ACPI: replace snprintf() in "show" functions with sysfs_emit()

coccicheck complains about the use of snprintf() in sysfs "show"
functions:

Fix the coccicheck warning:
WARNING: use scnprintf or sprintf.

so use sysfs_emit() instead of it where applicable.

Signed-off-by: Qing Wang <wangqing@vivo.com>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: Qing Wang

drivers/acpi/acpi_lpss.c

@@ -750,7 +750,7 @@ static ssize_t lpss_ltr_show(struct device *dev, struct device_attribute *attr,
 	if (ret)
 		return ret;
 
-	return snprintf(buf, PAGE_SIZE, "%08x\n", ltr_value);
+	return sysfs_emit(buf, "%08x\n", ltr_value);
 }
 
 static ssize_t lpss_ltr_mode_show(struct device *dev,

drivers/acpi/dock.c

@@ -492,7 +492,7 @@ static ssize_t docked_show(struct device *dev,
 	struct acpi_device *adev = NULL;
 
 	acpi_bus_get_device(dock_station->handle, &adev);
-	return snprintf(buf, PAGE_SIZE, "%u\n", acpi_device_enumerated(adev));
+	return sysfs_emit(buf, "%u\n", acpi_device_enumerated(adev));
 }
 static DEVICE_ATTR_RO(docked);
 
@@ -504,7 +504,7 @@ static ssize_t flags_show(struct device *dev,
 {
 	struct dock_station *dock_station = dev->platform_data;
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", dock_station->flags);
+	return sysfs_emit(buf, "%d\n", dock_station->flags);
 
 }
 static DEVICE_ATTR_RO(flags);
@@ -543,7 +543,7 @@ static ssize_t uid_show(struct device *dev,
 	if (ACPI_FAILURE(status))
 		return 0;
 
-	return snprintf(buf, PAGE_SIZE, "%llx\n", lbuf);
+	return sysfs_emit(buf, "%llx\n", lbuf);
 }
 static DEVICE_ATTR_RO(uid);
 
@@ -562,7 +562,7 @@ static ssize_t type_show(struct device *dev,
 	else
 		type = "unknown";
 
-	return snprintf(buf, PAGE_SIZE, "%s\n", type);
+	return sysfs_emit(buf, "%s\n", type);
 }
 static DEVICE_ATTR_RO(type);