diff options
| -rw-r--r-- | drivers/ata/ata_piix.c | 37 | ||||
| -rw-r--r-- | drivers/ata/libata-sff.c | 6 | ||||
| -rw-r--r-- | drivers/ata/sata_mv.c | 3 |
3 files changed, 44 insertions, 2 deletions
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index 54961c0b2c7..ef8b30d577b 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -1289,6 +1289,39 @@ static const int *__devinit piix_init_sata_map(struct pci_dev *pdev, return map; } +static bool piix_no_sidpr(struct ata_host *host) +{ + struct pci_dev *pdev = to_pci_dev(host->dev); + + /* + * Samsung DB-P70 only has three ATA ports exposed and + * curiously the unconnected first port reports link online + * while not responding to SRST protocol causing excessive + * detection delay. + * + * Unfortunately, the system doesn't carry enough DMI + * information to identify the machine but does have subsystem + * vendor and device set. As it's unclear whether the + * subsystem vendor/device is used only for this specific + * board, the port can't be disabled solely with the + * information; however, turning off SIDPR access works around + * the problem. Turn it off. + * + * This problem is reported in bnc#441240. + * + * https://bugzilla.novell.com/show_bug.cgi?id=441420 + */ + if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2920 && + pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG && + pdev->subsystem_device == 0xb049) { + dev_printk(KERN_WARNING, host->dev, + "Samsung DB-P70 detected, disabling SIDPR\n"); + return true; + } + + return false; +} + static int __devinit piix_init_sidpr(struct ata_host *host) { struct pci_dev *pdev = to_pci_dev(host->dev); @@ -1302,6 +1335,10 @@ static int __devinit piix_init_sidpr(struct ata_host *host) if (hpriv->map[i] == IDE) return 0; + /* is it blacklisted? */ + if (piix_no_sidpr(host)) + return 0; + if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR)) return 0; diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 714cb046b59..f93dc029dfd 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -2066,6 +2066,7 @@ static int ata_bus_softreset(struct ata_port *ap, unsigned int devmask, iowrite8(ap->ctl | ATA_SRST, ioaddr->ctl_addr); udelay(20); /* FIXME: flush */ iowrite8(ap->ctl, ioaddr->ctl_addr); + ap->last_ctl = ap->ctl; /* wait the port to become ready */ return ata_sff_wait_after_reset(&ap->link, devmask, deadline); @@ -2190,8 +2191,10 @@ void ata_sff_postreset(struct ata_link *link, unsigned int *classes) } /* set up device control */ - if (ap->ioaddr.ctl_addr) + if (ap->ioaddr.ctl_addr) { iowrite8(ap->ctl, ap->ioaddr.ctl_addr); + ap->last_ctl = ap->ctl; + } } EXPORT_SYMBOL_GPL(ata_sff_postreset); @@ -2534,6 +2537,7 @@ void ata_bus_reset(struct ata_port *ap) if (ap->flags & (ATA_FLAG_SATA_RESET | ATA_FLAG_SRST)) { /* set up device control for ATA_FLAG_SATA_RESET */ iowrite8(ap->ctl, ioaddr->ctl_addr); + ap->last_ctl = ap->ctl; } DPRINTK("EXIT\n"); diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index 7007edd2d45..74b1080d116 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -2218,12 +2218,13 @@ static irqreturn_t mv_interrupt(int irq, void *dev_instance) else handled = mv_host_intr(host, pending_irqs); } - spin_unlock(&host->lock); /* for MSI: unmask; interrupt cause bits will retrigger now */ if (using_msi) writel(hpriv->main_irq_mask, hpriv->main_irq_mask_addr); + spin_unlock(&host->lock); + return IRQ_RETVAL(handled); } |