param: simple locking for sysfs-writable charp parameters

[firefly-linux-kernel-4.4.55.git] / drivers / usb / atm / ueagle-atm.c

diff --git a/drivers/usb/atm/ueagle-atm.c b/drivers/usb/atm/ueagle-atm.c
index 5b3f555e01c9ace8474fda0f3a5137b99002b185..ea071a5b6eee6aa929827851966dec80dfe070a0 100644 (file)
--- a/drivers/usb/atm/ueagle-atm.c
+++ b/drivers/usb/atm/ueagle-atm.c
@@ -1577,6 +1577,7 @@ static void cmvs_file_name(struct uea_softc *sc, char *const cmv_name, int ver)
        char file_arr[] = "CMVxy.bin";
        char *file;
 
+       kparam_block_sysfs_write(cmv_file);
        /* set proper name corresponding modem version and line type */
        if (cmv_file[sc->modem_index] == NULL) {
                if (UEA_CHIP_VERSION(sc) == ADI930)
@@ -1595,6 +1596,7 @@ static void cmvs_file_name(struct uea_softc *sc, char *const cmv_name, int ver)
        strlcat(cmv_name, file, UEA_FW_NAME_MAX);
        if (ver == 2)
                strlcat(cmv_name, ".v2", UEA_FW_NAME_MAX);
+       kparam_unblock_sysfs_write(cmv_file);
 }
 
 static int request_cmvs_old(struct uea_softc *sc,