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| author | Daniel Mack <daniel@zonque.org> | 2020-05-21 11:11:50 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-22 11:05:46 +0200 |
| commit | 6393ff1c4435acc343b1481f5b834b918cb42b12 (patch) | |
| tree | be94368ea4b257c40544f18eafa690c0dbd111d0 /drivers/tty | |
| parent | 37f3965d74d5b5c914f8f8a108ae1d94ab5ffae3 (diff) | |
| download | linux-6393ff1c4435acc343b1481f5b834b918cb42b12.tar.gz linux-6393ff1c4435acc343b1481f5b834b918cb42b12.tar.bz2 linux-6393ff1c4435acc343b1481f5b834b918cb42b12.zip | |
sc16is7xx: Use threaded IRQ
Use a threaded IRQ handler to get rid of the irq_work kthread.
This also allows for the driver to use interrupts generated by
a threaded controller.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Link: https://lore.kernel.org/r/20200521091152.404404-5-daniel@zonque.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/sc16is7xx.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c index 71a0b288fa11..3908a2154b7f 100644 --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -327,7 +327,6 @@ struct sc16is7xx_port { unsigned char buf[SC16IS7XX_FIFO_SIZE]; struct kthread_worker kworker; struct task_struct *kworker_task; - struct kthread_work irq_work; struct mutex efr_lock; struct sc16is7xx_one p[]; }; @@ -710,9 +709,9 @@ static bool sc16is7xx_port_irq(struct sc16is7xx_port *s, int portno) return true; } -static void sc16is7xx_ist(struct kthread_work *ws) +static irqreturn_t sc16is7xx_irq(int irq, void *dev_id) { - struct sc16is7xx_port *s = to_sc16is7xx_port(ws, irq_work); + struct sc16is7xx_port *s = (struct sc16is7xx_port *)dev_id; mutex_lock(&s->efr_lock); @@ -727,13 +726,6 @@ static void sc16is7xx_ist(struct kthread_work *ws) } mutex_unlock(&s->efr_lock); -} - -static irqreturn_t sc16is7xx_irq(int irq, void *dev_id) -{ - struct sc16is7xx_port *s = (struct sc16is7xx_port *)dev_id; - - kthread_queue_work(&s->kworker, &s->irq_work); return IRQ_HANDLED; } @@ -1221,7 +1213,6 @@ static int sc16is7xx_probe(struct device *dev, mutex_init(&s->efr_lock); kthread_init_worker(&s->kworker); - kthread_init_work(&s->irq_work, sc16is7xx_ist); s->kworker_task = kthread_run(kthread_worker_fn, &s->kworker, "sc16is7xx"); if (IS_ERR(s->kworker_task)) { @@ -1303,8 +1294,9 @@ static int sc16is7xx_probe(struct device *dev, } /* Setup interrupt */ - ret = devm_request_irq(dev, irq, sc16is7xx_irq, - IRQF_TRIGGER_FALLING, dev_name(dev), s); + ret = devm_request_threaded_irq(dev, irq, NULL, sc16is7xx_irq, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + dev_name(dev), s); if (!ret) return 0; |