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-rw-r--r--sys/arch/sparc/dev/zsvar.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/arch/sparc/dev/zsvar.h b/sys/arch/sparc/dev/zsvar.h
index 2726db2abf8..b552227de0d 100644
--- a/sys/arch/sparc/dev/zsvar.h
+++ b/sys/arch/sparc/dev/zsvar.h
@@ -65,8 +65,8 @@
* When the value is a character + RR1 status, the character is in the
* upper 8 bits of the RR1 status.
*/
-#define ZLRB_RING_SIZE 256 /* ZS line ring buffer size */
-#define ZLRB_RING_MASK 255 /* mask for same */
+#define ZLRB_RING_SIZE 4096 /* ZS line ring buffer size */
+#define ZLRB_RING_MASK (ZLRB_RING_SIZE-1) /* mask for same */
/* 0 is reserved (means "no interrupt") */
#define ZRING_RINT 1 /* receive data interrupt */