lkml.org 
[lkml]   [2019]   [Aug]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v8 02/21] pinctrl: tegra: Add write barrier after all pinctrl register writes
From
Date
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@nvidia.com>
> ---
> 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@gmail.com>

\
 
 \ /
  Last update: 2019-08-09 13:40    [W:0.403 / U:24.348 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site