ACPI: scan: Use strscpy() instead of strcpy()

Replace strcpy() with strscpy() in the ACPI device enumeration code.

strcpy() has been deprecated because it is generally unsafe, so it
is better to eliminate it from the kernel source.

Link: KSPP#88
Signed-off-by: Muhammad Qasim Abdul Majeed <[email protected]>
Link: https://patch.msgid.link/[email protected]
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: qa-majeed

drivers/acpi/scan.c

@@ -1179,19 +1179,19 @@ static void acpi_device_get_busid(struct acpi_device *device)
 	 * TBD: Shouldn't this value be unique (within the ACPI namespace)?
 	 */
 	if (!acpi_dev_parent(device)) {
-		strcpy(device->pnp.bus_id, "ACPI");
+		strscpy(device->pnp.bus_id, "ACPI");
 		return;
 	}
 
 	switch (device->device_type) {
 	case ACPI_BUS_TYPE_POWER_BUTTON:
-		strcpy(device->pnp.bus_id, "PWRF");
+		strscpy(device->pnp.bus_id, "PWRF");
 		break;
 	case ACPI_BUS_TYPE_SLEEP_BUTTON:
-		strcpy(device->pnp.bus_id, "SLPF");
+		strscpy(device->pnp.bus_id, "SLPF");
 		break;
 	case ACPI_BUS_TYPE_ECDT_EC:
-		strcpy(device->pnp.bus_id, "ECDT");
+		strscpy(device->pnp.bus_id, "ECDT");
 		break;
 	default:
 		acpi_get_name(device->handle, ACPI_SINGLE_NAME, &buffer);
@@ -1202,7 +1202,7 @@ static void acpi_device_get_busid(struct acpi_device *device)
 			else
 				break;
 		}
-		strcpy(device->pnp.bus_id, bus_id);
+		strscpy(device->pnp.bus_id, bus_id);
 		break;
 	}
 }
@@ -1453,8 +1453,8 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
 			 acpi_object_is_system_bus(handle)) {
 			/* \_SB, \_TZ, LNXSYBUS */
 			acpi_add_id(pnp, ACPI_BUS_HID);
-			strcpy(pnp->device_name, ACPI_BUS_DEVICE_NAME);
-			strcpy(pnp->device_class, ACPI_BUS_CLASS);
+			strscpy(pnp->device_name, ACPI_BUS_DEVICE_NAME);
+			strscpy(pnp->device_class, ACPI_BUS_CLASS);
 		}
 
 		break;