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Date: Mon, 14 Oct 2019 14:18:33 +0800
From: kbuild test robot <lkp@...el.com>
To: Dan Murphy <dmurphy@...com>
Cc: kbuild-all@...ts.01.org, jacek.anaszewski@...il.com, pavel@....cz,
linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org,
Dan Murphy <dmurphy@...com>
Subject: Re: [PATCH v12 04/16] leds: multicolor: Introduce a multicolor class
definition
Hi Dan,
I love your patch! Yet something to improve:
[auto build test ERROR on j.anaszewski-leds/for-next]
[cannot apply to v5.4-rc3 next-20191011]
[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/Dan-Murphy/Multicolor-Framework-v12/20191014-103058
base: https://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds.git for-next
config: sparc64-allmodconfig (attached as .config)
compiler: sparc64-linux-gcc (GCC) 7.4.0
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=7.4.0 make.cross ARCH=sparc64
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
>> drivers//leds/led-class-multicolor.c:17:5: error: redefinition of 'led_mc_calc_color_components'
int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers//leds/led-class-multicolor.c:7:0:
include/linux/led-class-multicolor.h:119:19: note: previous definition of 'led_mc_calc_color_components' was here
static inline int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers//leds/led-class-multicolor.c:182:5: error: redefinition of 'led_classdev_multicolor_register_ext'
int led_classdev_multicolor_register_ext(struct device *parent,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers//leds/led-class-multicolor.c:7:0:
include/linux/led-class-multicolor.h:104:19: note: previous definition of 'led_classdev_multicolor_register_ext' was here
static inline int led_classdev_multicolor_register_ext(struct device *parent,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers//leds/led-class-multicolor.c:204:6: error: redefinition of 'led_classdev_multicolor_unregister'
void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers//leds/led-class-multicolor.c:7:0:
include/linux/led-class-multicolor.h:117:20: note: previous definition of 'led_classdev_multicolor_unregister' was here
static inline void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev) {}
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers//leds/led-class-multicolor.c:224:5: error: redefinition of 'devm_led_classdev_multicolor_register_ext'
int devm_led_classdev_multicolor_register_ext(struct device *parent,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers//leds/led-class-multicolor.c:7:0:
include/linux/led-class-multicolor.h:126:19: note: previous definition of 'devm_led_classdev_multicolor_register_ext' was here
static inline int devm_led_classdev_multicolor_register_ext(struct device *parent,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers//leds/led-class-multicolor.c:260:6: error: redefinition of 'devm_led_classdev_multicolor_unregister'
void devm_led_classdev_multicolor_unregister(struct device *dev,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers//leds/led-class-multicolor.c:7:0:
include/linux/led-class-multicolor.h:139:20: note: previous definition of 'devm_led_classdev_multicolor_unregister' was here
static inline void devm_led_classdev_multicolor_unregister(struct device *parent,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/led_mc_calc_color_components +17 drivers//leds/led-class-multicolor.c
16
> 17 int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev,
18 enum led_brightness brightness,
19 struct led_mc_color_conversion color_component[])
20 {
21 struct led_mc_color_entry *priv;
22 int i = 0;
23
24 list_for_each_entry(priv, &mcled_cdev->color_list, list) {
25 color_component[i].color_id = priv->led_color_id;
26 color_component[i].brightness = brightness *
27 priv->intensity / priv->max_intensity;
28 i++;
29 }
30
31 return 0;
32 }
33 EXPORT_SYMBOL_GPL(led_mc_calc_color_components);
34
35 static ssize_t intensity_store(struct device *dev,
36 struct device_attribute *intensity_attr,
37 const char *buf, size_t size)
38 {
39 struct led_mc_color_entry *priv = container_of(intensity_attr,
40 struct led_mc_color_entry,
41 intensity_attr);
42 struct led_classdev *led_cdev = priv->mcled_cdev->led_cdev;
43 unsigned long value;
44 ssize_t ret;
45
46 mutex_lock(&led_cdev->led_access);
47
48 ret = kstrtoul(buf, 10, &value);
49 if (ret)
50 goto unlock;
51
52 if (value > priv->max_intensity) {
53 ret = -EINVAL;
54 goto unlock;
55 }
56
57 priv->intensity = value;
58 ret = size;
59
60 unlock:
61 mutex_unlock(&led_cdev->led_access);
