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of: base: use of_property_read_u32()

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of_n_{addr|size}_cells() predate of_property_read_u32(), so they have to
basically open-code it. Using the modern DT API saves several LoCs and also
adds some prop sanity checks as a bonus...

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Sergei Shtylyov 2017-07-23 19:55:47 +03:00 committed by Rob Herring
parent fda9f5d4a9
commit 8832963d89
1 changed files with 6 additions and 8 deletions
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14
drivers/of/base.c
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@ -60,14 +60,13 @@ DEFINE_RAW_SPINLOCK(devtree_lock);
int of_n_addr_cells(struct device_node *np)
{
const __be32 *ip;
u32 cells;
do {
if (np->parent)
np = np->parent;
ip = of_get_property(np, "#address-cells", NULL);
if (ip)
return be32_to_cpup(ip);
if (!of_property_read_u32(np, "#address-cells", &cells))
return cells;
} while (np->parent);
/* No #address-cells property for the root node */
return OF_ROOT_NODE_ADDR_CELLS_DEFAULT;
@ -76,14 +75,13 @@ EXPORT_SYMBOL(of_n_addr_cells);
int of_n_size_cells(struct device_node *np)
{
const __be32 *ip;
u32 cells;
do {
if (np->parent)
np = np->parent;
ip = of_get_property(np, "#size-cells", NULL);
if (ip)
return be32_to_cpup(ip);
if (!of_property_read_u32(np, "#size-cells", &cells))
return cells;
} while (np->parent);
/* No #size-cells property for the root node */
return OF_ROOT_NODE_SIZE_CELLS_DEFAULT;