Module Name:	src
Committed By:	manu
Date:		Sun Sep 21 18:48:00 UTC 2003

Modified Files:
	src/sys/dev/wscons: wsdisplay.c

Log Message:
Do much more sanity checks when handling entries in the sc_scr array
of struct wsdisplay_softc. Unused entries are NULL, and there were
a lot of places where we did not checked that the caller did not
requested an operation on a NULL entry.

While we are there, one bit of KNFification, and make return code more
consistent by always returning the same code (EINVAL) when a screen
number higer than the maximum is requested.


To generate a diff of this commit:
cvs rdiff -r1.75 -r1.76 src/sys/dev/wscons/wsdisplay.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.