AMBA devices may on some SoCs resides in PM domains. To be able to manage these devices from there, let's try to attach devices to their corresponding PM domain during the probe phase.
To reverse these actions at the remove phase, we try to detach the device from its PM domain. Signed-off-by: Ulf Hansson <[email protected]> --- drivers/amba/bus.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c index 3cf61a1..8f52393 100644 --- a/drivers/amba/bus.c +++ b/drivers/amba/bus.c @@ -182,9 +182,15 @@ static int amba_probe(struct device *dev) int ret; do { + ret = dev_pm_domain_attach(dev, true); + if (ret == -EPROBE_DEFER) + break; + ret = amba_get_enable_pclk(pcdev); - if (ret) + if (ret) { + dev_pm_domain_detach(dev, true); break; + } pm_runtime_get_noresume(dev); pm_runtime_set_active(dev); @@ -199,6 +205,7 @@ static int amba_probe(struct device *dev) pm_runtime_put_noidle(dev); amba_put_disable_pclk(pcdev); + dev_pm_domain_detach(dev, true); } while (0); return ret; @@ -220,6 +227,7 @@ static int amba_remove(struct device *dev) pm_runtime_put_noidle(dev); amba_put_disable_pclk(pcdev); + dev_pm_domain_detach(dev, true); return ret; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
