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uml: fix infinite mconsole loop 

This patch takes care of a problem with the stopping code.

The function inside the while condition returns 0 to signify a problem.  A
problem could be for example a bad command or a bad version of the mconsole
client.  A bad command would terminate the stopping loop and resume the
kernel.  This is a problem.

A better solution is to make the loop infinite and don't leave it until we are
explicitly told to.

Signed-off-by: Karol Swietlicki <magotari@gmail.com>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Karol Swietlicki 2008-02-04 22:31:25 -08:00 committed by Linus Torvalds
parent ab26a5276c
commit cc0be0fb3f
1 changed files with 3 additions and 1 deletions
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4
arch/um/drivers/mconsole_kern.c
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@ -305,7 +305,9 @@ void mconsole_stop(struct mc_request *req)
deactivate_fd(req->originating_fd, MCONSOLE_IRQ);
os_set_fd_block(req->originating_fd, 1);
mconsole_reply(req, "stopped", 0, 0);
while (mconsole_get_request(req->originating_fd, req)) {
for (;;) {
if (!mconsole_get_request(req->originating_fd, req))
continue;
if (req->cmd->handler == mconsole_go)
break;
if (req->cmd->handler == mconsole_stop) {