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[2/3] reset: sunxi: use readl/writel_relaxed

Message ID 1467713872-4051-2-git-send-email-p.zabel@pengutronix.de (mailing list archive)
State New, archived
Headers show

Commit Message

Philipp Zabel July 5, 2016, 10:17 a.m. UTC 
This just removes the rmb()/wmb() pair between register read and
write. Since no relevant reads follow the rmb and no relevant writes
precede the wmb, they should be safe to remove.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 drivers/reset/reset-sunxi.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
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Patch

diff --git a/drivers/reset/reset-sunxi.c b/drivers/reset/reset-sunxi.c
index 3080190..7a35950 100644
--- a/drivers/reset/reset-sunxi.c
+++ b/drivers/reset/reset-sunxi.c
@@ -41,8 +41,8 @@  static int sunxi_reset_assert(struct reset_controller_dev *rcdev,
 
 	spin_lock_irqsave(&data->lock, flags);
 
-	reg = readl(data->membase + (bank * 4));
-	writel(reg & ~BIT(offset), data->membase + (bank * 4));
+	reg = readl_relaxed(data->membase + (bank * 4));
+	writel_relaxed(reg & ~BIT(offset), data->membase + (bank * 4));
 
 	spin_unlock_irqrestore(&data->lock, flags);
 
@@ -62,8 +62,8 @@  static int sunxi_reset_deassert(struct reset_controller_dev *rcdev,
 
 	spin_lock_irqsave(&data->lock, flags);
 
-	reg = readl(data->membase + (bank * 4));
-	writel(reg | BIT(offset), data->membase + (bank * 4));
+	reg = readl_relaxed(data->membase + (bank * 4));
+	writel_relaxed(reg | BIT(offset), data->membase + (bank * 4));
 
 	spin_unlock_irqrestore(&data->lock, flags);