dz: handle special conditions on reception correctly
Handle the read and ignore status masks correctly. Handle the BREAK condition
as expected: a framing error with a null character is a BREAK, any other
framing error is a framing error indeed.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/serial/dz.h b/drivers/serial/dz.h
index 6b34d50..1e836c3 100644
--- a/drivers/serial/dz.h
+++ b/drivers/serial/dz.h
@@ -33,6 +33,8 @@
#define DZ_FERR 0x2000 /* Frame error indicator */
#define DZ_PERR 0x1000 /* Parity error indicator */
+#define DZ_BREAK 0x0800 /* BREAK event software flag */
+
#define LINE(x) ((x & DZ_LINE_MASK) >> 8) /* Get the line number
from the input buffer */
#define UCHAR(x) ((unsigned char)(x & DZ_RBUF_MASK))