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X-UUID: af53a1923917446cbd3040c63b67634c-20200530 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 1038220398; Sat, 30 May 2020 16:14:36 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 30 May 2020 16:14:32 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sat, 30 May 2020 16:14:33 +0800 From: Yong Wu To: Matthias Brugger , Joerg Roedel , Rob Herring 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 Message-ID: <1590826218-23653-15-git-send-email-yong.wu@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1590826218-23653-1-git-send-email-yong.wu@mediatek.com> References: <1590826218-23653-1-git-send-email-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, Nicolas Boichat , cui.zhang@mediatek.com, eizan@chromium.org, srv_heupstream@mediatek.com, chao.hao@mediatek.com, Will Deacon , linux-kernel@vger.kernel.org, Evan Green , Tomasz Figa , iommu@lists.linux-foundation.org, Matthias Kaehlcke , linux-mediatek@lists.infradead.org, ming-fan.chen@mediatek.com, anan.sun@mediatek.com, Robin Murphy , acourbot@chromium.org, linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" smi-larb driver should run after smi-common, Use device_is_bound to confirm whether smicommon driver is ready. CC: Matthias Brugger Signed-off-by: Yong Wu --- 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 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu