Correct conditional expression

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1201 42af7a65-404d-4744-a932-0658087f49c3

arch/sh/src/sh1/sh1_lowputc.c

@@ -176,7 +176,9 @@
 #ifdef HAVE_CONSOLE
 static inline int up_txready(void)
 {
-  return (getreg8(SH1_SCI_BASE + SH1_SCI_SSR_OFFSET) & SH1_SCISSR_TDRE != 0);
+  /* Check the TDRE bit in the SSR.  1=TDR is empty */
+
+  return ((getreg8(SH1_SCI_BASE + SH1_SCI_SSR_OFFSET) & SH1_SCISSR_TDRE) != 0);
 }
 #endif