Index: sys/arm/broadcom/bcm2835/bcm2835_sdhci.c
===================================================================
--- sys/arm/broadcom/bcm2835/bcm2835_sdhci.c
+++ sys/arm/broadcom/bcm2835/bcm2835_sdhci.c
@@ -305,7 +305,8 @@
 		err = bus_dma_tag_create(bus_get_dma_tag(dev),
 		    1, 0, BUS_SPACE_MAXADDR_32BIT,
 		    BUS_SPACE_MAXADDR, NULL, NULL,
-		    BCM_SDHCI_BUFFER_SIZE, NUM_DMA_SEGS, BCM_SDHCI_BUFFER_SIZE,
+		    BCM_SDHCI_BUFFER_SIZE * NUM_DMA_SEGS, NUM_DMA_SEGS,
+		    BCM_SDHCI_BUFFER_SIZE,
 		    BUS_DMA_ALLOCNOW, NULL, NULL,
 		    &sc->sc_dma_tag);