diff options
Diffstat (limited to 'drivers/scsi/sata_nv.c')
| -rw-r--r-- | drivers/scsi/sata_nv.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c index 8fdb2336f6f..945194b7699 100644 --- a/drivers/scsi/sata_nv.c +++ b/drivers/scsi/sata_nv.c @@ -29,6 +29,12 @@ * NV-specific details such as register offsets, SATA phy location, * hotplug info, etc. * + * 0.10 + * - Fixed spurious interrupts issue seen with the Maxtor 6H500F0 500GB + * drive. Also made the check_hotplug() callbacks return whether there + * was a hotplug interrupt or not. This was not the source of the + * spurious interrupts, but is the right thing to do anyway. + * * 0.09 * - Fixed bug introduced by 0.08's MCP51 and MCP55 support. * @@ -124,10 +130,10 @@ static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val); static void nv_host_stop (struct ata_host_set *host_set); static void nv_enable_hotplug(struct ata_probe_ent *probe_ent); static void nv_disable_hotplug(struct ata_host_set *host_set); -static void nv_check_hotplug(struct ata_host_set *host_set); +static int nv_check_hotplug(struct ata_host_set *host_set); static void nv_enable_hotplug_ck804(struct ata_probe_ent *probe_ent); static void nv_disable_hotplug_ck804(struct ata_host_set *host_set); -static void nv_check_hotplug_ck804(struct ata_host_set *host_set); +static int nv_check_hotplug_ck804(struct ata_host_set *host_set); enum nv_host_type { @@ -176,7 +182,7 @@ struct nv_host_desc enum nv_host_type host_type; void (*enable_hotplug)(struct ata_probe_ent *probe_ent); void (*disable_hotplug)(struct ata_host_set *host_set); - void (*check_hotplug)(struct ata_host_set *host_set); + int (*check_hotplug)(struct ata_host_set *host_set); }; static struct nv_host_desc nv_device_tbl[] = { @@ -235,7 +241,6 @@ static struct scsi_host_template nv_sht = { .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, }; static const struct ata_port_operations nv_ops = { @@ -310,12 +315,16 @@ static irqreturn_t nv_interrupt (int irq, void *dev_instance, qc = ata_qc_from_tag(ap, ap->active_tag); if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) handled += ata_host_intr(ap, qc); + else + // No request pending? Clear interrupt status + // anyway, in case there's one pending. + ap->ops->check_status(ap); } } if (host->host_desc->check_hotplug) - host->host_desc->check_hotplug(host_set); + handled += host->host_desc->check_hotplug(host_set); spin_unlock_irqrestore(&host_set->lock, flags); @@ -498,7 +507,7 @@ static void nv_disable_hotplug(struct ata_host_set *host_set) outb(intr_mask, host_set->ports[0]->ioaddr.scr_addr + NV_INT_ENABLE); } -static void nv_check_hotplug(struct ata_host_set *host_set) +static int nv_check_hotplug(struct ata_host_set *host_set) { u8 intr_status; @@ -523,7 +532,11 @@ static void nv_check_hotplug(struct ata_host_set *host_set) if (intr_status & NV_INT_STATUS_SDEV_REMOVED) printk(KERN_WARNING "nv_sata: " "Secondary device removed\n"); + + return 1; } + + return 0; } static void nv_enable_hotplug_ck804(struct ata_probe_ent *probe_ent) @@ -561,7 +574,7 @@ static void nv_disable_hotplug_ck804(struct ata_host_set *host_set) pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval); } -static void nv_check_hotplug_ck804(struct ata_host_set *host_set) +static int nv_check_hotplug_ck804(struct ata_host_set *host_set) { u8 intr_status; @@ -586,7 +599,11 @@ static void nv_check_hotplug_ck804(struct ata_host_set *host_set) if (intr_status & NV_INT_STATUS_SDEV_REMOVED) printk(KERN_WARNING "nv_sata: " "Secondary device removed\n"); + + return 1; } + + return 0; } static int __init nv_init(void) |