The ata port is brought back to full power state during system resume. So its runtime PM status will have to be updated to reflect the actual post-system sleep status. This also fixes below warning during system suspend/resume. WARNING: at /work/linux/drivers/ata/libata-eh.c:4034 ata_scsi_port_error_handler+0x89/0x557() 4034 WARN_ON(!(ap->pflags & ATA_PFLAG_SUSPENDED)); Signed-off-by: Lin Ming <ming.m.lin@xxxxxxxxx> --- drivers/ata/libata-core.c | 18 ++++++++++++++++-- 1 files changed, 16 insertions(+), 2 deletions(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index d55b51e..84aa741 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5298,7 +5298,7 @@ static int ata_port_suspend(struct device *dev) return ata_port_suspend_common(dev); } -static int ata_port_resume(struct device *dev) +static int ata_port_resume_common(struct device *dev) { struct ata_port *ap = to_ata_port(dev); int rc; @@ -5308,6 +5308,20 @@ static int ata_port_resume(struct device *dev) return rc; } +static int ata_port_resume(struct device *dev) +{ + int rc; + + rc = ata_port_resume_common(dev); + if (!rc) { + pm_runtime_disable(dev); + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + } + + return rc; +} + static int ata_port_runtime_idle(struct device *dev) { return pm_runtime_suspend(dev); @@ -5318,7 +5332,7 @@ static const struct dev_pm_ops ata_port_pm_ops = { .resume = ata_port_resume, .runtime_suspend = ata_port_suspend_common, - .runtime_resume = ata_port_resume, + .runtime_resume = ata_port_resume_common, .runtime_idle = ata_port_runtime_idle, }; -- 1.7.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html