Minor fix for gsc18ai32 ADC module:

- Change ADC timeout in iop_adc_functions
- Remove Demand DMA mode set to BCR: Not correct for this ADC model

src/include/drv/gsc18ai32.c

@@ -189,9 +189,6 @@ gsc18ai32Enable( CDS_HARDWARE* pHardware )
         if ( pHardware->adcType[ ii ] == GSC_18AI32SSC1M )
         {
             adc18Ptr = (volatile GSA_ADC_18BIT_REG*)adcPtr[ ii ];
-            /// Enable demand DMA mode ie auto DMA data to computer memory when
-            ///< GSAI_THRESHOLD data points in ADC FIFO.
-            adc18Ptr->BCR &= ~( GSAF_DMA_DEMAND_MODE );
             /// Set DMA mode and direction in PLX controller chip on module.
             adcDma[ ii ]->DMA0_MODE = GSAF_DMA_MODE_NO_INTR | 0x1000;
             /// Enable DMA

src/include/drv/iop_adc_functions.c

@@ -377,6 +377,7 @@ iop_adc_read( adcInfo_t* adcinfo, int cpuClk[] )
             pLocalEpics->epicsInput.bumpAdcRd = 0;
         }
 #endif
+        adc_wait_limit = MAX_ADC_WAIT_CARD_0;
     }
     return 0;
 }