diff options
Diffstat (limited to 'drivers/ata/sata_sil.c')
| -rw-r--r-- | drivers/ata/sata_sil.c | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/drivers/ata/sata_sil.c b/drivers/ata/sata_sil.c index 4e6e381279c..025622b14ef 100644 --- a/drivers/ata/sata_sil.c +++ b/drivers/ata/sata_sil.c @@ -390,23 +390,28 @@ static void sil_host_intr(struct ata_port *ap, u32 bmdma2) sil_scr_read(ap, SCR_ERROR, &serror); sil_scr_write(ap, SCR_ERROR, serror); - /* Trigger hotplug and accumulate SError only if the - * port isn't already frozen. Otherwise, PHY events - * during hardreset makes controllers with broken SIEN - * repeat probing needlessly. + /* Sometimes spurious interrupts occur, double check + * it's PHYRDY CHG. */ - if (!(ap->pflags & ATA_PFLAG_FROZEN)) { - ata_ehi_hotplugged(&ap->link.eh_info); - ap->link.eh_info.serror |= serror; + if (serror & SERR_PHYRDY_CHG) { + /* Trigger hotplug and accumulate SError only + * if the port isn't already frozen. + * Otherwise, PHY events during hardreset + * makes controllers with broken SIEN repeat + * probing needlessly. + */ + if (!(ap->pflags & ATA_PFLAG_FROZEN)) { + ata_ehi_hotplugged(&ap->link.eh_info); + ap->link.eh_info.serror |= serror; + } + goto freeze; } - goto freeze; + if (!(bmdma2 & SIL_DMA_COMPLETE)) + return; } - if (unlikely(!qc)) - goto freeze; - - if (unlikely(qc->tf.flags & ATA_TFLAG_POLLING)) { + if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) { /* this sometimes happens, just clear IRQ */ ata_chk_status(ap); return; |