media: staging: tegra-vde: Do not handle spurious interrupts

Do not handle interrupts if we haven't asked for them, potentially that
could happen if HW wasn't programmed properly.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

diff --git a/drivers/staging/media/tegra-vde/tegra-vde.c b/drivers/staging/media/tegra-vde/tegra-vde.c
index 94b4db5..9e542c6 100644 (file)
--- a/drivers/staging/media/tegra-vde/tegra-vde.c
+++ b/drivers/staging/media/tegra-vde/tegra-vde.c
@@ -935,6 +935,9 @@ static irqreturn_t tegra_vde_isr(int irq, void *data)
 {
        struct tegra_vde *vde = data;
 
+       if (completion_done(&vde->decode_completion))
+               return IRQ_NONE;
+
        tegra_vde_set_bits(vde, 0, vde->frameid + 0x208);
        complete(&vde->decode_completion);