Index: firmware/target/arm/ata-pp5020.c
===================================================================
--- firmware/target/arm/ata-pp5020.c	(revision 29302)
+++ firmware/target/arm/ata-pp5020.c	(working copy)
@@ -159,7 +159,7 @@
  */
 bool ata_dma_setup(void *addr, unsigned long bytes, bool write) {
     /* Require cacheline alignment for reads to prevent interference. */
-    if (!write && ((unsigned long)addr & 15))
+    if (!write && ((unsigned long)addr & ~15))
         return false;
 
     /* Writes only need to be word-aligned, but by default DMA