From 311fa6adf92c5110057daa439fdaff012864aa2b Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Fri, 31 Jul 2015 10:20:00 +0100 Subject: [PATCH] PM / Domains: Return -EPROBE_DEFER if we fail to init or turn-on domain When a device is probed, the function dev_pm_domain_attach() is called to see if there is a power-domain that is associated with the device and needs to be turned on. If dev_pm_domain_attach() does not return -EPROBE_DEFER then the device will be probed. For devices using genpd, dev_pm_domain_attach() will call genpd_dev_pm_attach(). If genpd_dev_pm_attach() does not find a power domain associated with the device then it returns an error code not equal to -EPROBE_DEFER to allow the device to be probed. However, if genpd_dev_pm_attach() does find a power-domain that is associated with the device, then it does not return -EPROBE_DEFER on failure and hence the device will still be probed. Furthermore, genpd_dev_pm_attach() does not check the error code returned by pm_genpd_poweron() to see if the power-domain was turned on successfully. Fix this by checking the return code from pm_genpd_poweron() and returning -EPROBE_DEFER from genpd_dev_pm_attach on failure, if there is a power-domain associated with the device. Signed-off-by: Jon Hunter Acked-by: Ulf Hansson Acked-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki --- Reading git-format-patch failed