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Message-ID: <0c098606-aba1-4cc0-9a33-6a68c67b1157@moroto.mountain>
Date: Tue, 11 Jun 2024 13:46:53 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: oe-kbuild@...ts.linux.dev, Dmitry Torokhov <dmitry.torokhov@...il.com>,
linux-input@...r.kernel.org
Cc: lkp@...el.com, oe-kbuild-all@...ts.linux.dev,
Artur Rojek <contact@...ur-rojek.eu>,
Chris Morgan <macromorgan@...mail.com>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Input: adc-joystick - move axes data into the main
structure
Hi Dmitry,
kernel test robot noticed the following build warnings:
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Dmitry-Torokhov/Input-adc-joystick-move-axes-data-into-the-main-structure/20240610-060124
base: https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next
patch link: https://lore.kernel.org/r/ZmYlfKDm5sgB44EU%40google.com
patch subject: [PATCH] Input: adc-joystick - move axes data into the main structure
config: x86_64-randconfig-161-20240611 (https://download.01.org/0day-ci/archive/20240611/202406111750.AXBfJUS3-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
| Closes: https://lore.kernel.org/r/202406111750.AXBfJUS3-lkp@intel.com/
smatch warnings:
drivers/input/joystick/adc-joystick.c:166 adc_joystick_set_axes() error: uninitialized symbol 'axes'.
drivers/input/joystick/adc-joystick.c:241 adc_joystick_probe() error: uninitialized symbol 'joy'.
drivers/input/joystick/adc-joystick.c:241 adc_joystick_probe() warn: passing zero to 'PTR_ERR'
vim +/axes +166 drivers/input/joystick/adc-joystick.c
2c2b364fddd551 Artur Rojek 2020-09-28 131
2c2b364fddd551 Artur Rojek 2020-09-28 132 static int adc_joystick_set_axes(struct device *dev, struct adc_joystick *joy)
2c2b364fddd551 Artur Rojek 2020-09-28 133 {
2c2b364fddd551 Artur Rojek 2020-09-28 134 struct adc_joystick_axis *axes;
2c2b364fddd551 Artur Rojek 2020-09-28 135 struct fwnode_handle *child;
815b74328f141f Dmitry Torokhov 2024-06-09 136 s32 range[2], fuzz, flat;
815b74328f141f Dmitry Torokhov 2024-06-09 137 unsigned int num_axes;
815b74328f141f Dmitry Torokhov 2024-06-09 138 int error, i;
2c2b364fddd551 Artur Rojek 2020-09-28 139
2c2b364fddd551 Artur Rojek 2020-09-28 140 num_axes = device_get_child_node_count(dev);
2c2b364fddd551 Artur Rojek 2020-09-28 141 if (!num_axes) {
2c2b364fddd551 Artur Rojek 2020-09-28 142 dev_err(dev, "Unable to find child nodes\n");
2c2b364fddd551 Artur Rojek 2020-09-28 143 return -EINVAL;
2c2b364fddd551 Artur Rojek 2020-09-28 144 }
2c2b364fddd551 Artur Rojek 2020-09-28 145
2c2b364fddd551 Artur Rojek 2020-09-28 146 if (num_axes != joy->num_chans) {
2c2b364fddd551 Artur Rojek 2020-09-28 147 dev_err(dev, "Got %d child nodes for %d channels\n",
2c2b364fddd551 Artur Rojek 2020-09-28 148 num_axes, joy->num_chans);
2c2b364fddd551 Artur Rojek 2020-09-28 149 return -EINVAL;
2c2b364fddd551 Artur Rojek 2020-09-28 150 }
2c2b364fddd551 Artur Rojek 2020-09-28 151
2c2b364fddd551 Artur Rojek 2020-09-28 152 device_for_each_child_node(dev, child) {
2c2b364fddd551 Artur Rojek 2020-09-28 153 error = fwnode_property_read_u32(child, "reg", &i);
2c2b364fddd551 Artur Rojek 2020-09-28 154 if (error) {
2c2b364fddd551 Artur Rojek 2020-09-28 155 dev_err(dev, "reg invalid or missing\n");
2c2b364fddd551 Artur Rojek 2020-09-28 156 goto err_fwnode_put;
2c2b364fddd551 Artur Rojek 2020-09-28 157 }
2c2b364fddd551 Artur Rojek 2020-09-28 158
2c2b364fddd551 Artur Rojek 2020-09-28 159 if (i >= num_axes) {
2c2b364fddd551 Artur Rojek 2020-09-28 160 error = -EINVAL;
2c2b364fddd551 Artur Rojek 2020-09-28 161 dev_err(dev, "No matching axis for reg %d\n", i);
2c2b364fddd551 Artur Rojek 2020-09-28 162 goto err_fwnode_put;
2c2b364fddd551 Artur Rojek 2020-09-28 163 }
2c2b364fddd551 Artur Rojek 2020-09-28 164
2c2b364fddd551 Artur Rojek 2020-09-28 165 error = fwnode_property_read_u32(child, "linux,code",
2c2b364fddd551 Artur Rojek 2020-09-28 @166 &axes[i].code);
axes is unitialized.
