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of: Introduce of_for_each_phandle() helper macro

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With this macro any user can easily iterate over a list of
phandles. The patch also converts __of_parse_phandle_with_args()
to make use of the macro.

The of_count_phandle_with_args() function is not converted,
because the macro hides the return value of of_phandle_iterator_init(),
which is needed in there.

Signed-off-by: Joerg Roedel <[email protected]>
Signed-off-by: Rob Herring <[email protected]>
This commit is contained in:
Joerg Roedel 2016-04-04 17:49:20 +02:00 • committed by Rob Herring
commit f623ce95a5
2 changed files with 7 additions and 6 deletions
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7
drivers/of/base.c
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@ -1543,13 +1543,8 @@ static int __of_parse_phandle_with_args(const struct device_node *np,
struct of_phandle_iterator it;
int rc, cur_index = 0;
rc = of_phandle_iterator_init(&it, np, list_name,
cells_name, cell_count);
if (rc)
return rc;
/* Loop over the phandles until all the requested entry is found */
while ((rc = of_phandle_iterator_next(&it)) == 0) {
of_for_each_phandle(&it, rc, np, list_name, cells_name, cell_count) {
/*
* All of the error cases bail out of the loop, so at
* this point, the parsing is successful. If the requested