[PATCH 2/2] ARM: cache-uniphier: clean up active way setup code

[Masahiro Yamada]

Now, the active way setup function is called with a fixed value zero
for the second argument.  The code can be simpler.

Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com>
---

KernelVersion: 4.10-rc1


 arch/arm/mm/cache-uniphier.c | 23 +++++++++--------------
 1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/arch/arm/mm/cache-uniphier.c b/arch/arm/mm/cache-uniphier.c
index dfe97b4..f57b080 100644
--- a/arch/arm/mm/cache-uniphier.c
+++ b/arch/arm/mm/cache-uniphier.c
@@ -15,6 +15,7 @@
 
 #define pr_fmt(fmt)            "uniphier: " fmt
 
+#include <linux/bitops.h>
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/log2.h>
@@ -71,8 +72,7 @@
  * @ctrl_base: virtual base address of control registers
  * @rev_base: virtual base address of revision registers
  * @op_base: virtual base address of operation registers
- * @way_present_mask: each bit specifies if the way is present
- * @way_locked_mask: each bit specifies if the way is locked
+ * @way_mask: each bit specifies if the way is present
  * @nsets: number of associativity sets
  * @line_size: line size in bytes
  * @range_op_max_size: max size that can be handled by a single range operation
@@ -83,8 +83,7 @@ struct uniphier_cache_data {
        void __iomem *rev_base;
        void __iomem *op_base;
        void __iomem *way_ctrl_base;
-       u32 way_present_mask;
-       u32 way_locked_mask;
+       u32 way_mask;
        u32 nsets;
        u32 line_size;
        u32 range_op_max_size;
@@ -234,17 +233,13 @@ static void __uniphier_cache_enable(struct 
uniphier_cache_data *data, bool on)
        writel_relaxed(val, data->ctrl_base + UNIPHIER_SSCC);
 }
 
-static void __init __uniphier_cache_set_locked_ways(
-                                       struct uniphier_cache_data *data,
-                                       u32 way_mask)
+static void __init __uniphier_cache_set_active_ways(
+                                       struct uniphier_cache_data *data)
 {
        unsigned int cpu;
 
-       data->way_locked_mask = way_mask & data->way_present_mask;
-
        for_each_possible_cpu(cpu)
-               writel_relaxed(~data->way_locked_mask & data->way_present_mask,
-                              data->way_ctrl_base + 4 * cpu);
+               writel_relaxed(data->way_mask, data->way_ctrl_base + 4 * cpu);
 }
 
 static void uniphier_cache_maint_range(unsigned long start, unsigned long end,
@@ -307,7 +302,7 @@ static void __init uniphier_cache_enable(void)
 
        list_for_each_entry(data, &uniphier_cache_list, list) {
                __uniphier_cache_enable(data, true);
-               __uniphier_cache_set_locked_ways(data, 0);
+               __uniphier_cache_set_active_ways(data);
        }
 }
 
@@ -382,8 +377,8 @@ static int __init __uniphier_cache_init(struct device_node 
*np,
                goto err;
        }
 
-       data->way_present_mask =
-               ((u32)1 << cache_size / data->nsets / data->line_size) - 1;
+       data->way_mask = GENMASK(cache_size / data->nsets / data->line_size - 1,
+                                0);
 
        data->ctrl_base = of_iomap(np, 0);
        if (!data->ctrl_base) {
-- 
2.7.4