[PATCH v2][REPOST] drivers: base: cacheinfo: use OF property_read_u32 instead of get_property,read_number

[Sudeep Holla]

of_property_read_u32 searches for a property in a device node and read
a 32-bit value from it. Instead of using of_get_property to get the
property and then read 32-bit value using of_read_number, we can
simplify it by using of_property_read_u32.

Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Suggested-by: Andy Shevchenko <andy.shevche...@gmail.com>
Signed-off-by: Sudeep Holla <sudeep.ho...@arm.com>
---
 drivers/base/cacheinfo.c | 24 ++++++++++--------------
 1 file changed, 10 insertions(+), 14 deletions(-)

Hi Greg,

Can you pick this up for v4.19 ? It was too late for v4.18 and was not
pulled with other changes to this file. Just reposting the same, Andy
did say LGTM.

Regards,
Sudeep

diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
index 2880e2ab01f5..5d5b5988e88b 100644
--- a/drivers/base/cacheinfo.c
+++ b/drivers/base/cacheinfo.c
@@ -74,52 +74,48 @@ static inline int get_cacheinfo_idx(enum cache_type type)
 static void cache_size(struct cacheinfo *this_leaf, struct device_node *np)
 {
        const char *propname;
-       const __be32 *cache_size;
        int ct_idx;
 
        ct_idx = get_cacheinfo_idx(this_leaf->type);
        propname = cache_type_info[ct_idx].size_prop;
 
-       cache_size = of_get_property(np, propname, NULL);
-       if (cache_size)
-               this_leaf->size = of_read_number(cache_size, 1);
+       if (of_property_read_u32(np, propname, &this_leaf->size))
+               this_leaf->size = 0;
 }
 
 /* not cache_line_size() because that's a macro in include/linux/cache.h */
 static void cache_get_line_size(struct cacheinfo *this_leaf,
                                struct device_node *np)
 {
-       const __be32 *line_size;
        int i, lim, ct_idx;
 
        ct_idx = get_cacheinfo_idx(this_leaf->type);
        lim = ARRAY_SIZE(cache_type_info[ct_idx].line_size_props);
 
        for (i = 0; i < lim; i++) {
+               int ret;
+               u32 line_size;
                const char *propname;
 
                propname = cache_type_info[ct_idx].line_size_props[i];
-               line_size = of_get_property(np, propname, NULL);
-               if (line_size)
+               ret = of_property_read_u32(np, propname, &line_size);
+               if (!ret) {
+                       this_leaf->coherency_line_size = line_size;
                        break;
+               }
        }
-
-       if (line_size)
-               this_leaf->coherency_line_size = of_read_number(line_size, 1);
 }
 
 static void cache_nr_sets(struct cacheinfo *this_leaf, struct device_node *np)
 {
        const char *propname;
-       const __be32 *nr_sets;
        int ct_idx;
 
        ct_idx = get_cacheinfo_idx(this_leaf->type);
        propname = cache_type_info[ct_idx].nr_sets_prop;
 
-       nr_sets = of_get_property(np, propname, NULL);
-       if (nr_sets)
-               this_leaf->number_of_sets = of_read_number(nr_sets, 1);
+       if (of_property_read_u32(np, propname, &this_leaf->number_of_sets))
+               this_leaf->number_of_sets = 0;
 }
 
 static void cache_associativity(struct cacheinfo *this_leaf)
-- 
2.7.4