Quoting Yixun Lan (2018-03-27 19:50:45) > diff --git a/drivers/clk/meson/gxbb-aoclk.c b/drivers/clk/meson/gxbb-aoclk.c > index 9ec23ae9a219..5a922639a264 100644 > --- a/drivers/clk/meson/gxbb-aoclk.c > +++ b/drivers/clk/meson/gxbb-aoclk.c > @@ -165,38 +135,39 @@ static int gxbb_aoclkc_probe(struct platform_device > *pdev) > return -ENODEV; > } > > - /* Reset Controller */ > - rstc->regmap = regmap; > - rstc->data = gxbb_aoclk_reset; > - rstc->reset.ops = &gxbb_aoclk_reset_ops; > - rstc->reset.nr_resets = ARRAY_SIZE(gxbb_aoclk_reset); > - rstc->reset.of_node = dev->of_node; > - ret = devm_reset_controller_register(dev, &rstc->reset); > - > - /* > - * Populate regmap and register all clks > - */ > - for (clkid = 0; clkid < ARRAY_SIZE(gxbb_aoclk_gate); clkid++) { > - gxbb_aoclk_gate[clkid]->map = regmap; > - > - ret = devm_clk_hw_register(dev, > - > gxbb_aoclk_onecell_data.hws[clkid]); > - if (ret) > - return ret; > - } > - > /* Specific clocks */ > cec_32k_ao.regmap = regmap; > ret = devm_clk_hw_register(dev, &cec_32k_ao.hw); > - if (ret) > + if (ret) { > + dev_err(&pdev->dev, "clk cec_32k_ao register failed.\n"); > return ret; > + } > + > + return 0; > +} > + > +static struct meson_aoclk_data gxbb_aoclkc_data = {
Can this be const? > + .reset_reg = AO_RTI_GEN_CNTL_REG0, > + .num_reset = ARRAY_SIZE(gxbb_aoclk_reset), > + .reset = gxbb_aoclk_reset, > + .num_clks = ARRAY_SIZE(gxbb_aoclk_gate), > + .clks = gxbb_aoclk_gate, > + .hw_data = &gxbb_aoclk_onecell_data, > +}; > + > diff --git a/drivers/clk/meson/meson-aoclk.c b/drivers/clk/meson/meson-aoclk.c > new file mode 100644 > index 000000000000..36067c801f7b > --- /dev/null > +++ b/drivers/clk/meson/meson-aoclk.c > @@ -0,0 +1,79 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* > + * Amlogic Meson-AXG Clock Controller Driver > + * > + * Copyright (c) 2016 BayLibre, SAS. > + * Author: Neil Armstrong <narmstr...@baylibre.com> > + * > + * Copyright (c) 2018 Amlogic, inc. > + * Author: Qiufang Dai <qiufang....@amlogic.com> > + * Author: Yixun Lan <yixun....@amlogic.com> > + */ > + > +#include <linux/platform_device.h> > +#include <linux/reset-controller.h> > +#include <linux/mfd/syscon.h> > +#include <linux/init.h> > +#include <linux/of_device.h> > +#include "clk-regmap.h" > +#include "meson-aoclk.h" > + > +static int meson_aoclk_do_reset(struct reset_controller_dev *rcdev, > + unsigned long id) > +{ > + struct meson_aoclk_reset_controller *rstc = > + container_of(rcdev, struct meson_aoclk_reset_controller, > reset); > + > + return regmap_write(rstc->regmap, rstc->data->reset_reg, > + BIT(rstc->data->reset[id])); > +} > + > +static const struct reset_control_ops meson_aoclk_reset_ops = { > + .reset = meson_aoclk_do_reset, > +}; > + > +int meson_aoclkc_probe(struct platform_device *pdev) > +{ > + struct meson_aoclk_reset_controller *rstc; > + struct meson_aoclk_data *data; > + struct device *dev = &pdev->dev; > + struct regmap *regmap; > + int ret, clkid; > + > + data = (struct meson_aoclk_data *) > + of_device_get_match_data(dev); > + if (!data) > + return -ENODEV; > + > + rstc = devm_kzalloc(dev, sizeof(*rstc), GFP_KERNEL); > + if (!rstc) > + return -ENOMEM; > + > + regmap = syscon_node_to_regmap(of_get_parent(dev->of_node)); > + if (IS_ERR(regmap)) { > + dev_err(dev, "failed to get regmap\n"); > + return -ENODEV; > + } > + > + /* Reset Controller */ > + rstc->data = data; > + rstc->regmap = regmap; > + rstc->reset.ops = &meson_aoclk_reset_ops; > + rstc->reset.nr_resets = data->num_reset, > + rstc->reset.of_node = dev->of_node; > + ret = devm_reset_controller_register(dev, &rstc->reset); Please check the return value here. > + > + /* > + * Populate regmap and register all clks > + */ > + for (clkid = 0; clkid < data->num_clks; clkid++) { > + data->clks[clkid]->map = regmap; > + > + ret = devm_clk_hw_register(dev, data->hw_data->hws[clkid]); > + if (ret) > + return ret; > + } > + > + return of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get, > + data->hw_data); Use devm_ variant? I suppose because code is moving in this patch that it would be better to make improvements in another patch so that this patch is a pure code movement change instead of a movement + improvement change.