On Mon, Apr 24, 2017 at 01:42:16PM +0800, Wei Li wrote: > During driver probe procedure, lock on the parent of > platform devices could be removed to make probe in > parallel. > > Signed-off-by: Wei Li <we...@codeaurora.org>
Why? Why does this matter? > --- > drivers/base/dd.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/base/dd.c b/drivers/base/dd.c > index a1fbf55..e238fbc 100644 > --- a/drivers/base/dd.c > +++ b/drivers/base/dd.c > @@ -25,6 +25,7 @@ > #include <linux/async.h> > #include <linux/pm_runtime.h> > #include <linux/pinctrl/devinfo.h> > +#include <linux/platform_device.h> > > #include "base.h" > #include "power/power.h" > @@ -749,13 +750,14 @@ static int __driver_attach(struct device *dev, void > *data) > return ret; > } /* ret > 0 means positive match */ > > - if (dev->parent) /* Needed for USB */ > + if (dev->parent && > + (dev->bus != &platform_bus_type)) /* Needed for USB */ The platform_bus_type check is not needed by USB, right? thanks, greg k-h
