From: Dan Carpenter <dan.carpenter@oracle.com>
To: eajames@linux.ibm.com
Cc: linux-hwmon@vger.kernel.org
Subject: [bug report] hwmon: (pmbus/ibm-cffps) Add new manufacturer debugfs entries
Date: Tue, 7 Jan 2020 16:32:35 +0300 [thread overview]
Message-ID: <20200107133235.ug54ssy5bqpg3qp3@kili.mountain> (raw)
Hello Eddie James,
The patch bb3c0a27ed1d: "hwmon: (pmbus/ibm-cffps) Add new
manufacturer debugfs entries" from Dec 19, 2019, leads to the
following static checker warning:
drivers/hwmon/pmbus/ibm-cffps.c:257 ibm_cffps_debugfs_write()
error: uninitialized symbol 'data'.
drivers/hwmon/pmbus/ibm-cffps.c
238 static ssize_t ibm_cffps_debugfs_write(struct file *file,
239 const char __user *buf, size_t count,
240 loff_t *ppos)
241 {
242 u8 data;
243 ssize_t rc;
244 int *idxp = file->private_data;
245 int idx = *idxp;
246 struct ibm_cffps *psu = to_psu(idxp, idx);
247
248 switch (idx) {
249 case CFFPS_DEBUGFS_ON_OFF_CONFIG:
250 pmbus_set_page(psu->client, 0);
251
252 rc = simple_write_to_buffer(&data, 1, ppos, buf, count);
^^^^^^^^^^^^^^
If "ppos >= 1" then "data" isn't initialized but "rc" is zero.
253 if (rc < 0)
254 return rc;
255
256 rc = i2c_smbus_write_byte_data(psu->client,
257 PMBUS_ON_OFF_CONFIG, data);
258 if (rc)
259 return rc;
260
261 rc = 1;
262 break;
263 default:
264 return -EINVAL;
265 }
266
267 return rc;
268 }
regards,
dan carpenter
next reply other threads:[~2020-01-07 13:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-07 13:32 Dan Carpenter [this message]
2020-01-07 13:53 ` [bug report] hwmon: (pmbus/ibm-cffps) Add new manufacturer debugfs entries Guenter Roeck
2020-01-07 15:08 ` Eddie James
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