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From: Inki Dae <inki.dae@samsung.com>
To: airlied@linux.ie, dri-devel@lists.freedesktop.org
Cc: linux-samsung-soc@vger.kernel.org
Subject: [PATCH] drm/exynos: resolve infinite loop issue on multi-platform
Date: Thu, 06 Nov 2014 19:32:45 +0900	[thread overview]
Message-ID: <1415269965-427-1-git-send-email-inki.dae@samsung.com> (raw)

This patch resolves temporarily infinite loop issue incurred
when Exynos drm driver is enabled and multi-platform kernel
is used by registering Exynos drm device object only in case
of Exynos SoC. So this patch will be replaced with more generic
way later.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_drv.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 443a206..ecc86aa 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -734,6 +734,18 @@ static int exynos_drm_init(void)
 {
 	int ret;
 
+	/*
+	 * Register device object only in case of Exynos SoC.
+	 *
+	 * Below codes resolves temporarily infinite loop issue incurred
+	 * by Exynos drm driver when using multi-platform kernel.
+	 * So these codes will be replaced with more generic way later.
+	 */
+	if (!of_machine_is_compatible("samsung,exynos3") &&
+			!of_machine_is_compatible("samsung,exynos4") &&
+			!of_machine_is_compatible("samsung,exynos5"))
+		return -ENODEV;
+
 	exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
 								NULL, 0);
 	if (IS_ERR(exynos_drm_pdev))
-- 
1.7.9.5

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             reply	other threads:[~2014-11-06 10:32 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-06 10:32 Inki Dae [this message]
2014-11-06 12:11 ` [PATCH] drm/exynos: resolve infinite loop issue on multi-platform Krzysztof Kozłowski
2014-11-06 12:32   ` Inki Dae
2014-11-06 13:00     ` Krzysztof Kozlowski
2014-11-06 13:44       ` Inki Dae

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