linux-kernel - [PATCH 5.13 177/266] PCI: tegra194: Fix host initialization during resume

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Message-Id: <20210715182643.127074828@linuxfoundation.org>
Date:   Thu, 15 Jul 2021 20:38:52 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jon Hunter <jonathanh@...dia.com>,
        Vidya Sagar <vidyas@...dia.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Subject: [PATCH 5.13 177/266] PCI: tegra194: Fix host initialization during resume

From: Vidya Sagar <vidyas@...dia.com>

commit c4bf1f25c6c187864681d5ad4dd1fa92f62d5d32 upstream.

Commit 275e88b06a27 ("PCI: tegra: Fix host link initialization") broke
host initialization during resume as it misses out calling the API
dw_pcie_setup_rc() which is required for host and MSI initialization.

Link: https://lore.kernel.org/r/20210504172157.29712-1-vidyas@nvidia.com
Fixes: 275e88b06a27 ("PCI: tegra: Fix host link initialization")
Tested-by: Jon Hunter <jonathanh@...dia.com>
Signed-off-by: Vidya Sagar <vidyas@...dia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/pci/controller/dwc/pcie-tegra194.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -2214,6 +2214,8 @@ static int tegra_pcie_dw_resume_noirq(st
 		goto fail_host_init;
 	}
 
+	dw_pcie_setup_rc(&pcie->pci.pp);
+
 	ret = tegra_pcie_dw_start_link(&pcie->pci);
 	if (ret < 0)
 		goto fail_host_init;