[ 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 tomi.valkeinen@ti.com Signed-off-by: Andrzej Hajda a.hajda@samsung.com Link: https://patchwork.freedesktop.org/patch/msgid/20190610135739.6077-2-tomi.val... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/bridge/ti-tfp410.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c index a879aac21246..3a8af9978ebd 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);