diff --git a/arch/arm/mach-omap2/sec-common.c b/arch/arm/mach-omap2/sec-common.c
index 030b36f..2d54a31 100644
--- a/arch/arm/mach-omap2/sec-common.c
+++ b/arch/arm/mach-omap2/sec-common.c
@@ -112,8 +112,8 @@
 
 	/* Perform cache writeback on input buffer */
 	flush_dcache_range(
-		(u32)*image,
-		(u32)*image + roundup(*size, ARCH_DMA_MINALIGN));
+		rounddown((u32)*image, ARCH_DMA_MINALIGN),
+		roundup((u32)*image + *size, ARCH_DMA_MINALIGN));
 
 	cert_addr = (uint32_t)*image;
 	sig_addr = find_sig_start((char *)*image, *size);
@@ -151,8 +151,8 @@
 
 	/* Perform cache writeback on output buffer */
 	flush_dcache_range(
-		(u32)*image,
-		(u32)*image + roundup(*size, ARCH_DMA_MINALIGN));
+		rounddown((u32)*image, ARCH_DMA_MINALIGN),
+		roundup((u32)*image + *size, ARCH_DMA_MINALIGN));
 
 auth_exit:
 	if (result != 0) {