Tony Lindgren <tony@xxxxxxxxxxx> writes: > If a driver PM runtime is disabled via sysfs, and the module is > unloaded, PM runtime can't do anything to disable the device. Let's > let the interconnect disable the device on BUS_NOTIFY_UNBOUND_DRIVER. > > Otherwise omap_device will produce and error on the following module > reload. This can be easily tested with something like: > > # modprobe omap_hsmmc > # echo on > /sys/devices/platform/68000000.ocp/4809c000.mmc/power/control > # rmmod omap_hsmmc > # modprobe omap_hsmmc > > Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> > Cc: Kevin Hilman <khilman@xxxxxxxxxxxx> > Cc: Nishanth Menon <nm@xxxxxx> > Cc: Rafael J. Wysocki <rafael@xxxxxxxxxx> > Cc: Tero Kristo <t-kristo@xxxxxx> > Reported-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> > Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx> Acked-by: Kevin Hilman <khilman@xxxxxxxxxxxx> > --- > arch/arm/mach-omap2/omap_device.c | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c > index ebd8369..f7ff3b9 100644 > --- a/arch/arm/mach-omap2/omap_device.c > +++ b/arch/arm/mach-omap2/omap_device.c > @@ -191,12 +191,22 @@ static int _omap_device_notifier_call(struct notifier_block *nb, > { > struct platform_device *pdev = to_platform_device(dev); > struct omap_device *od; > + int err; > > switch (event) { > case BUS_NOTIFY_DEL_DEVICE: > if (pdev->archdata.od) > omap_device_delete(pdev->archdata.od); > break; > + case BUS_NOTIFY_UNBOUND_DRIVER: > + od = to_omap_device(pdev); > + if (od && (od->_state == OMAP_DEVICE_STATE_ENABLED)) { > + dev_info(dev, "enabled after unload, idling\n"); > + err = omap_device_idle(pdev); > + if (err) > + dev_err(dev, "failed to idle\n"); > + } > + break; > case BUS_NOTIFY_ADD_DEVICE: > if (pdev->dev.of_node) > omap_device_build_from_dt(pdev); -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html