->safe_dma_addr <= safe_dma_addr && + b->safe_dma_addr + b->size > safe_dma_addr) { rb = b; break; } @@ -362,9 +363,10 @@ void __dma_unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size, EXPORT_SYMBOL(__dma_unmap_page); int dmabounce_sync_for_cpu(struct device *dev, dma_addr_t addr, - unsigned long off, size_t sz, enum dma_data_direction dir) + size_t sz, enum dma_data_direction dir) { struct safe_buffer *buf; + unsigned long off; dev_dbg(dev, "%s(dma=%#x,off=%#lx,sz=%zx,dir=%x)\n", __func__, addr, off, sz, dir); @@ -373,6 +375,8 @@ int dmabounce_sync_for_cpu(struct device *dev, dma_addr_t addr, if (!buf) return 1; + off = addr - buf->safe_dma_addr; + BUG_ON(buf->direction != dir); dev_dbg(dev, "%s: unsafe buffer %p (dma=%#x) mapped to %p (dma=%#x)\n", @@ -391,9 +395,10 @@ int dmabounce_sync_for_cpu(struct device *dev, dma_addr_t addr, EXPORT_SYMBOL(dmabounce_sync_for_cpu); int dmabounce_sync_for_device(struct device *dev, dma_addr_t addr, - unsigned long off, size_t sz, enum dma_data_direction dir) + size_t sz, enum dma_data_direction dir) { struct safe_buffer *buf; + unsigned long off; dev_dbg(dev, "%s(dma=%#x,off=%#lx,sz=%zx,dir=%x)\n", __func__, addr, off, sz, dir); @@ -402,6 +407,8 @@ int dmabounce_sync_for_device(struct device *dev, dma_addr_t addr, if (!buf) return 1; + off = addr - buf->safe_dma_addr; + BUG_ON(buf->direction != dir); dev_dbg(dev, "%s: unsafe buffer %p (dma=%#x) mapped to %p (dma=%#x)\n", |