From: Artur Świgoń a.swigon@samsung.com
This patch relaxes the condition in of_icc_get_from_provider() so that it is no longer required to set #interconnect-cells = <1> in the DT. In case of the devfreq driver for exynos-bus, #interconnect-cells is always zero.
Signed-off-by: Artur Świgoń a.swigon@samsung.com [digetx@gmail.com: added cells_num checking for of_icc_xlate_onecell()] Signed-off-by: Dmitry Osipenko digetx@gmail.com --- drivers/interconnect/core.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index e5f998744501..cb143421ca67 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -339,7 +339,7 @@ static struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec) struct icc_node *node = ERR_PTR(-EPROBE_DEFER); struct icc_provider *provider;
- if (!spec || spec->args_count != 1) + if (!spec) return ERR_PTR(-EINVAL);
mutex_lock(&icc_lock); @@ -967,6 +967,15 @@ EXPORT_SYMBOL_GPL(icc_nodes_remove); */ int icc_provider_add(struct icc_provider *provider) { + struct device_node *np = provider->dev->of_node; + u32 cells_num; + int err; + + err = of_property_read_u32(np, "#interconnect-cells", &cells_num); + if (WARN_ON(err)) + return err; + if (WARN_ON(provider->xlate == of_icc_xlate_onecell && cells_num != 1)) + return -EINVAL; if (WARN_ON(!provider->set)) return -EINVAL; if (WARN_ON(!provider->xlate))