misc/iwmc3200top: use system_wq instead of dedicated workqueues

With cmwq, there's no reason to use separate workqueues in
iwmc3200top.  Drop them and use system_wq instead.  The used work
items are sync flushed before driver detach.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Tomas Winkler <tomas.winkler@intel.com>

diff --git a/drivers/misc/iwmc3200top/iwmc3200top.h b/drivers/misc/iwmc3200top/iwmc3200top.h
index 740ff07..620973e 100644 (file)
--- a/drivers/misc/iwmc3200top/iwmc3200top.h
+++ b/drivers/misc/iwmc3200top/iwmc3200top.h
@@ -183,9 +183,7 @@ struct iwmct_priv {
        u32 barker;
        struct iwmct_dbg dbg;
 
-       /* drivers work queue */
-       struct workqueue_struct *wq;
-       struct workqueue_struct *bus_rescan_wq;
+       /* drivers work items */
        struct work_struct bus_rescan_worker;
        struct work_struct isr_worker;
 

diff --git a/drivers/misc/iwmc3200top/main.c b/drivers/misc/iwmc3200top/main.c
index c73cef2..727af07 100644 (file)
--- a/drivers/misc/iwmc3200top/main.c
+++ b/drivers/misc/iwmc3200top/main.c
@@ -89,7 +89,7 @@ static void op_top_message(struct iwmct_priv *priv, struct top_msg *msg)
        switch (msg->hdr.opcode) {
        case OP_OPR_ALIVE:
                LOG_INFO(priv, FW_MSG, "Got ALIVE from device, wake rescan\n");
-               queue_work(priv->bus_rescan_wq, &priv->bus_rescan_worker);
+               schedule_work(&priv->bus_rescan_worker);
                break;
        default:
                LOG_INFO(priv, FW_MSG, "Received msg opcode 0x%X\n",
@@ -360,7 +360,7 @@ static void iwmct_irq(struct sdio_func *func)
        /* clear the function's interrupt request bit (write 1 to clear) */
        sdio_writeb(func, 1, IWMC_SDIO_INTR_CLEAR_ADDR, &ret);
 
-       queue_work(priv->wq, &priv->isr_worker);
+       schedule_work(&priv->isr_worker);
 
        LOG_TRACE(priv, IRQ, "exit iwmct_irq\n");
 
@@ -506,10 +506,6 @@ static int iwmct_probe(struct sdio_func *func,
        priv->func = func;
        sdio_set_drvdata(func, priv);
 
-
-       /* create drivers work queue */
-       priv->wq = create_workqueue(DRV_NAME "_wq");
-       priv->bus_rescan_wq = create_workqueue(DRV_NAME "_rescan_wq");
        INIT_WORK(&priv->bus_rescan_worker, iwmct_rescan_worker);
        INIT_WORK(&priv->isr_worker, iwmct_irq_read_worker);
 
@@ -604,9 +600,9 @@ static void iwmct_remove(struct sdio_func *func)
        sdio_release_irq(func);
        sdio_release_host(func);
 
-       /* Safely destroy osc workqueue */
-       destroy_workqueue(priv->bus_rescan_wq);
-       destroy_workqueue(priv->wq);
+       /* Make sure works are finished */
+       flush_work_sync(&priv->bus_rescan_worker);
+       flush_work_sync(&priv->isr_worker);
 
        sdio_claim_host(func);
        sdio_disable_func(func);