diff options
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/ohci.c | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 1a49743347f..07d3c8d58b3 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -172,7 +172,7 @@ struct iso_context { struct context context; void *header; size_t header_length; - + u16 last_timestamp; u8 sync; u8 tags; }; @@ -2676,6 +2676,14 @@ static void ohci_write_csr(struct fw_card *card, int csr_offset, u32 value) } } +static void flush_iso_completions(struct iso_context *ctx) +{ + ctx->base.callback.sc(&ctx->base, ctx->last_timestamp, + ctx->header_length, ctx->header, + ctx->base.callback_data); + ctx->header_length = 0; +} + static void copy_iso_headers(struct iso_context *ctx, const u32 *dma_hdr) { u32 *ctx_hdr; @@ -2684,6 +2692,7 @@ static void copy_iso_headers(struct iso_context *ctx, const u32 *dma_hdr) return; ctx_hdr = ctx->header + ctx->header_length; + ctx->last_timestamp = (u16)le32_to_cpu((__force __le32)dma_hdr[0]); /* * The two iso header quadlets are byteswapped to little @@ -2707,8 +2716,6 @@ static int handle_ir_packet_per_buffer(struct context *context, container_of(context, struct iso_context, context); struct descriptor *pd; u32 buffer_dma; - __le32 *ir_header; - void *p; for (pd = d; pd <= last; pd++) if (pd->transfer_status) @@ -2727,17 +2734,10 @@ static int handle_ir_packet_per_buffer(struct context *context, DMA_FROM_DEVICE); } - p = last + 1; - copy_iso_headers(ctx, p); + copy_iso_headers(ctx, (u32 *) (last + 1)); - if (last->control & cpu_to_le16(DESCRIPTOR_IRQ_ALWAYS)) { - ir_header = (__le32 *) p; - ctx->base.callback.sc(&ctx->base, - le32_to_cpu(ir_header[0]) & 0xffff, - ctx->header_length, ctx->header, - ctx->base.callback_data); - ctx->header_length = 0; - } + if (last->control & cpu_to_le16(DESCRIPTOR_IRQ_ALWAYS)) + flush_iso_completions(ctx); return 1; } @@ -2834,12 +2834,11 @@ static int handle_it_packet(struct context *context, le16_to_cpu(pd->res_count)); ctx->header_length += 4; } - if (last->control & cpu_to_le16(DESCRIPTOR_IRQ_ALWAYS)) { - ctx->base.callback.sc(&ctx->base, le16_to_cpu(last->res_count), - ctx->header_length, ctx->header, - ctx->base.callback_data); - ctx->header_length = 0; - } + + ctx->last_timestamp = le16_to_cpu(last->res_count); + if (last->control & cpu_to_le16(DESCRIPTOR_IRQ_ALWAYS)) + flush_iso_completions(ctx); + return 1; } |