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[v1,4/5] media: staging: tegra-vde: Do not handle spurious interrupts

Message ID 8d1b583bde182ab79a18f43df83f87affda6b174.1521300358.git.digetx@gmail.com
State Deferred
Headers show
Series Tegra Video Decoder patches for 4.17 | expand

Commit Message

Dmitry Osipenko March 17, 2018, 3:28 p.m. UTC 
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>
---
 drivers/staging/media/tegra-vde/tegra-vde.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/drivers/staging/media/tegra-vde/tegra-vde.c b/drivers/staging/media/tegra-vde/tegra-vde.c
index 94b4db55cdb5..9e542c6288f1 100644
--- 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);