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Subject[PATCH] of: reserved-memory: remove duplicated call to of_get_flat_dt_prop() for no-map node
Date
From: Yue Hu <huyue2@yulong.com>

Just use nomap instead of the second call to of_get_flat_dt_prop(). And
change nomap as a bool type due to != NULL operator. Also, correct comment
about node of 'align' -> 'alignment'.

Signed-off-by: Yue Hu <huyue2@yulong.com>
---
drivers/of/of_reserved_mem.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 6877080..c255c7e 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -69,7 +69,7 @@ void __init fdt_reserved_mem_save_node(unsigned long node, const char *uname,

/**
* __reserved_mem_alloc_size() - allocate reserved memory described by
- * 'size', 'align' and 'alloc-ranges' properties.
+ * 'size', 'alignment' and 'alloc-ranges' properties.
*/
static int __init __reserved_mem_alloc_size(unsigned long node,
const char *uname, phys_addr_t *res_base, phys_addr_t *res_size)
@@ -79,7 +79,7 @@ static int __init __reserved_mem_alloc_size(unsigned long node,
phys_addr_t base = 0, align = 0, size;
int len;
const __be32 *prop;
- int nomap;
+ bool nomap;
int ret;

prop = of_get_flat_dt_prop(node, "size", &len);
@@ -92,8 +92,6 @@ static int __init __reserved_mem_alloc_size(unsigned long node,
}
size = dt_mem_next_cell(dt_root_size_cells, &prop);

- nomap = of_get_flat_dt_prop(node, "no-map", NULL) != NULL;
-
prop = of_get_flat_dt_prop(node, "alignment", &len);
if (prop) {
if (len != dt_root_addr_cells * sizeof(__be32)) {
@@ -104,11 +102,13 @@ static int __init __reserved_mem_alloc_size(unsigned long node,
align = dt_mem_next_cell(dt_root_addr_cells, &prop);
}

+ nomap = of_get_flat_dt_prop(node, "no-map", NULL) != NULL;
+
/* Need adjust the alignment to satisfy the CMA requirement */
if (IS_ENABLED(CONFIG_CMA)
&& of_flat_dt_is_compatible(node, "shared-dma-pool")
&& of_get_flat_dt_prop(node, "reusable", NULL)
- && !of_get_flat_dt_prop(node, "no-map", NULL)) {
+ && !nomap) {
unsigned long order =
max_t(unsigned long, MAX_ORDER - 1, pageblock_order);

@@ -247,7 +247,7 @@ void __init fdt_init_reserved_mem(void)
int len;
const __be32 *prop;
int err = 0;
- int nomap;
+ bool nomap;

nomap = of_get_flat_dt_prop(node, "no-map", NULL) != NULL;
prop = of_get_flat_dt_prop(node, "phandle", &len);
--
1.9.1
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