On Wed, Feb 20, 2019 at 02:48:41PM +0100, Thierry Reding wrote: > From: Thierry Reding <treding@xxxxxxxxxx> > > During initialization, the host and super-speed power domains will > contain an ERR_PTR() encoded error code rather than being NULL. To > avoid a crash, use a !IS_ERR_OR_NULL() condition during cleanup. > > Signed-off-by: Thierry Reding <treding@xxxxxxxxxx> > --- > drivers/usb/host/xhci-tegra.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c > index 938ff06c0349..efb0cad8710e 100644 > --- a/drivers/usb/host/xhci-tegra.c > +++ b/drivers/usb/host/xhci-tegra.c > @@ -941,9 +941,9 @@ static void tegra_xusb_powerdomain_remove(struct device *dev, > device_link_del(tegra->genpd_dl_ss); > if (tegra->genpd_dl_host) > device_link_del(tegra->genpd_dl_host); > - if (tegra->genpd_dev_ss) > + if (!IS_ERR_OR_NULL(tegra->genpd_dev_ss)) > dev_pm_domain_detach(tegra->genpd_dev_ss, true); > - if (tegra->genpd_dev_host) > + if (!IS_ERR_OR_NULL(tegra->genpd_dev_host)) > dev_pm_domain_detach(tegra->genpd_dev_host, true); > } Should this go to older kernels? If so, any hint as to what commit this "fixes:"? thanks, greg k-h
