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xen_console: correctly cleanup primary console on teardown.

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All of the work in con_disconnect applies to the primary console case
(when xendev->dev is NULL). Therefore remove the early check and bail
and allow it to fall through. All of the existing code is correctly
conditional already.

The ->dev and ->gnttabdev handles are either both set or neither. For
consistency with con_initialise() with to the former here too.

With this con_initialise and con_disconnect now mirror each other.

Fix up a hard tab in the function while editing.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This commit is contained in:
Ian Campbell 2016-01-15 13:23:37 +00:00 committed by Stefano Stabellini
parent 1535a6d699
commit 549e9bcabc
1 changed files with 2 additions and 5 deletions
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7
hw/char/xen_console.c
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@ -265,9 +265,6 @@ static void con_disconnect(struct XenDevice *xendev)
{
struct XenConsole *con = container_of(xendev, struct XenConsole, xendev);
if (!xendev->dev) {
return;
}
if (con->chr) {
qemu_chr_add_handlers(con->chr, NULL, NULL, NULL, NULL);
qemu_chr_fe_release(con->chr);
@ -275,12 +272,12 @@ static void con_disconnect(struct XenDevice *xendev)
xen_be_unbind_evtchn(&con->xendev);
if (con->sring) {
if (!xendev->gnttabdev) {
if (!xendev->dev) {
munmap(con->sring, XC_PAGE_SIZE);
} else {
xc_gnttab_munmap(xendev->gnttabdev, con->sring, 1);
}
con->sring = NULL;
con->sring = NULL;
}
}