revert meson drv shutdown

Problem: connected with HDMI monitor, command reboot does not restart
the system.
[  OK  ] Started Reboot.
[  OK  ] Reached target Reboot.
[  141.734304] printk: systemd-shutdow: 24 output lines suppressed due to ratelimiting
[  141.794707] systemd-shutdown[1]: Syncing filesystems and block devices.
[  142.294581] systemd-shutdown[1]: Sending SIGTERM to remaining processes...
[  142.304272] systemd-journald[1448]: Received SIGTERM from PID 1 (systemd-shutdow).
[  142.343369] systemd-shutdown[1]: Sending SIGKILL to remaining processes...
[  142.353248] systemd-shutdown[1]: Unmounting file systems.
[  142.355617] [1762]: Remounting '/' read-only in with options '(null)'.
[  142.377999] EXT4-fs (mmcblk1p2): re-mounted. Opts: (null)
[  142.387765] systemd-shutdown[1]: All filesystems unmounted.
[  142.387897] systemd-shutdown[1]: Deactivating swaps.
[  142.393160] systemd-shutdown[1]: All swaps deactivated.
[  142.397933] systemd-shutdown[1]: Detaching loop devices.
[  142.405637] systemd-shutdown[1]: All loop devices detached.
[  142.408683] systemd-shutdown[1]: Detaching DM devices.
[  142.429138] kvm: exiting hardware virtualization
...STUCK...

Solution: remove shutdown function to meson_drm driver
[  OK  ] Started Reboot.
[  OK  ] Reached target Reboot.
[   24.509429] printk: systemd-shutdow: 24 output lines suppressed due to ratelimiting
[   24.569328] systemd-shutdown[1]: Syncing filesystems and block devices.
[   25.307349] systemd-shutdown[1]: Sending SIGTERM to remaining processes...
[   25.322408] systemd-journald[1439]: Received SIGTERM from PID 1 (systemd-shutdow).
[   25.361382] systemd-shutdown[1]: Sending SIGKILL to remaining processes...
[   25.371413] systemd-shutdown[1]: Unmounting file systems.
[   25.373722] [1755]: Remounting '/' read-only in with options '(null)'.
[   25.398110] EXT4-fs (mmcblk1p2): re-mounted. Opts: (null)
[   25.407865] systemd-shutdown[1]: All filesystems unmounted.
[   25.407992] systemd-shutdown[1]: Deactivating swaps.
[   25.413000] systemd-shutdown[1]: All swaps deactivated.
[   25.417991] systemd-shutdown[1]: Detaching loop devices.
[   25.425649] systemd-shutdown[1]: All loop devices detached.
[   25.428783] systemd-shutdown[1]: Detaching DM devices.
[   25.448956] kvm: exiting hardware virtualization
[   25.479811] reboot: Restarting system
bl31 reboot reason: 0xd
bl31 reboot reason: 0x0
system cmd  1.
...REBOOT...

Signed-off-by: Stephen <[email protected]>

drivers/gpu/drm/meson/meson_drv.c

@@ -489,17 +489,6 @@ static int meson_probe_remote(struct platform_device *pdev,
 	return count;
 }
 
-static void meson_drv_shutdown(struct platform_device *pdev)
-{
-	struct meson_drm *priv = dev_get_drvdata(&pdev->dev);
-
-	if (!priv)
-		return;
-
-	drm_kms_helper_poll_fini(priv->drm);
-	drm_atomic_helper_shutdown(priv->drm);
-}
-
 static int meson_drv_probe(struct platform_device *pdev)
 {
 	struct component_match *match = NULL;
@@ -579,7 +568,6 @@ static const struct dev_pm_ops meson_drv_pm_ops = {
 static struct platform_driver meson_drm_platform_driver = {
 	.probe      = meson_drv_probe,
 	.remove     = meson_drv_remove,
-	.shutdown   = meson_drv_shutdown,
 	.driver     = {
 		.name	= "meson-drm",
 		.of_match_table = dt_match,