diff options
| -rw-r--r-- | drivers/ide/alim15x3.c | 2 | ||||
| -rw-r--r-- | drivers/ide/ide-io.c | 4 | ||||
| -rw-r--r-- | drivers/ide/ide-iops.c | 13 | ||||
| -rw-r--r-- | drivers/ide/ide-taskfile.c | 10 | ||||
| -rw-r--r-- | kernel/irq/manage.c | 1 |
5 files changed, 14 insertions, 16 deletions
diff --git a/drivers/ide/alim15x3.c b/drivers/ide/alim15x3.c index 36f76e28a0bf..3265970aee34 100644 --- a/drivers/ide/alim15x3.c +++ b/drivers/ide/alim15x3.c @@ -323,9 +323,9 @@ out: pci_write_config_byte(dev, 0x53, tmpbyte); } + local_irq_restore(flags); pci_dev_put(north); pci_dev_put(isa_dev); - local_irq_restore(flags); return 0; } diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index 6f25da56a169..a444bad7a2aa 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -659,8 +659,7 @@ void ide_timer_expiry (struct timer_list *t) spin_unlock(&hwif->lock); /* disable_irq_nosync ?? */ disable_irq(hwif->irq); - /* local CPU only, as if we were handling an interrupt */ - local_irq_disable(); + if (hwif->polling) { startstop = handler(drive); } else if (drive_is_ready(drive)) { @@ -679,6 +678,7 @@ void ide_timer_expiry (struct timer_list *t) startstop = ide_error(drive, "irq timeout", hwif->tp_ops->read_status(hwif)); } + /* Disable interrupts again, `handler' might have enabled it */ spin_lock_irq(&hwif->lock); enable_irq(hwif->irq); if (startstop == ide_stopped && hwif->polling == 0) { diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c index 210a0887dd29..d55e9ebd5628 100644 --- a/drivers/ide/ide-iops.c +++ b/drivers/ide/ide-iops.c @@ -108,6 +108,7 @@ int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad, ide_hwif_t *hwif = drive->hwif; const struct ide_tp_ops *tp_ops = hwif->tp_ops; unsigned long flags; + bool irqs_threaded = force_irqthreads; int i; u8 stat; @@ -115,8 +116,10 @@ int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad, stat = tp_ops->read_status(hwif); if (stat & ATA_BUSY) { - local_save_flags(flags); - local_irq_enable_in_hardirq(); + if (!irqs_threaded) { + local_save_flags(flags); + local_irq_enable_in_hardirq(); + } timeout += jiffies; while ((stat = tp_ops->read_status(hwif)) & ATA_BUSY) { if (time_after(jiffies, timeout)) { @@ -129,12 +132,14 @@ int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad, if ((stat & ATA_BUSY) == 0) break; - local_irq_restore(flags); + if (!irqs_threaded) + local_irq_restore(flags); *rstat = stat; return -EBUSY; } } - local_irq_restore(flags); + if (!irqs_threaded) + local_irq_restore(flags); } /* * Allow status to settle, then read it again. diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c index c034cd965831..89b29028d315 100644 --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -237,7 +237,6 @@ void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, while (len) { unsigned nr_bytes = min(len, cursg->length - cmd->cursg_ofs); - int page_is_high; page = sg_page(cursg); offset = cursg->offset + cmd->cursg_ofs; @@ -248,10 +247,6 @@ void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, nr_bytes = min_t(unsigned, nr_bytes, (PAGE_SIZE - offset)); - page_is_high = PageHighMem(page); - if (page_is_high) - local_irq_save(flags); - buf = kmap_atomic(page) + offset; cmd->nleft -= nr_bytes; @@ -270,9 +265,6 @@ void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, kunmap_atomic(buf); - if (page_is_high) - local_irq_restore(flags); - len -= nr_bytes; } } @@ -413,7 +405,7 @@ static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, return startstop; } - if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0) + if (!force_irqthreads && (drive->dev_flags & IDE_DFLAG_UNMASK) == 0) local_irq_disable(); ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE); diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index e3336d904f64..4c2ef8084e32 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -24,6 +24,7 @@ #ifdef CONFIG_IRQ_FORCED_THREADING __read_mostly bool force_irqthreads; +EXPORT_SYMBOL_GPL(force_irqthreads); static int __init setup_forced_irqthreads(char *arg) { |