From: David Jander <david@protonic.nl>
Date: Thu, 2 Jul 2015 14:21:57 +0000 (+0200)
Subject: gpu: ipu-v3: Reset IPU before activating IRQ
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=596a65d152fdc777ee7a2c7cbea9a7916350bed1;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

gpu: ipu-v3: Reset IPU before activating IRQ

If we don't come out of a clean reset, make sure no IRQ is fired before
everything is setup by resetting the IPU before activating the interrupt
handlers.

Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---

diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index a0e28f3a278d..e00db3f510dd 100644
--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -1292,10 +1292,6 @@ static int ipu_probe(struct platform_device *pdev)
 	ipu->irq_sync = irq_sync;
 	ipu->irq_err = irq_err;
 
-	ret = ipu_irq_init(ipu);
-	if (ret)
-		goto out_failed_irq;
-
 	ret = device_reset(&pdev->dev);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to reset: %d\n", ret);
@@ -1305,6 +1301,10 @@ static int ipu_probe(struct platform_device *pdev)
 	if (ret)
 		goto out_failed_reset;
 
+	ret = ipu_irq_init(ipu);
+	if (ret)
+		goto out_failed_irq;
+
 	/* Set MCU_T to divide MCU access window into 2 */
 	ipu_cm_write(ipu, 0x00400000L | (IPU_MCU_T_DEFAULT << 18),
 			IPU_DISP_GEN);
@@ -1327,9 +1327,9 @@ static int ipu_probe(struct platform_device *pdev)
 failed_add_clients:
 	ipu_submodules_exit(ipu);
 failed_submodules_init:
-out_failed_reset:
 	ipu_irq_exit(ipu);
 out_failed_irq:
+out_failed_reset:
 	clk_disable_unprepare(ipu->clk);
 	return ret;
 }