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Don't set the string "unknown" as a device's location_str

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Return an empty string when the location is unknown instead of the
string "unknown". This ensures that all location entries are of
the form key=val.

Suggested by:	imp
Approved by:	jhb (mentor)
MFC after:	1 week
Sponsored by:	Intel Corporation
Differential Revision:	https://reviews.freebsd.org/D21326
This commit is contained in:
D Scott Phillips 2019-08-19 17:51:06 +00:00
parent 93a0379392
commit 1974d7a40e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=351225
2 changed files with 2 additions and 2 deletions
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2
sys/dev/acpica/acpi.c
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@ -866,7 +866,7 @@ acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
strlcat(buf, buf2, buflen);
}
} else {
snprintf(buf, buflen, "unknown");
snprintf(buf, buflen, "");
}
return (0);
}

2
sys/dev/nvdimm/nvdimm.c
View File

@ -571,7 +571,7 @@ nvdimm_root_child_location_str(device_t dev, device_t child, char *buf,
if (handle != NULL)
res = snprintf(buf, buflen, "handle=%s", acpi_name(handle));
else
res = snprintf(buf, buflen, "unknown");
res = snprintf(buf, buflen, "");
if (res >= buflen)
return (EOVERFLOW);