diff --git a/arch/arm/mach-omap/am33xx_bbu_emmc.c b/arch/arm/mach-omap/am33xx_bbu_emmc.c
index 3220575..d3adb37 100644
--- a/arch/arm/mach-omap/am33xx_bbu_emmc.c
+++ b/arch/arm/mach-omap/am33xx_bbu_emmc.c
@@ -39,7 +39,7 @@
 	if (ret != 0)
 		return ret;
 
-	fd = open(handler->devicefile, O_WRONLY);
+	fd = open(handler->devicefile, O_RDWR);
 	if (fd < 0) {
 		pr_err("could not open %s: %s\n", handler->devicefile,
 			errno_str());