09.08.2019 2:46, Sowjanya Komatineni пишет: > This patch adds write barrier after all pinctrl register writes > during resume to make sure all pinctrl changes are complete. > > Signed-off-by: Sowjanya Komatineni <skomatineni@xxxxxxxxxx> > --- > drivers/pinctrl/tegra/pinctrl-tegra.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.c b/drivers/pinctrl/tegra/pinctrl-tegra.c > index 982ee634b3b1..f49fe29fb6df 100644 > --- a/drivers/pinctrl/tegra/pinctrl-tegra.c > +++ b/drivers/pinctrl/tegra/pinctrl-tegra.c > @@ -677,6 +677,8 @@ static int tegra_pinctrl_resume(struct device *dev) > writel_relaxed(*backup_regs++, regs++); > } > > + /* make sure all the pinmux register writes are complete */ > + wmb(); > return 0; > } > > Reviewed-by: Dmitry Osipenko <digetx@xxxxxxxxx>
