ide: don't enable/disable interrupts in force threaded-IRQ mode
The interrupts are enabled/disabled so the interrupt handler can run with enabled interrupts while serving the interrupt and not lose other interrupts especially the timer tick. If the system runs with force-threaded interrupts then there is no need to enable the interrupts. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -108,6 +108,7 @@ int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad,
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ide_hwif_t *hwif = drive->hwif;
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const struct ide_tp_ops *tp_ops = hwif->tp_ops;
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unsigned long flags;
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bool irqs_threaded = force_irqthreads;
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int i;
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u8 stat;
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@ -115,8 +116,10 @@ int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad,
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stat = tp_ops->read_status(hwif);
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if (stat & ATA_BUSY) {
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if (!irqs_threaded) {
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local_save_flags(flags);
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local_irq_enable_in_hardirq();
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}
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timeout += jiffies;
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while ((stat = tp_ops->read_status(hwif)) & ATA_BUSY) {
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if (time_after(jiffies, timeout)) {
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@ -129,11 +132,13 @@ int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad,
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if ((stat & ATA_BUSY) == 0)
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break;
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if (!irqs_threaded)
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local_irq_restore(flags);
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*rstat = stat;
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return -EBUSY;
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}
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}
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if (!irqs_threaded)
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local_irq_restore(flags);
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}
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/*
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@ -405,7 +405,7 @@ static ide_startstop_t pre_task_out_intr(ide_drive_t *drive,
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return startstop;
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}
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if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0)
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if (!force_irqthreads && (drive->dev_flags & IDE_DFLAG_UNMASK) == 0)
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local_irq_disable();
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ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE);
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@ -24,6 +24,7 @@
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#ifdef CONFIG_IRQ_FORCED_THREADING
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__read_mostly bool force_irqthreads;
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EXPORT_SYMBOL_GPL(force_irqthreads);
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static int __init setup_forced_irqthreads(char *arg)
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{
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