On Mon, 25 May 2015, Andy Shevchenko wrote: > From: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> > > If the parent is still suspended when a driver probe, > remove or shutdown is attempted, the result may be a > failure. > > For example, if the parent is a PCI MFD device that has been > suspended when we try to probe our device, any register > reads will return 0xffffffff. > > To fix the problem, making sure the parent is always awake > before using driver probe, remove or shutdown. > > Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> > Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> > --- > drivers/base/platform.c | 21 ++++++++++++++++++++- Why make the changes here rather than in dd.c? Is there something special about platform devices? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
