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TTY: skip /dev/log checks if console is serial

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It is unclear why /dev/log has its own open/close rules, but those
rules conflict with serial console redirection.  This does not solve
the root of the problem, but it puts back in place more or less the
same workaround that was already in place before the TTY overhaul.

Change-Id: Ib53abbc28a76c1f2b0befc8448aeed0173bc96a5
This commit is contained in:
David van Moolenbroek 2013-10-01 23:25:01 +02:00 committed by Lionel Sambuc
parent 3d697930dd
commit 5e48dc3f40
1 changed files with 2 additions and 2 deletions
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4
drivers/tty/tty.c
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@ -780,7 +780,7 @@ static int do_open(devminor_t minor, int access, endpoint_t user_endpt)
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
if (minor == LOG_MINOR) {
if (minor == LOG_MINOR && isconsole(tp)) {
/* The log device is a write-only diagnostics device. */
if (access & R_BIT) return EACCES;
} else {
@ -809,7 +809,7 @@ static int do_close(devminor_t minor)
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
if (minor != LOG_MINOR && --tp->tty_openct == 0) {
if ((minor != LOG_MINOR || !isconsole(tp)) && --tp->tty_openct == 0) {
tp->tty_pgrp = 0;
tty_icancel(tp);
(*tp->tty_ocancel)(tp, 0);