From: "Marek Behún" <kabel@kernel.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sasha Levin <sashal@kernel.org>
Cc: stable@vger.kernel.org, pali@kernel.org,
"Marek Behún" <kabel@kernel.org>
Subject: [PATCH 5.15 10/30] PCI: aardvark: Disable link training when unbinding driver
Date: Wed, 4 May 2022 18:57:35 +0200 [thread overview]
Message-ID: <20220504165755.30002-11-kabel@kernel.org> (raw)
In-Reply-To: <20220504165755.30002-1-kabel@kernel.org>
From: Pali Rohár <pali@kernel.org>
commit 759dec2e3dfdbd261c41d2279f04f2351c971a49 upstream.
Disable link training circuit in driver unbind sequence. We want to
leave link training in the same state as it was before the driver was
probed.
Link: https://lore.kernel.org/r/20211130172913.9727-11-kabel@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Marek Behún <kabel@kernel.org>
---
drivers/pci/controller/pci-aardvark.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
index 78bc57d57926..3f6919564434 100644
--- a/drivers/pci/controller/pci-aardvark.c
+++ b/drivers/pci/controller/pci-aardvark.c
@@ -1725,6 +1725,11 @@ static int advk_pcie_remove(struct platform_device *pdev)
if (pcie->reset_gpio)
gpiod_set_value_cansleep(pcie->reset_gpio, 1);
+ /* Disable link training */
+ val = advk_readl(pcie, PCIE_CORE_CTRL0_REG);
+ val &= ~LINK_TRAINING_EN;
+ advk_writel(pcie, val, PCIE_CORE_CTRL0_REG);
+
/* Disable outbound address windows mapping */
for (i = 0; i < OB_WIN_COUNT; i++)
advk_pcie_disable_ob_win(pcie, i);
--
2.35.1
next prev parent reply other threads:[~2022-05-04 17:18 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-04 16:57 [PATCH 5.15 00/30] PCIe Aardvark controller backports for 5.15 Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 01/30] PCI: pci-bridge-emul: Add description for class_revision field Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 02/30] PCI: pci-bridge-emul: Add definitions for missing capabilities registers Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 03/30] PCI: aardvark: Add support for DEVCAP2, DEVCTL2, LNKCAP2 and LNKCTL2 registers on emulated bridge Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 04/30] PCI: aardvark: Clear all MSIs at setup Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 05/30] PCI: aardvark: Comment actions in driver remove method Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 06/30] PCI: aardvark: Disable bus mastering when unbinding driver Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 07/30] PCI: aardvark: Mask all interrupts " Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 08/30] PCI: aardvark: Fix memory leak in driver unbind Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 09/30] PCI: aardvark: Assert PERST# when unbinding driver Marek Behún
2022-05-04 16:57 ` Marek Behún [this message]
2022-05-04 16:57 ` [PATCH 5.15 11/30] PCI: aardvark: Disable common PHY " Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 12/30] PCI: aardvark: Replace custom PCIE_CORE_INT_* macros with PCI_INTERRUPT_* Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 13/30] PCI: aardvark: Rewrite IRQ code to chained IRQ handler Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 14/30] PCI: aardvark: Check return value of generic_handle_domain_irq() when processing INTx IRQ Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 15/30] PCI: aardvark: Make MSI irq_chip structures static driver structures Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 16/30] PCI: aardvark: Make msi_domain_info structure a static driver structure Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 17/30] PCI: aardvark: Use dev_fwnode() instead of of_node_to_fwnode(dev->of_node) Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 18/30] PCI: aardvark: Refactor unmasking summary MSI interrupt Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 19/30] PCI: aardvark: Add support for masking MSI interrupts Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 20/30] PCI: aardvark: Fix setting MSI address Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 21/30] PCI: aardvark: Enable MSI-X support Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 22/30] PCI: aardvark: Add support for ERR interrupt on emulated bridge Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 23/30] PCI: aardvark: Optimize writing PCI_EXP_RTCTL_PMEIE and PCI_EXP_RTSTA_PME " Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 24/30] PCI: aardvark: Add support for PME interrupts Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 25/30] PCI: aardvark: Fix support for PME requester on emulated bridge Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 26/30] PCI: aardvark: Use separate INTA interrupt for emulated root bridge Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 27/30] PCI: aardvark: Remove irq_mask_ack() callback for INTx interrupts Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 28/30] PCI: aardvark: Don't mask irq when mapping Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 29/30] PCI: aardvark: Drop __maybe_unused from advk_pcie_disable_phy() Marek Behún
2022-05-04 16:57 ` [PATCH 5.15 30/30] PCI: aardvark: Update comment about link going down after link-up Marek Behún
2022-05-10 12:06 ` [PATCH 5.15 00/30] PCIe Aardvark controller backports for 5.15 Greg Kroah-Hartman
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