[STABLE v6.1 4/6] HID: steam: Rearrange teardown sequence

[Lee Jones]

From: Vicki Pfau <vi@xxxxxxxxxxx>

[ Upstream commit ddce9641ce924ed91ec8304577e463823a29ffaf ]

This fixes a narrow window during the teardown sequence where callbacks
could still be scheduled during cleanup that would then have a dangling
pointer to the now-freed steam struct.

This also puts work canceling for rumble and mode switch in
steam_unregister, as that shouldn't persist while the client hdev is open.

Signed-off-by: Vicki Pfau <vi@xxxxxxxxxxx>
Signed-off-by: Jiri Kosina <jkosina@xxxxxxxx>
[Lee: Omit rumble_work, coalesce_rumble_work and mode_switch
      cancellation as e133dc99fc07 and 1d4549fd1115 are not present]
Signed-off-by: Lee Jones <lee@xxxxxxxxxx>
---
 drivers/hid/hid-steam.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/hid/hid-steam.c b/drivers/hid/hid-steam.c
index e8f28c59a303..0e5fba060c91 100644
--- a/drivers/hid/hid-steam.c
+++ b/drivers/hid/hid-steam.c
@@ -829,15 +829,16 @@ static void steam_remove(struct hid_device *hdev)
 		return;
 	}
 
+	hid_hw_close(hdev);
 	hid_destroy_device(steam->client_hdev);
+	steam->client_hdev = NULL;
 	steam->client_opened = 0;
 	cancel_work_sync(&steam->work_connect);
 	if (steam->quirks & STEAM_QUIRK_WIRELESS) {
 		hid_info(hdev, "Steam wireless receiver disconnected");
 	}
-	hid_hw_close(hdev);
-	hid_hw_stop(hdev);
 	steam_unregister(steam);
+	hid_hw_stop(hdev);
 }
 
 static void steam_do_connect_event(struct steam_device *steam, bool connected)
-- 
2.56.0.385.gd3acb90ef8-goog