On Wed, Dec 14, 2011 at 11:18 AM, Lin Ming <ming.m.lin@xxxxxxxxx> wrote:
> 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>
Hi Alan,
Would you like to Ack this one also?
Thanks,
Lin Ming
> ---
> 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 15a3d4d..8996758 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
>
> --
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