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ACPI: sysfs: Clean up create_pnp_modalias() and create_of_modalias()

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'modalias' is only written with snprintf() and it is already guaranteed
to be nul-terminated, so remove the unneeded (but harmless) writes of a
trailing '\0' to it.

Also snprintf() never returns negative values, so remove redundant (but
harmless) checks for it.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
[ rjw: Merge two patches into one, combine changelogs, add subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Christophe JAILLET 2023-10-23 21:33:17 +02:00 committed by Rafael J. Wysocki
parent 48cf49d319
commit bc8f7abe97
1 changed files with 2 additions and 6 deletions
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8
drivers/acpi/device_sysfs.c
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@ -168,8 +168,6 @@ static int create_pnp_modalias(const struct acpi_device *acpi_dev, char *modalia
continue;
count = snprintf(&modalias[len], size, "%s:", id->id);
if (count < 0)
return -EINVAL;
if (count >= size)
return -ENOMEM;
@ -177,7 +175,7 @@ static int create_pnp_modalias(const struct acpi_device *acpi_dev, char *modalia
len += count;
size -= count;
}
modalias[len] = '\0';
return len;
}
@ -228,8 +226,6 @@ static int create_of_modalias(const struct acpi_device *acpi_dev, char *modalias
for (i = 0; i < nval; i++, obj++) {
count = snprintf(&modalias[len], size, "C%s",
obj->string.pointer);
if (count < 0)
return -EINVAL;
if (count >= size)
return -ENOMEM;
@ -237,7 +233,7 @@ static int create_of_modalias(const struct acpi_device *acpi_dev, char *modalias
len += count;
size -= count;
}
modalias[len] = '\0';
return len;
}