diff --git a/drivers/mmc/host/sdhci-xenon-phy.c b/drivers/mmc/host/sdhci-xenon-phy.c
index a35804b203a752e0acded7ca10e8144a2ebd68fd..c335052d0c026cee2e7f283d37d15a026387cc5a 100644
--- a/drivers/mmc/host/sdhci-xenon-phy.c
+++ b/drivers/mmc/host/sdhci-xenon-phy.c
@@ -526,6 +526,7 @@ static bool xenon_emmc_phy_slow_mode(struct sdhci_host *host,
 			ret = true;
 			break;
 		}
+		/* else: fall through */
 	default:
 		reg &= ~XENON_TIMING_ADJUST_SLOW_MODE;
 		ret = false;