2c2b364fddd551 Artur Rojek 2020-09-28 167 if (error) {
2c2b364fddd551 Artur Rojek 2020-09-28 168 dev_err(dev, "linux,code invalid or missing\n");
2c2b364fddd551 Artur Rojek 2020-09-28 169 goto err_fwnode_put;
2c2b364fddd551 Artur Rojek 2020-09-28 170 }
2c2b364fddd551 Artur Rojek 2020-09-28 171
2c2b364fddd551 Artur Rojek 2020-09-28 172 error = fwnode_property_read_u32_array(child, "abs-range",
815b74328f141f Dmitry Torokhov 2024-06-09 173 range, 2);
2c2b364fddd551 Artur Rojek 2020-09-28 174 if (error) {
2c2b364fddd551 Artur Rojek 2020-09-28 175 dev_err(dev, "abs-range invalid or missing\n");
2c2b364fddd551 Artur Rojek 2020-09-28 176 goto err_fwnode_put;
2c2b364fddd551 Artur Rojek 2020-09-28 177 }
2c2b364fddd551 Artur Rojek 2020-09-28 178
815b74328f141f Dmitry Torokhov 2024-06-09 179 if (range[0] > range[1]) {
6560cfcfb46511 Chris Morgan 2024-01-19 180 dev_dbg(dev, "abs-axis %d inverted\n", i);
6560cfcfb46511 Chris Morgan 2024-01-19 181 axes[i].inverted = true;
815b74328f141f Dmitry Torokhov 2024-06-09 182 swap(range[0], range[1]);
6560cfcfb46511 Chris Morgan 2024-01-19 183 }
6560cfcfb46511 Chris Morgan 2024-01-19 184
815b74328f141f Dmitry Torokhov 2024-06-09 185 fwnode_property_read_u32(child, "abs-fuzz", &fuzz);
815b74328f141f Dmitry Torokhov 2024-06-09 186 fwnode_property_read_u32(child, "abs-flat", &flat);
2c2b364fddd551 Artur Rojek 2020-09-28 187
2c2b364fddd551 Artur Rojek 2020-09-28 188 input_set_abs_params(joy->input, axes[i].code,
815b74328f141f Dmitry Torokhov 2024-06-09 189 range[0], range[1], fuzz, flat);
2c2b364fddd551 Artur Rojek 2020-09-28 190 }
2c2b364fddd551 Artur Rojek 2020-09-28 191
2c2b364fddd551 Artur Rojek 2020-09-28 192 return 0;
2c2b364fddd551 Artur Rojek 2020-09-28 193
2c2b364fddd551 Artur Rojek 2020-09-28 194 err_fwnode_put:
2c2b364fddd551 Artur Rojek 2020-09-28 195 fwnode_handle_put(child);
2c2b364fddd551 Artur Rojek 2020-09-28 196 return error;
2c2b364fddd551 Artur Rojek 2020-09-28 197 }
2c2b364fddd551 Artur Rojek 2020-09-28 198
815b74328f141f Dmitry Torokhov 2024-06-09 199
815b74328f141f Dmitry Torokhov 2024-06-09 200 /*
815b74328f141f Dmitry Torokhov 2024-06-09 201 * Count how many channels we got. NULL terminated.
815b74328f141f Dmitry Torokhov 2024-06-09 202 * Do not check the storage size if using polling.
