diff options
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/fw-ohci.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c index eaa213e2159..fcf59fcae1b 100644 --- a/drivers/firewire/fw-ohci.c +++ b/drivers/firewire/fw-ohci.c @@ -284,16 +284,10 @@ static int ar_context_add_page(struct ar_context *ctx) dma_addr_t ab_bus; size_t offset; - ab = (struct ar_buffer *) __get_free_page(GFP_ATOMIC); + ab = dma_alloc_coherent(dev, PAGE_SIZE, &ab_bus, GFP_ATOMIC); if (ab == NULL) return -ENOMEM; - ab_bus = dma_map_single(dev, ab, PAGE_SIZE, DMA_BIDIRECTIONAL); - if (dma_mapping_error(ab_bus)) { - free_page((unsigned long) ab); - return -ENOMEM; - } - memset(&ab->descriptor, 0, sizeof(ab->descriptor)); ab->descriptor.control = cpu_to_le16(DESCRIPTOR_INPUT_MORE | DESCRIPTOR_STATUS | @@ -304,8 +298,6 @@ static int ar_context_add_page(struct ar_context *ctx) ab->descriptor.res_count = cpu_to_le16(PAGE_SIZE - offset); ab->descriptor.branch_address = 0; - dma_sync_single_for_device(dev, ab_bus, PAGE_SIZE, DMA_BIDIRECTIONAL); - ctx->last_buffer->descriptor.branch_address = cpu_to_le32(ab_bus | 1); ctx->last_buffer->next = ab; ctx->last_buffer = ab; @@ -409,6 +401,7 @@ static void ar_context_tasklet(unsigned long data) if (d->res_count == 0) { size_t size, rest, offset; + dma_addr_t buffer_bus; /* * This descriptor is finished and we may have a @@ -417,9 +410,7 @@ static void ar_context_tasklet(unsigned long data) */ offset = offsetof(struct ar_buffer, data); - dma_unmap_single(ohci->card.device, - le32_to_cpu(ab->descriptor.data_address) - offset, - PAGE_SIZE, DMA_BIDIRECTIONAL); + buffer_bus = le32_to_cpu(ab->descriptor.data_address) - offset; buffer = ab; ab = ab->next; @@ -435,7 +426,8 @@ static void ar_context_tasklet(unsigned long data) while (buffer < end) buffer = handle_ar_packet(ctx, buffer); - free_page((unsigned long)buffer); + dma_free_coherent(ohci->card.device, PAGE_SIZE, + buffer, buffer_bus); ar_context_add_page(ctx); } else { buffer = ctx->pointer; |