alloc_workqueue replaces deprecated create_workqueue().
In if_sdio.c, the workqueue card->workqueue has workitem
&card->packet_worker, which is mapped to if_sdio_host_to_card_worker.
The workitem is involved in sending packets to firmware.
Forward progress under memory pressure is a requirement here.
In if_spi.c, the workqueue card->workqueue has workitem
&card->packet_worker, which is mapped to if_spi_host_to_card_worker.
The workitem is involved in sending command packets from the host.
Forward progress under memory pressure is a requirement here.
Dedicated workqueues have been used in both cases since the workitems
on the workqueues are involved in normal device operation with
WQ_MEM_RECLAIM set to gurantee forward progress under memory pressure.
Since there are only a fixed number of work items, explicit concurrency
limit is unnecessary.
flush_workqueue is unnecessary since destroy_workqueue() itself calls
drain_workqueue() which flushes repeatedly till the workqueue
becomes empty. Hence the calls to flush_workqueue() before
destroy_workqueue() have been dropped.
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
If a sdio host does not support sdio irqs, polling is used
instead. That has an impact on performance. Some functionality
should not be enabled then. This add a variable in
libertas_priv to indicate that.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
"&card->priv->driver_lock" and "&priv->driver_lock" are the same and
it's nicer to use the shorter one consistently.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
