drm: xlnx: vtc: Return IRQ_NONE for no interrupt

Return IRQ_NONE in the interrupt handler, when there's no interrupt. Signed-off-by: Hyun Kwon <[email protected]> Signed-off-by: Michal Simek <[email protected]> State: pending
fxjfsy · Feb 12, 2020 · 974054e · 974054e
1 parent 61f5ba1
commit 974054e
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/gpu/drm/xlnx/xlnx_vtc.c b/drivers/gpu/drm/xlnx/xlnx_vtc.c
@@ -509,6 +509,9 @@ static irqreturn_t xilinx_vtc_intr_handler(int irq, void *data)
 
 	u32 intr = xlnx_vtc_intr_get(vtc);
 
+	if (!intr)
+		return IRQ_NONE;
+
 	if ((intr & VTC_IXR_G_VBLANK) && (vtc->vblank_fn))
 		vtc->vblank_fn(vtc->vblank_data);