iio: adc: at91: unbreak channel adc channel 3

[firefly-linux-kernel-4.4.55.git] / drivers / iio / adc / at91_adc.c

diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
index 7b40925dd4ff297e56fa0a3541980e9964d14092..93986f0590efa64f7e3b58fc468e96de4ac48cdb 100644 (file)
--- a/drivers/iio/adc/at91_adc.c
+++ b/drivers/iio/adc/at91_adc.c
@@ -381,8 +381,8 @@ static irqreturn_t at91_adc_rl_interrupt(int irq, void *private)
                st->ts_bufferedmeasure = false;
                input_report_key(st->ts_input, BTN_TOUCH, 0);
                input_sync(st->ts_input);
-       } else if (status & AT91_ADC_EOC(3)) {
-               /* Conversion finished */
+       } else if (status & AT91_ADC_EOC(3) && st->ts_input) {
+               /* Conversion finished and we've a touchscreen */
                if (st->ts_bufferedmeasure) {
                        /*
                         * Last measurement is always discarded, since it can