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IP22ZILOG: fix lockup and sysrq

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- fix lockup when switching from early console to real console
 - make sysrq reliable
 - fix panic, if sysrq is issued before console is opened

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Thomas Bogendoerfer
2007-11-28 16:21:44 -08:00
committed by Linus Torvalds
parent 6d4f5879b6
commit 68576cf122
4 changed files with 108 additions and 164 deletions
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2
include/linux/serial_core.h
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@@ -437,7 +437,7 @@ uart_handle_sysrq_char(struct uart_port *port, unsigned int ch)
#ifdef SUPPORT_SYSRQ
if (port->sysrq) {
if (ch && time_before(jiffies, port->sysrq)) {
handle_sysrq(ch, port->info->tty);
handle_sysrq(ch, port->info ? port->info->tty : NULL);
port->sysrq = 0;
return 1;
}