diff --git a/drivers/mmc/host/sdhci-pci-o2micro.c b/drivers/mmc/host/sdhci-pci-o2micro.c
index b29bf4e7dcb4..dd21315922c8 100644
--- a/drivers/mmc/host/sdhci-pci-o2micro.c
+++ b/drivers/mmc/host/sdhci-pci-o2micro.c
@@ -115,6 +115,7 @@ static int sdhci_o2_execute_tuning(struct mmc_host *mmc, u32 opcode)
 	 */
 	if (mmc->ios.bus_width == MMC_BUS_WIDTH_8) {
 		current_bus_width = mmc->ios.bus_width;
+		mmc->ios.bus_width = MMC_BUS_WIDTH_4;
 		sdhci_set_bus_width(host, MMC_BUS_WIDTH_4);
 	}
 
@@ -126,8 +127,10 @@ static int sdhci_o2_execute_tuning(struct mmc_host *mmc, u32 opcode)
 
 	sdhci_end_tuning(host);
 
-	if (current_bus_width == MMC_BUS_WIDTH_8)
+	if (current_bus_width == MMC_BUS_WIDTH_8) {
+		mmc->ios.bus_width = MMC_BUS_WIDTH_8;
 		sdhci_set_bus_width(host, current_bus_width);
+	}
 
 	host->flags &= ~SDHCI_HS400_TUNING;
 	return 0;