Huawei EM770W responses empty "+CPUC: \r\n". So return empty currency and zero ppuval. --- drivers/atmodem/call-meter.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/atmodem/call-meter.c b/drivers/atmodem/call-meter.c index 0553d78..74528ee 100644 --- a/drivers/atmodem/call-meter.c +++ b/drivers/atmodem/call-meter.c @@ -253,11 +253,19 @@ static void cpuc_query_cb(gboolean ok, } g_at_result_iter_next_string(&iter, &currency); + + if (currency == NULL) { + memset(currency_buf, 0, sizeof(currency_buf)); + ppuval = 0; + goto done; + } + strncpy(currency_buf, currency, sizeof(currency_buf)); g_at_result_iter_next_string(&iter, &ppu); ppuval = strtod(ppu, NULL); +done: cb(&error, currency_buf, ppuval, cbd->data); } -- 1.6.3.3