From: Dan Carpenter <dan.carpenter@oracle.com>
To: kbuild@lists.01.org,
Alexandru Ardelean <alexandru.ardelean@analog.com>,
linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org
Cc: lkp@intel.com, kbuild-all@lists.01.org, lars@metafoo.de,
Michael.Hennerich@analog.com, jic23@kernel.org,
nuno.sa@analog.com, dragos.bogdan@analog.com, rafael@kernel.org,
gregkh@linuxfoundation.org,
Alexandru Ardelean <alexandru.ardelean@analog.com>
Subject: Re: [PATCH v3 06/11] iio: core: merge buffer/ & scan_elements/ attributes
Date: Tue, 2 Feb 2021 09:07:05 +0300 [thread overview]
Message-ID: <20210202060705.GN2696@kadam> (raw)
In-Reply-To: <20210201145105.20459-7-alexandru.ardelean@analog.com>
[-- Attachment #1: Type: text/plain, Size: 8887 bytes --]
Hi Alexandru,
url: https://github.com/0day-ci/linux/commits/Alexandru-Ardelean/iio-core-buffer-add-support-for-multiple-IIO-buffers-per-IIO-device/20210201-233550
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: arc-randconfig-m031-20210201 (attached as .config)
compiler: arc-elf-gcc (GCC) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
New smatch warnings:
drivers/iio/industrialio-buffer.c:1413 __iio_buffer_alloc_sysfs_and_mask() error: uninitialized symbol 'ret'.
vim +/ret +1413 drivers/iio/industrialio-buffer.c
e16e0a778fec8a Alexandru Ardelean 2020-09-17 1314 static int __iio_buffer_alloc_sysfs_and_mask(struct iio_buffer *buffer,
418ff389a5a48a Alexandru Ardelean 2021-02-01 1315 struct iio_dev *indio_dev,
418ff389a5a48a Alexandru Ardelean 2021-02-01 1316 int index)
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1317 {
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1318 struct iio_dev_attr *p;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1319 struct attribute **attr;
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1320 int ret, i, attrn, scan_el_attrcount, buffer_attrcount;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1321 const struct iio_chan_spec *channels;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1322
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1323 buffer_attrcount = 0;
08e7e0adaa1720 Lars-Peter Clausen 2014-11-26 1324 if (buffer->attrs) {
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1325 while (buffer->attrs[buffer_attrcount] != NULL)
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1326 buffer_attrcount++;
08e7e0adaa1720 Lars-Peter Clausen 2014-11-26 1327 }
08e7e0adaa1720 Lars-Peter Clausen 2014-11-26 1328
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1329 scan_el_attrcount = 0;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1330 INIT_LIST_HEAD(&buffer->scan_el_dev_attr_list);
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1331 channels = indio_dev->channels;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1332 if (channels) {
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1333 /* new magic */
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1334 for (i = 0; i < indio_dev->num_channels; i++) {
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1335 if (channels[i].scan_index < 0)
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1336 continue;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1337
ff3f7e049aef92 Alexandru Ardelean 2020-04-24 1338 ret = iio_buffer_add_channel_sysfs(indio_dev, buffer,
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1339 &channels[i]);
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1340 if (ret < 0)
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1341 goto error_cleanup_dynamic;
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1342 scan_el_attrcount += ret;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1343 if (channels[i].type == IIO_TIMESTAMP)
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1344 indio_dev->scan_index_timestamp =
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1345 channels[i].scan_index;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1346 }
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1347 if (indio_dev->masklength && buffer->scan_mask == NULL) {
3862828a903d3c Andy Shevchenko 2019-03-04 1348 buffer->scan_mask = bitmap_zalloc(indio_dev->masklength,
