mrf24j40: Use threaded IRQ handler

Eliminate all the workqueue and interrupt enable/disable.

Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c
index 66bb4ceaabe853b794f5634a53e673b85c6c1e76..c1bc688363461a9e117f523ec7e3b42c3fb78422 100644 (file)
--- a/drivers/net/ieee802154/mrf24j40.c
+++ b/drivers/net/ieee802154/mrf24j40.c
@@ -82,7 +82,6 @@ struct mrf24j40 {
 
        struct mutex buffer_mutex; /* only used to protect buf */
        struct completion tx_complete;
-       struct work_struct irqwork;
        u8 *buf; /* 3 bytes. Used for SPI single-register transfers. */
 };
 
@@ -590,17 +589,6 @@ static struct ieee802154_ops mrf24j40_ops = {
 static irqreturn_t mrf24j40_isr(int irq, void *data)
 {
        struct mrf24j40 *devrec = data;
-
-       disable_irq_nosync(irq);
-
-       schedule_work(&devrec->irqwork);
-
-       return IRQ_HANDLED;
-}
-
-static void mrf24j40_isrwork(struct work_struct *work)
-{
-       struct mrf24j40 *devrec = container_of(work, struct mrf24j40, irqwork);
        u8 intstat;
        int ret;
 
@@ -618,7 +606,7 @@ static void mrf24j40_isrwork(struct work_struct *work)
                mrf24j40_handle_rx(devrec);
 
 out:
-       enable_irq(devrec->spi->irq);
+       return IRQ_HANDLED;
 }
 
 static int mrf24j40_probe(struct spi_device *spi)
@@ -642,7 +630,6 @@ static int mrf24j40_probe(struct spi_device *spi)
 
        mutex_init(&devrec->buffer_mutex);
        init_completion(&devrec->tx_complete);
-       INIT_WORK(&devrec->irqwork, mrf24j40_isrwork);
        devrec->spi = spi;
        spi_set_drvdata(spi, devrec);
 
@@ -688,11 +675,12 @@ static int mrf24j40_probe(struct spi_device *spi)
        val &= ~0x3; /* Clear RX mode (normal) */
        write_short_reg(devrec, REG_RXMCR, val);
 
-       ret = request_irq(spi->irq,
-                         mrf24j40_isr,
-                         IRQF_TRIGGER_FALLING,
-                         dev_name(&spi->dev),
-                         devrec);
+       ret = request_threaded_irq(spi->irq,
+                                  NULL,
+                                  mrf24j40_isr,
+                                  IRQF_TRIGGER_FALLING|IRQF_ONESHOT,
+                                  dev_name(&spi->dev),
+                                  devrec);
 
        if (ret) {
                dev_err(printdev(devrec), "Unable to get IRQ");
@@ -721,7 +709,6 @@ static int mrf24j40_remove(struct spi_device *spi)
        dev_dbg(printdev(devrec), "remove\n");
 
        free_irq(spi->irq, devrec);
-       flush_work(&devrec->irqwork); /* TODO: Is this the right call? */
        ieee802154_unregister_device(devrec->dev);
        ieee802154_free_device(devrec->dev);
        /* TODO: Will ieee802154_free_device() wait until ->xmit() is