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Subject[PATCH v8 02/21] pinctrl: tegra: Add write barrier after all pinctrl register writes
Date
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;
}

--
2.7.4
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