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![Arnd Bergmann](/assets/img/avatar_default.png)
Nesting container_of() causes warnings with W=2, which is annoying if it happens in headers and fills the build log like: In file included from drivers/clk/qcom/clk-alpha-pll.c:6: drivers/clk/qcom/clk-alpha-pll.c: In function 'clk_alpha_pll_hwfsm_enable': include/linux/kernel.h:852:8: warning: declaration of '__mptr' shadows a previous local [-Wshadow] 852 | void *__mptr = (void *)(ptr); \ | ^~~~~~ drivers/clk/qcom/clk-alpha-pll.c:155:31: note: in expansion of macro 'container_of' 155 | #define to_clk_alpha_pll(_hw) container_of(to_clk_regmap(_hw), \ | ^~~~~~~~~~~~ drivers/clk/qcom/clk-regmap.h:27:28: note: in expansion of macro 'container_of' 27 | #define to_clk_regmap(_hw) container_of(_hw, struct clk_regmap, hw) | ^~~~~~~~~~~~ drivers/clk/qcom/clk-alpha-pll.c:155:44: note: in expansion of macro 'to_clk_regmap' 155 | #define to_clk_alpha_pll(_hw) container_of(to_clk_regmap(_hw), \ | ^~~~~~~~~~~~~ drivers/clk/qcom/clk-alpha-pll.c:254:30: note: in expansion of macro 'to_clk_alpha_pll' 254 | struct clk_alpha_pll *pll = to_clk_alpha_pll(hw); | ^~~~~~~~~~~~~~~~ include/linux/kernel.h:852:8: note: shadowed declaration is here 852 | void *__mptr = (void *)(ptr); \ | ^~~~~~ Redefine two copies of the to_clk_regmap() macro as inline functions to avoid a lot of these. Fixes:ea11dda9e0
("clk: meson: add regmap clocks") Fixes:085d7a4554
("clk: qcom: Add a regmap type clock struct") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20201026161411.3708639-1-arnd@kernel.org Acked-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2014, The Linux Foundation. All rights reserved. */
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#ifndef __QCOM_CLK_REGMAP_H__
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#define __QCOM_CLK_REGMAP_H__
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#include <linux/clk-provider.h>
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struct regmap;
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/**
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* struct clk_regmap - regmap supporting clock
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* @hw: handle between common and hardware-specific interfaces
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* @regmap: regmap to use for regmap helpers and/or by providers
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* @enable_reg: register when using regmap enable/disable ops
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* @enable_mask: mask when using regmap enable/disable ops
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* @enable_is_inverted: flag to indicate set enable_mask bits to disable
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* when using clock_enable_regmap and friends APIs.
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*/
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struct clk_regmap {
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struct clk_hw hw;
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struct regmap *regmap;
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unsigned int enable_reg;
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unsigned int enable_mask;
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bool enable_is_inverted;
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};
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static inline struct clk_regmap *to_clk_regmap(struct clk_hw *hw)
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{
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return container_of(hw, struct clk_regmap, hw);
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}
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int clk_is_enabled_regmap(struct clk_hw *hw);
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int clk_enable_regmap(struct clk_hw *hw);
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void clk_disable_regmap(struct clk_hw *hw);
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int devm_clk_register_regmap(struct device *dev, struct clk_regmap *rclk);
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#endif
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