@@ -211,21 +211,39 @@ EXPORT_SYMBOL(fw_iso_context_queue_flush);
int fw_iso_context_flush_completions(struct fw_iso_context *ctx)
{
+ int err;
+
trace_isoc_outbound_flush_completions(ctx);
trace_isoc_inbound_single_flush_completions(ctx);
trace_isoc_inbound_multiple_flush_completions(ctx);
- return ctx->card->driver->flush_iso_completions(ctx);
+ might_sleep();
+
+ disable_work_sync(&ctx->work);
+
+ err = ctx->card->driver->flush_iso_completions(ctx);
+
+ enable_work(&ctx->work);
+
+ return err;
}
EXPORT_SYMBOL(fw_iso_context_flush_completions);
int fw_iso_context_stop(struct fw_iso_context *ctx)
{
+ int err;
+
trace_isoc_outbound_stop(ctx);
trace_isoc_inbound_single_stop(ctx);
trace_isoc_inbound_multiple_stop(ctx);
- return ctx->card->driver->stop_iso(ctx);
+ might_sleep();
+
+ err = ctx->card->driver->stop_iso(ctx);
+
+ cancel_work_sync(&ctx->work);
+
+ return err;
}
EXPORT_SYMBOL(fw_iso_context_stop);
@@ -159,6 +159,16 @@ int fw_iso_buffer_alloc(struct fw_iso_buffer *buffer, int page_count);
int fw_iso_buffer_map_dma(struct fw_iso_buffer *buffer, struct fw_card *card,
enum dma_data_direction direction);
+static inline void fw_iso_context_init_work(struct fw_iso_context *ctx, work_func_t func)
+{
+ INIT_WORK(&ctx->work, func);
+}
+
+static inline void fw_iso_context_schedule_work(struct fw_iso_context *ctx)
+{
+ queue_work(ctx->card->isoc_wq, &ctx->work);
+}
+
/* -topology */
@@ -511,6 +511,7 @@ union fw_iso_callback {
struct fw_iso_context {
struct fw_card *card;
+ struct work_struct work;
int type;
int channel;
int speed;
In the previous commit, the workqueue is added per the instance of fw_card structure for isochronous contexts. The workqueue is designed to be used by the implementation of fw_card_driver structure underlying the fw_card. This commit adds some local APIs to be used by the implementation. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> --- drivers/firewire/core-iso.c | 22 ++++++++++++++++++++-- drivers/firewire/core.h | 10 ++++++++++ include/linux/firewire.h | 1 + 3 files changed, 31 insertions(+), 2 deletions(-)