diff options
| -rw-r--r-- | drivers/ide/ide-io.c | 25 | ||||
| -rw-r--r-- | include/linux/ide.h | 1 |
2 files changed, 16 insertions, 10 deletions
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index 1d63159fc97..43bf43d802c 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -726,7 +726,7 @@ void do_ide_request(struct request_queue *q) if (!ide_lock_hwgroup(hwgroup)) { ide_hwif_t *prev_port; repeat: - prev_port = hwgroup->hwif; + prev_port = hwif->host->cur_port; hwgroup->rq = NULL; if (drive->dev_flags & IDE_DFLAG_SLEEPING) { @@ -736,15 +736,17 @@ repeat: } } - if (hwif != prev_port) { + if ((hwif->host->host_flags & IDE_HFLAG_SERIALIZE) && + hwif != prev_port) { /* * set nIEN for previous port, drives in the * quirk_list may not like intr setups/cleanups */ - if (hwgroup->drive->quirk_list == 0) + if (prev_port && hwgroup->drive->quirk_list == 0) prev_port->tp_ops->set_irq(prev_port, 0); + + hwif->host->cur_port = hwif; } - hwgroup->hwif = hwif; hwgroup->drive = drive; drive->dev_flags &= ~(IDE_DFLAG_SLEEPING | IDE_DFLAG_PARKED); @@ -976,7 +978,7 @@ void ide_timer_expiry (unsigned long data) /** * unexpected_intr - handle an unexpected IDE interrupt * @irq: interrupt line - * @hwgroup: hwgroup being processed + * @hwif: port being processed * * There's nothing really useful we can do with an unexpected interrupt, * other than reading the status register (to clear it), and logging it. @@ -1005,11 +1007,11 @@ void ide_timer_expiry (unsigned long data) * is doing the current command, but we don't know which hwif burped * mysteriously. */ - -static void unexpected_intr (int irq, ide_hwgroup_t *hwgroup) + +static void unexpected_intr(int irq, ide_hwif_t *hwif) { + ide_hwgroup_t *hwgroup = hwif->hwgroup; u8 stat; - ide_hwif_t *hwif = hwgroup->hwif; /* * handle the unexpected interrupt @@ -1044,7 +1046,7 @@ static void unexpected_intr (int irq, ide_hwgroup_t *hwgroup) * not need to override it. If you do be aware it is subtle in * places * - * hwgroup->hwif is the interface in the group currently performing + * hwif is the interface in the group currently performing * a command. hwgroup->drive is the drive and hwgroup->handler is * the IRQ handler to call. As we issue a command the handlers * step through multiple states, reassigning the handler to the @@ -1070,6 +1072,9 @@ irqreturn_t ide_intr (int irq, void *dev_id) irqreturn_t irq_ret = IRQ_NONE; int plug_device = 0; + if (hwif->host->host_flags & IDE_HFLAG_SERIALIZE) + hwif = hwif->host->cur_port; + spin_lock_irqsave(&hwgroup->lock, flags); if (!ide_ack_intr(hwif)) @@ -1099,7 +1104,7 @@ irqreturn_t ide_intr (int irq, void *dev_id) * Probably not a shared PCI interrupt, * so we can safely try to do something about it: */ - unexpected_intr(irq, hwgroup); + unexpected_intr(irq, hwif); #ifdef CONFIG_BLK_DEV_IDEPCI } else { /* diff --git a/include/linux/ide.h b/include/linux/ide.h index db5ef8ae1ab..3de13df8bce 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -852,6 +852,7 @@ struct ide_host { unsigned int (*init_chipset)(struct pci_dev *); unsigned long host_flags; void *host_priv; + ide_hwif_t *cur_port; /* for hosts requiring serialization */ }; /* |