qga: Fix suspend on Linux guests without systemd

Allow the Linux guest agent to attempt each of the suspend methods
(systemctl, pm-* and writing to /sys) in turn.

Prior to this guests without systemd failed to suspend due to
`guest_suspend` returning early regardless of the return value of
`systemd_supports_mode`.

Signed-off-by: Mark Somerville <mark@qpok.net>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
(cherry picked from commit 86dcb6ab9b603450eb6d896cdc95286de2c7d561)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Mark Somerville 2023-04-06 13:45:31 +01:00 committed by Michael Tokarev
parent 8e84a20705
commit 07e7102b8e

View File

@ -1925,10 +1925,10 @@ static void guest_suspend(SuspendMode mode, Error **errp)
if (systemd_supports_mode(mode, &local_err)) {
mode_supported = true;
systemd_suspend(mode, &local_err);
}
if (!local_err) {
return;
if (!local_err) {
return;
}
}
error_free(local_err);
@ -1937,10 +1937,10 @@ static void guest_suspend(SuspendMode mode, Error **errp)
if (pmutils_supports_mode(mode, &local_err)) {
mode_supported = true;
pmutils_suspend(mode, &local_err);
}
if (!local_err) {
return;
if (!local_err) {
return;
}
}
error_free(local_err);