From abdaa77b18480361f3565d958a2acffad268c39c Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Mon, 4 Apr 2016 17:49:21 +0200 Subject: of: Introduce of_phandle_iterator_args() This helper function can be used to copy the arguments of a phandle to an array. Signed-off-by: Joerg Roedel Signed-off-by: Rob Herring --- drivers/of/base.c | 29 +++++++++++++++++++++++------ 1 file changed, 23 insertions(+), 6 deletions(-) (limited to 'drivers/of') diff --git a/drivers/of/base.c b/drivers/of/base.c index ea5a13d3c5a5..e87e21df19d8 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -1534,6 +1534,23 @@ err: return -EINVAL; } +int of_phandle_iterator_args(struct of_phandle_iterator *it, + uint32_t *args, + int size) +{ + int i, count; + + count = it->cur_count; + + if (WARN_ON(size < count)) + count = size; + + for (i = 0; i < count; i++) + args[i] = be32_to_cpup(it->cur++); + + return count; +} + static int __of_parse_phandle_with_args(const struct device_node *np, const char *list_name, const char *cells_name, @@ -1557,13 +1574,13 @@ static int __of_parse_phandle_with_args(const struct device_node *np, goto err; if (out_args) { - int i; - if (WARN_ON(it.cur_count > MAX_PHANDLE_ARGS)) - it.cur_count = MAX_PHANDLE_ARGS; + int c; + + c = of_phandle_iterator_args(&it, + out_args->args, + MAX_PHANDLE_ARGS); out_args->np = it.node; - out_args->args_count = it.cur_count; - for (i = 0; i < it.cur_count; i++) - out_args->args[i] = be32_to_cpup(it.cur++); + out_args->args_count = c; } else { of_node_put(it.node); } -- cgit v1.2.3-55-g7522