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Date: Sat, 25 Jan 2020 11:48:43 +0800
From: kbuild test robot <lkp@...el.com>
To: Suman Anna <s-anna@...com>
Cc: kbuild-all@...ts.01.org, Lee Jones <lee.jones@...aro.org>,
Arnd Bergmann <arnd@...db.de>,
David Lechner <david@...hnology.com>,
Tony Lindgren <tony@...mide.com>,
Roger Quadros <rogerq@...com>, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
Suman Anna <s-anna@...com>
Subject: Re: [PATCH] mfd: syscon: Use a unique name with regmap_config
Hi Suman,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on ljones-mfd/for-mfd-next]
[also build test WARNING on arm-soc/for-next linux/master linus/master v5.5-rc7 next-20200124]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Suman-Anna/mfd-syscon-Use-a-unique-name-with-regmap_config/20200124-202741
base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next
config: m68k-allmodconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 7.5.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.5.0 make.cross ARCH=m68k
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
drivers/mfd/syscon.c: In function 'of_syscon_register':
>> drivers/mfd/syscon.c:104:55: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type 'resource_size_t {aka unsigned int}' [-Wformat=]
syscon_config.name = kasprintf(GFP_KERNEL, "%pOFn@...x", np, res.start);
~~~^ ~~~~~~~~~
%x
vim +104 drivers/mfd/syscon.c
42
43 static struct syscon *of_syscon_register(struct device_node *np, bool check_clk)
44 {
45 struct clk *clk;
46 struct syscon *syscon;
47 struct regmap *regmap;
48 void __iomem *base;
49 u32 reg_io_width;
50 int ret;
51 struct regmap_config syscon_config = syscon_regmap_config;
52 struct resource res;
53
54 syscon = kzalloc(sizeof(*syscon), GFP_KERNEL);
55 if (!syscon)
56 return ERR_PTR(-ENOMEM);
57
58 if (of_address_to_resource(np, 0, &res)) {
59 ret = -ENOMEM;
60 goto err_map;
61 }
62
63 base = ioremap(res.start, resource_size(&res));
64 if (!base) {
65 ret = -ENOMEM;
66 goto err_map;
67 }
68
69 /* Parse the device's DT node for an endianness specification */
70 if (of_property_read_bool(np, "big-endian"))
71 syscon_config.val_format_endian = REGMAP_ENDIAN_BIG;
72 else if (of_property_read_bool(np, "little-endian"))
73 syscon_config.val_format_endian = REGMAP_ENDIAN_LITTLE;
74 else if (of_property_read_bool(np, "native-endian"))
75 syscon_config.val_format_endian = REGMAP_ENDIAN_NATIVE;
76
77 /*
78 * search for reg-io-width property in DT. If it is not provided,
79 * default to 4 bytes. regmap_init_mmio will return an error if values
80 * are invalid so there is no need to check them here.
81 */
82 ret = of_property_read_u32(np, "reg-io-width", ®_io_width);
83 if (ret)
84 reg_io_width = 4;
85
86 ret = of_hwspin_lock_get_id(np, 0);
87 if (ret > 0 || (IS_ENABLED(CONFIG_HWSPINLOCK) && ret == 0)) {
88 syscon_config.use_hwlock = true;
89 syscon_config.hwlock_id = ret;
90 syscon_config.hwlock_mode = HWLOCK_IRQSTATE;
91 } else if (ret < 0) {
92 switch (ret) {
93 case -ENOENT:
94 /* Ignore missing hwlock, it's optional. */
95 break;
96 default:
97 pr_err("Failed to retrieve valid hwlock: %d\n", ret);
98 /* fall-through */
99 case -EPROBE_DEFER:
100 goto err_regmap;
101 }
102 }
103
> 104 syscon_config.name = kasprintf(GFP_KERNEL, "%pOFn@...x", np, res.start);
105 syscon_config.reg_stride = reg_io_width;
106 syscon_config.val_bits = reg_io_width * 8;
107 syscon_config.max_register = resource_size(&res) - reg_io_width;
108
109 regmap = regmap_init_mmio(NULL, base, &syscon_config);
110 kfree(syscon_config.name);
111 if (IS_ERR(regmap)) {
112 pr_err("regmap init failed\n");
113 ret = PTR_ERR(regmap);
114 goto err_regmap;
115 }
116
117 if (check_clk) {
118 clk = of_clk_get(np, 0);
119 if (IS_ERR(clk)) {
120 ret = PTR_ERR(clk);
121 /* clock is optional */
122 if (ret != -ENOENT)
123 goto err_clk;
124 } else {
125 ret = regmap_mmio_attach_clk(regmap, clk);
126 if (ret)
127 goto err_attach;
128 }
129 }
130
131 syscon->regmap = regmap;
132 syscon->np = np;
133
134 spin_lock(&syscon_list_slock);
135 list_add_tail(&syscon->list, &syscon_list);
136 spin_unlock(&syscon_list_slock);
137
138 return syscon;
139
140 err_attach:
141 if (!IS_ERR(clk))
142 clk_put(clk);
143 err_clk:
144 regmap_exit(regmap);
145 err_regmap:
146 iounmap(base);
147 err_map:
148 kfree(syscon);
149 return ERR_PTR(ret);
150 }
151
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation
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