Fix semaphore initialization

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4085 42af7a65-404d-4744-a932-0658087f49c3

arch/arm/src/sam3u/sam3u_dmac.c

@@ -1183,7 +1183,7 @@ void weak_function up_dmainitialize(void)
   /* Initialize semaphores */
 
   sem_init(&g_chsem, 0, 1);
-  sem_init(&g_chsem, 0, CONFIG_SAM3U_NDMACHAN);
+  sem_init(&g_dsem, 0, CONFIG_SAM3U_NDMACHAN);
 }
 
 /****************************************************************************
@@ -1537,4 +1537,4 @@ void sam3u_dmadump(DMA_HANDLE handle, const struct sam3u_dmaregs_s *regs,
   dmadbg("       CFG[%08x]: %08x\n", dmach->base + SAM3U_DMACHAN_CFG_OFFSET, regs->cfg);
 }
 #endif /* CONFIG_DEBUG_DMA */
-#endif /* CONFIG_SAM3U_DMA */
\ No newline at end of file
+#endif /* CONFIG_SAM3U_DMA */