On Saturday, November 03, 2012 4:07 PM Ajay Kumar wrote
> Subject: video: exynos_dp: Reset and initialize DP before requesting irq
Please don't forget to add "[PATCH] " as below.
[PATCH] 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 <ajaykumar.rs@xxxxxxxxxxx>
Acked-by: Jingoo Han <jg1.han@xxxxxxxxxxx>
Tested with Exynos5250.
> ---
> drivers/video/exynos/exynos_dp_core.c | 12 ++++++------
> 1 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/video/exynos/exynos_dp_core.c b/drivers/video/exynos/exynos_dp_core.c
> index d55470e..d241fd3 100644
> --- a/drivers/video/exynos/exynos_dp_core.c
> +++ b/drivers/video/exynos/exynos_dp_core.c
> @@ -901,6 +901,12 @@ static int __devinit exynos_dp_probe(struct platform_device *pdev)
> return -ENODEV;
> }
>
> + dp->video_info = pdata->video_info;
> + if (pdata->phy_init)
> + pdata->phy_init();
> +
> + exynos_dp_init_dp(dp);
> +
> ret = devm_request_irq(&pdev->dev, dp->irq, exynos_dp_irq_handler, 0,
> "exynos-dp", dp);
> if (ret) {
> @@ -908,12 +914,6 @@ static int __devinit exynos_dp_probe(struct platform_device *pdev)
> return ret;
> }
>
> - dp->video_info = pdata->video_info;
> - if (pdata->phy_init)
> - pdata->phy_init();
> -
> - exynos_dp_init_dp(dp);
> -
> ret = exynos_dp_detect_hpd(dp);
> if (ret) {
> dev_err(&pdev->dev, "unable to detect hpd\n");
> --
> 1.7.0.4
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