From: Tomi Valkeinen Date: Mon, 10 Jun 2019 13:57:39 +0000 (+0300) Subject: drm/bridge: tfp410: fix use of cancel_delayed_work_sync X-Git-Tag: v5.2.5~154 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=23c2c8bdfa698a73a83e5e22e64c24f1a5be629c;p=thirdparty%2Fkernel%2Fstable.git drm/bridge: tfp410: fix use of cancel_delayed_work_sync [ Upstream commit b1622cb3be4557fd086831ca7426eafe5f1acc2e ] We use delayed_work in HPD handling, and cancel any scheduled work in tfp410_fini using cancel_delayed_work_sync(). However, we have only initialized the delayed work if we actually have a HPD interrupt configured in the DT, but in the tfp410_fini, we always cancel the work, possibly causing a WARN(). Fix this by doing the cancel only if we actually had the delayed work set up. Signed-off-by: Tomi Valkeinen Signed-off-by: Andrzej Hajda Link: https://patchwork.freedesktop.org/patch/msgid/20190610135739.6077-2-tomi.valkeinen@ti.com Signed-off-by: Sasha Levin --- diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c index a879aac212462..3a8af9978ebdf 100644 --- a/drivers/gpu/drm/bridge/ti-tfp410.c +++ b/drivers/gpu/drm/bridge/ti-tfp410.c @@ -372,7 +372,8 @@ static int tfp410_fini(struct device *dev) { struct tfp410 *dvi = dev_get_drvdata(dev); - cancel_delayed_work_sync(&dvi->hpd_work); + if (dvi->hpd_irq >= 0) + cancel_delayed_work_sync(&dvi->hpd_work); drm_bridge_remove(&dvi->bridge);