815b74328f141f Dmitry Torokhov 2024-06-09 203 */
815b74328f141f Dmitry Torokhov 2024-06-09 204 static int adc_joystick_count_channels(struct device *dev,
815b74328f141f Dmitry Torokhov 2024-06-09 205 const struct iio_channel *chans,
815b74328f141f Dmitry Torokhov 2024-06-09 206 bool polled,
815b74328f141f Dmitry Torokhov 2024-06-09 207 unsigned int *num_chans)
815b74328f141f Dmitry Torokhov 2024-06-09 208 {
815b74328f141f Dmitry Torokhov 2024-06-09 209 int bits;
815b74328f141f Dmitry Torokhov 2024-06-09 210 int i;
815b74328f141f Dmitry Torokhov 2024-06-09 211
815b74328f141f Dmitry Torokhov 2024-06-09 212 for (i = 0; chans[i].indio_dev; i++) {
815b74328f141f Dmitry Torokhov 2024-06-09 213 if (polled)
815b74328f141f Dmitry Torokhov 2024-06-09 214 continue;
815b74328f141f Dmitry Torokhov 2024-06-09 215 bits = chans[i].channel->scan_type.storagebits;
815b74328f141f Dmitry Torokhov 2024-06-09 216 if (!bits || bits > 16) {
815b74328f141f Dmitry Torokhov 2024-06-09 217 dev_err(dev, "Unsupported channel storage size\n");
815b74328f141f Dmitry Torokhov 2024-06-09 218 return -EINVAL;
815b74328f141f Dmitry Torokhov 2024-06-09 219 }
815b74328f141f Dmitry Torokhov 2024-06-09 220 if (bits != chans[0].channel->scan_type.storagebits) {
815b74328f141f Dmitry Torokhov 2024-06-09 221 dev_err(dev, "Channels must have equal storage size\n");
815b74328f141f Dmitry Torokhov 2024-06-09 222 return -EINVAL;
815b74328f141f Dmitry Torokhov 2024-06-09 223 }
815b74328f141f Dmitry Torokhov 2024-06-09 224 }
815b74328f141f Dmitry Torokhov 2024-06-09 225
815b74328f141f Dmitry Torokhov 2024-06-09 226 return i;
815b74328f141f Dmitry Torokhov 2024-06-09 227 }
815b74328f141f Dmitry Torokhov 2024-06-09 228
2c2b364fddd551 Artur Rojek 2020-09-28 229 static int adc_joystick_probe(struct platform_device *pdev)
2c2b364fddd551 Artur Rojek 2020-09-28 230 {
2c2b364fddd551 Artur Rojek 2020-09-28 231 struct device *dev = &pdev->dev;
815b74328f141f Dmitry Torokhov 2024-06-09 232 struct iio_channel *chans;
2c2b364fddd551 Artur Rojek 2020-09-28 233 struct adc_joystick *joy;
2c2b364fddd551 Artur Rojek 2020-09-28 234 struct input_dev *input;
815b74328f141f Dmitry Torokhov 2024-06-09 235 unsigned int poll_interval = 0;
815b74328f141f Dmitry Torokhov 2024-06-09 236 unsigned int num_chans;
2c2b364fddd551 Artur Rojek 2020-09-28 237 int error;
2c2b364fddd551 Artur Rojek 2020-09-28 238
815b74328f141f Dmitry Torokhov 2024-06-09 239 chans = devm_iio_channel_get_all(dev);
815b74328f141f Dmitry Torokhov 2024-06-09 240 if (IS_ERR(chans)) {
2c2b364fddd551 Artur Rojek 2020-09-28 @241 error = PTR_ERR(joy->chans);
s/joy->chans/chans/
2c2b364fddd551 Artur Rojek 2020-09-28 242 if (error != -EPROBE_DEFER)
2c2b364fddd551 Artur Rojek 2020-09-28 243 dev_err(dev, "Unable to get IIO channels");
2c2b364fddd551 Artur Rojek 2020-09-28 244 return error;
2c2b364fddd551 Artur Rojek 2020-09-28 245 }
2c2b364fddd551 Artur Rojek 2020-09-28 246
24c06e000e8fa2 Chris Morgan 2022-08-16 247 error = device_property_read_u32(dev, "poll-interval", &poll_interval);
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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