62 return ret;
63 }
64
65 static ssize_t intensity_show(struct device *dev,
66 struct device_attribute *intensity_attr,
67 char *buf)
68 {
69 struct led_mc_color_entry *priv = container_of(intensity_attr,
70 struct led_mc_color_entry,
71 intensity_attr);
72
73 return sprintf(buf, "%d\n", priv->intensity);
74 }
75
76 static ssize_t max_intensity_show(struct device *dev,
77 struct device_attribute *max_intensity_attr,
78 char *buf)
79 {
80 struct led_mc_color_entry *priv = container_of(max_intensity_attr,
81 struct led_mc_color_entry,
82 max_intensity_attr);
83
84 return sprintf(buf, "%d\n", priv->max_intensity);
85 }
86
87 static struct attribute *led_color_attrs[] = {
88 NULL,
89 };
90
91 static struct attribute_group led_color_group = {
92 .name = "colors",
93 .attrs = led_color_attrs,
94 };
95
96 static int led_multicolor_init_color(struct led_classdev_mc *mcled_cdev,
97 int color_id)
98 {
99 struct led_classdev *led_cdev = mcled_cdev->led_cdev;
100 struct led_mc_color_entry *mc_priv;
101 char *intensity_file_name;
102 char *max_intensity_file_name;
103 size_t len;
104 int ret;
105
106 mc_priv = devm_kzalloc(led_cdev->dev, sizeof(*mc_priv), GFP_KERNEL);
107 if (!mc_priv)
108 return -ENOMEM;
109
110 mc_priv->led_color_id = color_id;
111 mc_priv->mcled_cdev = mcled_cdev;
112
113 sysfs_attr_init(&mc_priv->intensity_attr.attr);
114 len = strlen(led_colors[color_id]) + strlen(INTENSITY_NAME) + 1;
115 intensity_file_name = kzalloc(len, GFP_KERNEL);
116 if (!intensity_file_name)
117 return -ENOMEM;
118
119 snprintf(intensity_file_name, len, "%s%s",
120 led_colors[color_id], INTENSITY_NAME);
121 mc_priv->intensity_attr.attr.name = intensity_file_name;
122 mc_priv->intensity_attr.attr.mode = 0644;
123 mc_priv->intensity_attr.store = intensity_store;
124 mc_priv->intensity_attr.show = intensity_show;
125 ret = sysfs_add_file_to_group(&led_cdev->dev->kobj,
126 &mc_priv->intensity_attr.attr,
127 led_color_group.name);
128 if (ret)
129 goto intensity_err_out;
130
131 sysfs_attr_init(&mc_priv->max_intensity_attr.attr);
132 len = strlen(led_colors[color_id]) + strlen(MAX_INTENSITY_NAME) + 1;
133 max_intensity_file_name = kzalloc(len, GFP_KERNEL);
134 if (!max_intensity_file_name) {
135 ret = -ENOMEM;
136 goto intensity_err_out;
137 }
138
139 snprintf(max_intensity_file_name, len, "%s%s",
140 led_colors[color_id], MAX_INTENSITY_NAME);
141 mc_priv->max_intensity_attr.attr.name = max_intensity_file_name;
142 mc_priv->max_intensity_attr.attr.mode = 0444;
143 mc_priv->max_intensity_attr.show = max_intensity_show;
144 ret = sysfs_add_file_to_group(&led_cdev->dev->kobj,
145 &mc_priv->max_intensity_attr.attr,
146 led_color_group.name);
147 if (ret)
148 goto max_intensity_err_out;
149
150 mc_priv->max_intensity = LED_FULL;
151 list_add_tail(&mc_priv->list, &mcled_cdev->color_list);
152
153 max_intensity_err_out:
154 kfree(max_intensity_file_name);
155 intensity_err_out:
156 kfree(intensity_file_name);
157 return ret;
158 }
159
160 static int led_multicolor_init_color_dir(struct led_classdev_mc *mcled_cdev)
161 {
162 struct led_classdev *led_cdev = mcled_cdev->led_cdev;
163 int ret;
164 int i;
165
166 ret = sysfs_create_group(&led_cdev->dev->kobj, &led_color_group);
167 if (ret)
168 return ret;
169
170 for (i = 0; i < LED_COLOR_ID_MAX; i++) {
171 if (test_bit(i, &mcled_cdev->available_colors)) {
172 ret = led_multicolor_init_color(mcled_cdev, i);
173 if (ret)
174 break;
175
176 }
177 }
178
179 return ret;
180 }
181
> 182 int led_classdev_multicolor_register_ext(struct device *parent,
183 struct led_classdev_mc *mcled_cdev,
184 struct led_init_data *init_data)
185 {
186 struct led_classdev *led_cdev;
187 int ret;
188
189 if (!mcled_cdev)
190 return -EINVAL;
191
192 led_cdev = mcled_cdev->led_cdev;
193 INIT_LIST_HEAD(&mcled_cdev->color_list);
194
195 /* Register led class device */
196 ret = led_classdev_register_ext(parent, led_cdev, init_data);
197 if (ret)
198 return ret;
199
200 return led_multicolor_init_color_dir(mcled_cdev);
201 }
202 EXPORT_SYMBOL_GPL(led_classdev_multicolor_register_ext);
203
> 204 void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev)
205 {
206 struct led_mc_color_entry *priv, *next;
207
208 if (!mcled_cdev)
209 return;
210
211 list_for_each_entry_safe(priv, next, &mcled_cdev->color_list, list)
212 list_del(&priv->list);
213
214 sysfs_remove_group(&mcled_cdev->led_cdev->dev->kobj, &led_color_group);
215 led_classdev_unregister(mcled_cdev->led_cdev);
216 }
217 EXPORT_SYMBOL_GPL(led_classdev_multicolor_unregister);
218
---
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