[PATCH 3/3] reset: socfpga: use readl/writel_relaxed
Philipp Zabel
p.zabel at pengutronix.de
Tue Jul 5 03:17:52 PDT 2016
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 at pengutronix.de>
---
drivers/reset/reset-socfpga.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/reset/reset-socfpga.c b/drivers/reset/reset-socfpga.c
index 78ebf84..4a65128 100644
--- a/drivers/reset/reset-socfpga.c
+++ b/drivers/reset/reset-socfpga.c
@@ -44,8 +44,8 @@ static int socfpga_reset_assert(struct reset_controller_dev *rcdev,
spin_lock_irqsave(&data->lock, flags);
- reg = readl(data->membase + (bank * NR_BANKS));
- writel(reg | BIT(offset), data->membase + (bank * NR_BANKS));
+ reg = readl_relaxed(data->membase + (bank * NR_BANKS));
+ writel_relaxed(reg | BIT(offset), data->membase + (bank * NR_BANKS));
spin_unlock_irqrestore(&data->lock, flags);
return 0;
@@ -65,8 +65,8 @@ static int socfpga_reset_deassert(struct reset_controller_dev *rcdev,
spin_lock_irqsave(&data->lock, flags);
- reg = readl(data->membase + (bank * NR_BANKS));
- writel(reg & ~BIT(offset), data->membase + (bank * NR_BANKS));
+ reg = readl_relaxed(data->membase + (bank * NR_BANKS));
+ writel_relaxed(reg & ~BIT(offset), data->membase + (bank * NR_BANKS));
spin_unlock_irqrestore(&data->lock, flags);
--
2.8.1
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