Fix wrong and missleading information in cy(4).

 - Correct error messages
 - RxFifoThreshold is named RX_FIFO_THRESHOLD with value of 6
 - LogOverruns does not exist, error logging is always on

ok bluhm@

1 files changed, 7 insertions, 11 deletions

diff --git a/share/man/man4/cy.4 b/share/man/man4/cy.4
index 145cdf740bc..d2c001a2b2c 100644
--- a/share/man/man4/cy.4
+++ b/share/man/man4/cy.4
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: cy.4,v 1.16 2013/07/16 16:05:48 schwarze Exp $
+.\"	$OpenBSD: cy.4,v 1.17 2020/07/23 22:33:29 jan Exp $
 .\"
 .\" Copyright (c) 1993 Andrew Herbert.
 .\" All rights reserved.
@@ -25,7 +25,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: July 16 2013 $
+.Dd $Mdocdate: July 23 2020 $
 .Dt CY 4
 .Os
 .Sh NAME
@@ -54,19 +54,15 @@ The device minor numbers for this driver are encoded as follows:
 .Ed
 .Sh DIAGNOSTICS
 .Bl -diag
-.It "cy0: tty input queue overflow"
+.It "cy0: port 0 ibuf overrun"
 Incoming characters have been discarded due to a buffer overflow.
-This is caused by the process in control of the device not
-.Xr read 2 Ns 'ing
-characters fast enough.
-.It "cy0: receive fifo overrun"
+.It "cy0: port 0 fifo overrun"
 Incoming characters have been discarded due to a CD1400 channel overrun.
 This is caused by interrupts not being serviced sufficiently quickly to prevent
 the 12 byte receive FIFO on a serial channel from overflowing.
-Reducing the value of the \fIRxFifoThreshold\fR #define from 8 to something
-smaller may help slow machines avoid this problem.
-The driver must have been compiled with the \fILogOverruns\fR option
-defined (the default) in order for this condition to be logged.
+Reducing the value of the
+.Dv RX_FIFO_THRESHOLD
+#define from 6 to something smaller may help slow machines avoid this problem.
 .El
 .Sh SEE ALSO
 .Xr com 4 ,