From: Ajay Kumar Date: Fri, 9 Nov 2012 04:59:09 +0000 (+0900) Subject: video: exynos_dp: Reset and initialize DP before requesting irq X-Git-Tag: firefly_0821_release~3680^2~1437^2~4^2~2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=22ce19cb43e2df5b0b17159e94244d1151ea250b;p=firefly-linux-kernel-4.4.55.git video: exynos_dp: Reset and initialize DP before requesting irq If DP is not reset properly before kernel bootup(in bootloader code), there can be few pending interrupts, and sometimes they invoke DP irq handler as soon as the irq handler is registered in DP probe. So, we make the DP driver more robust by resetting and initializing DP at the earliest and then registering the irq handler. Signed-off-by: Ajay Kumar Signed-off-by: Jingoo Han --- diff --git a/drivers/video/exynos/exynos_dp_core.c b/drivers/video/exynos/exynos_dp_core.c index ebd914dd7252..5f9ac5c8a5d8 100644 --- a/drivers/video/exynos/exynos_dp_core.c +++ b/drivers/video/exynos/exynos_dp_core.c @@ -1094,13 +1094,6 @@ static int __devinit exynos_dp_probe(struct platform_device *pdev) INIT_WORK(&dp->hotplug_work, exynos_dp_hotplug); - ret = devm_request_irq(&pdev->dev, dp->irq, exynos_dp_irq_handler, 0, - "exynos-dp", dp); - if (ret) { - dev_err(&pdev->dev, "failed to request irq\n"); - return ret; - } - dp->video_info = pdata->video_info; if (pdev->dev.of_node) { @@ -1113,6 +1106,13 @@ static int __devinit exynos_dp_probe(struct platform_device *pdev) exynos_dp_init_dp(dp); + ret = devm_request_irq(&pdev->dev, dp->irq, exynos_dp_irq_handler, 0, + "exynos-dp", dp); + if (ret) { + dev_err(&pdev->dev, "failed to request irq\n"); + return ret; + } + platform_set_drvdata(pdev, dp); return 0;