From a92d81456c08ea6917a7630718837f0a01cbd0d0 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Mon, 29 Aug 2016 08:32:03 +0200 Subject: [PATCH] gpu: ipu-v3: initially clear all interrupts If we want to stop resetting the IPU in the future, masking all interrupts before registering the irq handlers will not be enough to avoid spurious interrupts. We also have to clear them. Signed-off-by: Philipp Zabel Acked-by: Liu Ying --- drivers/gpu/ipu-v3/ipu-common.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c index b7d7bd6e3d60..97218af4fe75 100644 --- a/drivers/gpu/ipu-v3/ipu-common.c +++ b/drivers/gpu/ipu-v3/ipu-common.c @@ -1286,8 +1286,11 @@ static int ipu_irq_init(struct ipu_soc *ipu) return ret; } - for (i = 0; i < IPU_NUM_IRQS; i += 32) + /* Mask and clear all interrupts */ + for (i = 0; i < IPU_NUM_IRQS; i += 32) { ipu_cm_write(ipu, 0, IPU_INT_CTRL(i / 32)); + ipu_cm_write(ipu, ~unused[i / 32], IPU_INT_STAT(i / 32)); + } for (i = 0; i < IPU_NUM_IRQS; i += 32) { gc = irq_get_domain_generic_chip(ipu->domain, i); -- 2.30.2