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Groups > linux.kernel > #1566429
| From | Geert Uytterhoeven <geert+renesas@glider.be> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 3/4] clk: renesas: cpg-mssr: Rename cpg_mssr_priv.mstp_lock |
| Date | 2017-01-25 10:50 +0100 |
| Message-ID | <t3sng-8uI-27@gated-at.bofh.it> (permalink) |
| References | <t3snf-8uI-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
The spinlock is used to protect Read-Modify-Write register accesses,
which won't be limited to SMSTPCR register accesses.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
---
v2:
- Add Acked-by.
---
drivers/clk/renesas/renesas-cpg-mssr.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/clk/renesas/renesas-cpg-mssr.c b/drivers/clk/renesas/renesas-cpg-mssr.c
index eb8534e5ebf3007d..f1161a585c57e433 100644
--- a/drivers/clk/renesas/renesas-cpg-mssr.c
+++ b/drivers/clk/renesas/renesas-cpg-mssr.c
@@ -98,7 +98,7 @@
*
* @dev: CPG/MSSR device
* @base: CPG/MSSR register block base address
- * @mstp_lock: protects writes to SMSTPCR
+ * @rmw_lock: protects RMW register accesses
* @clks: Array containing all Core and Module Clocks
* @num_core_clks: Number of Core Clocks in clks[]
* @num_mod_clks: Number of Module Clocks in clks[]
@@ -107,7 +107,7 @@
struct cpg_mssr_priv {
struct device *dev;
void __iomem *base;
- spinlock_t mstp_lock;
+ spinlock_t rmw_lock;
struct clk **clks;
unsigned int num_core_clks;
@@ -144,7 +144,7 @@ static int cpg_mstp_clock_endisable(struct clk_hw *hw, bool enable)
dev_dbg(dev, "MSTP %u%02u/%pC %s\n", reg, bit, hw->clk,
enable ? "ON" : "OFF");
- spin_lock_irqsave(&priv->mstp_lock, flags);
+ spin_lock_irqsave(&priv->rmw_lock, flags);
value = readl(priv->base + SMSTPCR(reg));
if (enable)
@@ -153,7 +153,7 @@ static int cpg_mstp_clock_endisable(struct clk_hw *hw, bool enable)
value |= bitmask;
writel(value, priv->base + SMSTPCR(reg));
- spin_unlock_irqrestore(&priv->mstp_lock, flags);
+ spin_unlock_irqrestore(&priv->rmw_lock, flags);
if (!enable)
return 0;
@@ -550,7 +550,7 @@ static int __init cpg_mssr_probe(struct platform_device *pdev)
return -ENOMEM;
priv->dev = dev;
- spin_lock_init(&priv->mstp_lock);
+ spin_lock_init(&priv->rmw_lock);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
priv->base = devm_ioremap_resource(dev, res);
--
1.9.1
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[PATCH v2 0/4] Renesas CPG/MSSR Reset Control Support Geert Uytterhoeven <geert+renesas@glider.be> - 2017-01-25 10:50 +0100 [PATCH v2 3/4] clk: renesas: cpg-mssr: Rename cpg_mssr_priv.mstp_lock Geert Uytterhoeven <geert+renesas@glider.be> - 2017-01-25 10:50 +0100 [PATCH v2 1/4] dt-bindings: clock: renesas: cpg-mssr: Document reset control support Geert Uytterhoeven <geert+renesas@glider.be> - 2017-01-25 10:50 +0100 [PATCH v2 2/4] clk: renesas: cpg-mssr: Document suitability for RZ/G1 Geert Uytterhoeven <geert+renesas@glider.be> - 2017-01-25 10:50 +0100
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