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From: Manikanta Maddireddy <mmaddireddy@nvidia.com>
To: <lpieralisi@kernel.org>, <kwilczynski@kernel.org>,
	<mani@kernel.org>, <bhelgaas@google.com>,
	<linux-pci@vger.kernel.org>
Cc: <robh@kernel.org>, <thierry.reding@kernel.org>,
	<jonathanh@nvidia.com>, <kishon@kernel.org>,
	<Frank.Li@kernel.org>, <vidyas@nvidia.com>, <cassel@kernel.org>,
	<den@valinux.co.jp>, <marco.crivellari@suse.com>,
	<andriy.shevchenko@linux.intel.com>,
	<linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<mmaddireddy@nvidia.com>
Subject: [PATCH v2 04/10] PCI: tegra194: Do not skip no-link Root Port remove cleanup
Date: Wed, 21 Oct 2026 11:43:43 +0530	[thread overview]
Message-ID: <20261021061349.1265704-5-mmaddireddy@nvidia.com> (raw)
In-Reply-To: <20261021061349.1265704-1-mmaddireddy@nvidia.com>

tegra_pcie_config_rp() deinitializes the controller and disables runtime PM
when link training fails, then probe treats -ENOMEDIUM as success so the
driver can remain bound without a link.

remove() returned immediately when the Root Port link was down. That skips
common cleanup such as tegra_bpmp_put() and deasserting the refclk-select
GPIO. Keep link-dependent controller teardown conditional, but always run
common remove cleanup.

Fixes: 56e15a238d92 ("PCI: tegra: Add Tegra194 PCIe support")
Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
---
Changes V1 -> V2: None

 drivers/pci/controller/dwc/pcie-tegra194.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index 0f895c766a71..fb8084cef38b 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -2352,19 +2352,19 @@ static void tegra_pcie_dw_remove(struct platform_device *pdev)
 	struct dw_pcie_ep *ep = &pcie->pci.ep;
 
 	if (pcie->of_data->mode == DW_PCIE_RC_TYPE) {
-		if (!pcie->link_state)
-			return;
-
-		debugfs_remove_recursive(pcie->debugfs);
-		tegra_pcie_deinit_controller(pcie);
-		pm_runtime_put_sync(pcie->dev);
+		if (pcie->link_state) {
+			debugfs_remove_recursive(pcie->debugfs);
+			tegra_pcie_deinit_controller(pcie);
+			pm_runtime_put_sync(pcie->dev);
+			pm_runtime_disable(pcie->dev);
+		}
 	} else {
 		disable_irq(pcie->pex_rst_irq);
 		pex_ep_event_pex_rst_assert(pcie);
 		dw_pcie_ep_deinit(ep);
+		pm_runtime_disable(pcie->dev);
 	}
 
-	pm_runtime_disable(pcie->dev);
 	tegra_bpmp_put(pcie->bpmp);
 	if (pcie->pex_refclk_sel_gpiod)
 		gpiod_set_value(pcie->pex_refclk_sel_gpiod, 0);
-- 
2.34.1


  parent reply	other threads:[~2026-10-21  6:15 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-21  6:13 [PATCH v2 00/10] PCI: tegra194: Fix EP and Root Port corner cases Manikanta Maddireddy
2026-10-21  6:13 ` [PATCH v2 01/10] PCI: tegra194: Propagate REFCLK select GPIO errors Manikanta Maddireddy
2026-10-21 15:14   ` Frank Li
2026-10-21  6:13 ` [PATCH v2 02/10] PCI: tegra194: Check core reset deassertion Manikanta Maddireddy
2026-10-21 15:16   ` Frank Li
2026-10-21  6:13 ` [PATCH v2 03/10] PCI: tegra194: Fix Endpoint PERST# IRQ suspend race Manikanta Maddireddy
2026-10-21 15:19   ` Frank Li
2026-10-21  6:13 ` Manikanta Maddireddy [this message]
2026-10-21 15:22   ` [PATCH v2 04/10] PCI: tegra194: Do not skip no-link Root Port remove cleanup Frank Li
2026-10-21  6:13 ` [PATCH v2 05/10] PCI: tegra194: Check for 16 GT/s capability before programming Manikanta Maddireddy
2026-10-21 15:24   ` Frank Li
2026-10-21  6:13 ` [PATCH v2 06/10] PCI: tegra194: Check for L1SS " Manikanta Maddireddy
2026-10-21 15:28   ` Frank Li
2026-10-21  6:13 ` [PATCH v2 07/10] PCI: tegra194: Always disable Tegra234 Endpoint L1.2 Manikanta Maddireddy
2026-10-21 15:32   ` Frank Li
2026-10-21  6:13 ` [PATCH v2 08/10] PCI: tegra194: Guard Endpoint PLL-off error path Manikanta Maddireddy
2026-10-21 15:36   ` Frank Li
2026-10-21  6:13 ` [PATCH v2 09/10] PCI: tegra194: Balance core monitor clock on failures Manikanta Maddireddy
2026-10-21 15:43   ` Frank Li
2026-10-21  6:13 ` [PATCH v2 10/10] PCI: tegra194: Reject zero MSI interrupt number Manikanta Maddireddy
2026-10-21 15:44   ` Frank Li

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