diff --git a/drivers/staging/greybus/sdio.c b/drivers/staging/greybus/sdio.c
index 66b37ea29ef0..101ca5097fc9 100644
--- a/drivers/staging/greybus/sdio.c
+++ b/drivers/staging/greybus/sdio.c
@@ -52,7 +52,7 @@ struct gb_sdio_host {
 
 static inline bool single_op(struct mmc_command *cmd)
 {
-	uint32_t opcode = cmd->opcode;
+	u32 opcode = cmd->opcode;
 
 	return opcode == MMC_WRITE_BLOCK ||
 	       opcode == MMC_READ_SINGLE_BLOCK;