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1349 GFP_KERNEL);
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1350 if (buffer->scan_mask == NULL) {
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1351 ret = -ENOMEM;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1352 goto error_cleanup_dynamic;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1353 }
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1354 }
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1355 }
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1356
418ff389a5a48a Alexandru Ardelean 2021-02-01 1357 attrn = buffer_attrcount + scan_el_attrcount + ARRAY_SIZE(iio_buffer_attrs);
418ff389a5a48a Alexandru Ardelean 2021-02-01 1358 attr = kcalloc(attrn + 1, sizeof(struct attribute *), GFP_KERNEL);
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1359 if (!attr) {
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1360 ret = -ENOMEM;
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1361 goto error_free_scan_mask;
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1362 }
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1363
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1364 memcpy(attr, iio_buffer_attrs, sizeof(iio_buffer_attrs));
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1365 if (!buffer->access->set_length)
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1366 attr[0] = &dev_attr_length_ro.attr;
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1367
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1368 if (buffer->access->flags & INDIO_BUFFER_FLAG_FIXED_WATERMARK)
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1369 attr[2] = &dev_attr_watermark_ro.attr;
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1370
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1371 if (buffer->attrs)
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1372 memcpy(&attr[ARRAY_SIZE(iio_buffer_attrs)], buffer->attrs,
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1373 sizeof(struct attribute *) * buffer_attrcount);
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1374
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1375 buffer_attrcount += ARRAY_SIZE(iio_buffer_attrs);
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1376
418ff389a5a48a Alexandru Ardelean 2021-02-01 1377 attrn = buffer_attrcount;
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1378
418ff389a5a48a Alexandru Ardelean 2021-02-01 1379 list_for_each_entry(p, &buffer->scan_el_dev_attr_list, l)
418ff389a5a48a Alexandru Ardelean 2021-02-01 1380 attr[attrn++] = &p->dev_attr.attr;
418ff389a5a48a Alexandru Ardelean 2021-02-01 1381
418ff389a5a48a Alexandru Ardelean 2021-02-01 1382 buffer->buffer_group.name = kasprintf(GFP_KERNEL, "buffer%d", index);
418ff389a5a48a Alexandru Ardelean 2021-02-01 1383 if (!buffer->buffer_group.name)
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1384 goto error_free_buffer_attrs;
This needs to be "ret = -ENOMEM;"
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1385
418ff389a5a48a Alexandru Ardelean 2021-02-01 1386 buffer->buffer_group.attrs = attr;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1387
418ff389a5a48a Alexandru Ardelean 2021-02-01 1388 ret = iio_device_register_sysfs_group(indio_dev, &buffer->buffer_group);
418ff389a5a48a Alexandru Ardelean 2021-02-01 1389 if (ret)
418ff389a5a48a Alexandru Ardelean 2021-02-01 1390 goto error_free_buffer_attr_group_name;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1391
418ff389a5a48a Alexandru Ardelean 2021-02-01 1392 /* we only need to link the legacy buffer groups for the first buffer */
418ff389a5a48a Alexandru Ardelean 2021-02-01 1393 if (index > 0)
418ff389a5a48a Alexandru Ardelean 2021-02-01 1394 return 0;
2dca9525701e36 Alexandru Ardelean 2021-02-01 1395
418ff389a5a48a Alexandru Ardelean 2021-02-01 1396 ret = iio_buffer_register_legacy_sysfs_groups(indio_dev, attr,
418ff389a5a48a Alexandru Ardelean 2021-02-01 1397 buffer_attrcount,
418ff389a5a48a Alexandru Ardelean 2021-02-01 1398 scan_el_attrcount);
2dca9525701e36 Alexandru Ardelean 2021-02-01 1399 if (ret)
