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From: Yong Wu <yong.wu@mediatek.com>
To: Matthias Brugger <matthias.bgg@gmail.com>,
	Joerg Roedel <joro@8bytes.org>,  Rob Herring <robh+dt@kernel.org>
Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org,
	Nicolas Boichat <drinkcat@chromium.org>,
	cui.zhang@mediatek.com, eizan@chromium.org,
	srv_heupstream@mediatek.com, chao.hao@mediatek.com,
	Will Deacon <will.deacon@arm.com>,
	linux-kernel@vger.kernel.org, Evan Green <evgreen@chromium.org>,
	Tomasz Figa <tfiga@google.com>,
	iommu@lists.linux-foundation.org,
	Matthias Kaehlcke <mka@chromium.org>,
	linux-mediatek@lists.infradead.org, yong.wu@mediatek.com,
	ming-fan.chen@mediatek.com, anan.sun@mediatek.com,
	Robin Murphy <robin.murphy@arm.com>,
	acourbot@chromium.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 14/17] memory: mtk-smi: Use device_is_bound to check if smi-common is ready
Date: Sat, 30 May 2020 16:10:15 +0800	[thread overview]
Message-ID: <1590826218-23653-15-git-send-email-yong.wu@mediatek.com> (raw)
In-Reply-To: <1590826218-23653-1-git-send-email-yong.wu@mediatek.com>

smi-larb driver should run after smi-common, Use device_is_bound to confirm
whether smicommon driver is ready.

CC: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
 drivers/memory/mtk-smi.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c
index 19c3949..0f8cd50 100644
--- a/drivers/memory/mtk-smi.c
+++ b/drivers/memory/mtk-smi.c
@@ -296,8 +296,14 @@ static int mtk_smi_larb_probe(struct platform_device *pdev)
 	smi_pdev = of_find_device_by_node(smi_node);
 	of_node_put(smi_node);
 	if (smi_pdev) {
-		if (!platform_get_drvdata(smi_pdev))
+		bool smicommon_is_bound;
+
+		device_lock(&smi_pdev->dev);
+		smicommon_is_bound = device_is_bound(&smi_pdev->dev);
+		device_unlock(&smi_pdev->dev);
+		if (!smicommon_is_bound)
 			return -EPROBE_DEFER;
+
 		larb->smi_common_dev = &smi_pdev->dev;
 		link = device_link_add(dev, larb->smi_common_dev,
 				       DL_FLAG_PM_RUNTIME | DL_FLAG_STATELESS);
-- 
1.9.1
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  parent reply	other threads:[~2020-05-30  8:23 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-30  8:10 [PATCH v4 00/17] Clean up "mediatek,larb" after adding device_link Yong Wu
2020-05-30  8:10 ` [PATCH v4 01/17] media: dt-binding: mtk-vcodec: Separating mtk-vcodec encode node Yong Wu
2020-06-09 21:21   ` Rob Herring
2020-06-10  6:46     ` Alexandre Courbot
2020-06-10  7:38       ` Tiffany Lin
2020-06-17  5:53         ` Tiffany Lin
2020-05-30  8:10 ` [PATCH v4 02/17] dt-binding: mediatek: Get rid of mediatek, larb for multimedia HW Yong Wu
2020-05-30  8:10 ` [PATCH v4 03/17] iommu/mediatek: Add probe_defer for smi-larb Yong Wu
2020-05-30  8:10 ` [PATCH v4 04/17] iommu/mediatek: Add device_link between the consumer and the larb devices Yong Wu
2020-05-30  8:10 ` [PATCH v4 05/17] memory: mtk-smi: Add device-link between smi-larb and smi-common Yong Wu
2020-05-30  8:10 ` [PATCH v4 06/17] media: mtk-jpeg: Get rid of mtk_smi_larb_get/put Yong Wu
2020-06-18  9:32   ` Yong Wu
2020-06-18 17:28     ` Rick Chang
2020-05-30  8:10 ` [PATCH v4 07/17] media: mtk-mdp: " Yong Wu
2020-05-30  8:10 ` [PATCH v4 08/17] media: mtk-vcodec: separate mtk-vcodec-enc node Yong Wu
2020-06-10  5:45   ` CK Hu
2020-06-10  6:13     ` Tiffany Lin
2020-05-30  8:10 ` [PATCH v4 09/17] media: mtk-vcodec: Get rid of mtk_smi_larb_get/put Yong Wu
2020-06-10  5:47   ` CK Hu
2020-06-10  6:20     ` Tiffany Lin
2020-05-30  8:10 ` [PATCH v4 10/17] drm/mediatek: Add pm runtime support for ovl and rdma Yong Wu
2020-05-30 11:07   ` Chun-Kuang Hu
2020-05-30  8:10 ` [PATCH v4 11/17] drm/mediatek: Get rid of mtk_smi_larb_get/put Yong Wu
2020-05-30 11:08   ` Chun-Kuang Hu
2020-05-30  8:10 ` [PATCH v4 12/17] memory: mtk-smi: " Yong Wu
2020-05-30  8:10 ` [PATCH v4 13/17] iommu/mediatek: Use module_platform_driver Yong Wu
2020-05-30  8:10 ` Yong Wu [this message]
2020-05-30  8:10 ` [PATCH v4 15/17] arm: dts: mediatek: Get rid of mediatek, larb for MM nodes Yong Wu
2020-05-30  8:10 ` [PATCH v4 16/17] arm64: dts: mt8173: Separate mtk-vcodec-enc node Yong Wu
2020-05-30  8:10 ` [PATCH v4 17/17] arm64: dts: mediatek: Get rid of mediatek, larb for MM nodes Yong Wu

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