418ff389a5a48a Alexandru Ardelean 2021-02-01 1400 goto error_free_buffer_attr_group_name;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1401
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1402 return 0;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1403
418ff389a5a48a Alexandru Ardelean 2021-02-01 1404 error_free_buffer_attr_group_name:
418ff389a5a48a Alexandru Ardelean 2021-02-01 1405 kfree(buffer->buffer_group.name);
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1406 error_free_buffer_attrs:
e5d01923ab9239 Alexandru Ardelean 2021-02-01 1407 kfree(buffer->buffer_group.attrs);
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1408 error_free_scan_mask:
3862828a903d3c Andy Shevchenko 2019-03-04 1409 bitmap_free(buffer->scan_mask);
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1410 error_cleanup_dynamic:
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1411 iio_free_chan_devattr_list(&buffer->scan_el_dev_attr_list);
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1412
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 @1413 return ret;
d967cb6bd4e79c Lars-Peter Clausen 2014-11-26 1414 }
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 25323 bytes --]
next prev parent reply other threads:[~2021-02-02 6:10 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-01 14:50 [PATCH v3 00/11] iio: core,buffer: add support for multiple IIO buffers per IIO device Alexandru Ardelean
2021-02-01 14:50 ` [PATCH v3 01/11] docs: ioctl-number.rst: reserve IIO subsystem ioctl() space Alexandru Ardelean
2021-02-04 17:06 ` Jonathan Cameron
2021-02-05 7:08 ` Alexandru Ardelean
2021-02-01 14:50 ` [PATCH v3 02/11] iio: core: register chardev only if needed Alexandru Ardelean
2021-02-04 17:17 ` Jonathan Cameron
2021-02-01 14:50 ` [PATCH v3 03/11] iio: core-trigger: make iio_device_register_trigger_consumer() an int return Alexandru Ardelean
2021-02-01 14:50 ` [PATCH v3 04/11] iio: core: rework iio device group creation Alexandru Ardelean
2021-02-04 17:32 ` Jonathan Cameron
2021-02-05 7:32 ` Alexandru Ardelean
2021-02-01 14:50 ` [PATCH v3 05/11] iio: buffer: group attr count and attr alloc Alexandru Ardelean
2021-02-04 17:49 ` Jonathan Cameron
2021-02-05 8:12 ` Alexandru Ardelean
2021-02-05 12:33 ` Jonathan Cameron
2021-02-01 14:51 ` [PATCH v3 06/11] iio: core: merge buffer/ & scan_elements/ attributes Alexandru Ardelean
2021-02-01 20:02 ` kernel test robot
2021-02-02 6:07 ` Dan Carpenter [this message]
2021-02-03 10:02 ` Andy Shevchenko
2021-02-04 13:41 ` Alexandru Ardelean
2021-02-05 11:07 ` Andy Shevchenko
2021-02-01 14:51 ` [PATCH v3 07/11] iio: add reference to iio buffer on iio_dev_attr Alexandru Ardelean
2021-02-04 18:09 ` Jonathan Cameron
2021-02-05 8:26 ` Alexandru Ardelean
2021-02-01 14:51 ` [PATCH v3 08/11] iio: buffer: wrap all buffer attributes into iio_dev_attr Alexandru Ardelean
2021-02-04 18:23 ` Jonathan Cameron
2021-02-05 9:17 ` Alexandru Ardelean
2021-02-05 12:39 ` Jonathan Cameron
2021-02-05 12:57 ` Alexandru Ardelean
2021-02-06 14:46 ` Jonathan Cameron
2021-02-01 14:51 ` [PATCH v3 09/11] iio: core: wrap iio device & buffer into struct for character devices Alexandru Ardelean
2021-02-01 14:51 ` [PATCH v3 10/11] iio: buffer: introduce support for attaching more IIO buffers Alexandru Ardelean
2021-02-04 18:34 ` Jonathan Cameron
2021-02-05 9:32 ` Alexandru Ardelean
2021-02-01 14:51 ` [PATCH v3 11/11] iio: buffer: add ioctl() to support opening extra buffers for IIO device Alexandru Ardelean
2021-02-04 19:00 ` Jonathan Cameron
2021-02-05 9:51 ` Alexandru Ardelean
2021-02-05 12:44 ` Jonathan Cameron
2021-02-05 12:48 ` Alexandru Ardelean
2021-02-06 14:48 ` Jonathan Cameron
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210202060705.GN2696@kadam \
--to=dan.carpenter@oracle.com \
--cc=Michael.Hennerich@analog.com \
--cc=alexandru.ardelean@analog.com \
--cc=dragos.bogdan@analog.com \
--cc=gregkh@linuxfoundation.org \
--cc=jic23@kernel.org \
--cc=kbuild-all@lists.01.org \
--cc=kbuild@lists.01.org \
--cc=lars@metafoo.de \
--cc=linux-iio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=lkp@intel.com \
--cc=nuno.sa@analog.com \
--cc=rafael@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).