linux-kernel - [PATCH 3.12 110/212] PCI: Remove duplicate pci_disable_device() from pcie_portdrv

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Message-Id: <20131202191259.526492554@linuxfoundation.org>
Date:	Mon,  2 Dec 2013 11:15:01 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, David Bulkow <David.Bulkow@...atus.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Yinghai Lu <yinghai@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>
Subject: [PATCH 3.12 110/212] PCI: Remove duplicate pci_disable_device() from pcie_portdrv_remove()

3.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Yinghai Lu <yinghai@...nel.org>

commit e7cc5cf74544d97d7b69e2701595037474db1f96 upstream.

The pcie_portdrv .probe() method calls pci_enable_device() once, in
pcie_port_device_register(), but the .remove() method calls
pci_disable_device() twice, in pcie_port_device_remove() and in
pcie_portdrv_remove().

That causes a "disabling already-disabled device" warning when removing a
PCIe port device.  This happens all the time when removing Thunderbolt
devices, but is also easy to reproduce with, e.g.,
"echo 0000:00:1c.3 > /sys/bus/pci/drivers/pcieport/unbind"

This patch removes the disable from pcie_portdrv_remove().

[bhelgaas: changelog, tag for stable]
Reported-by: David Bulkow <David.Bulkow@...atus.com>
Reported-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
Signed-off-by: Yinghai Lu <yinghai@...nel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/pci/pcie/portdrv_pci.c |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -223,7 +223,6 @@ static int pcie_portdrv_probe(struct pci
 static void pcie_portdrv_remove(struct pci_dev *dev)
 {
 	pcie_port_device_remove(dev);
-	pci_disable_device(dev);
 }
 
 static int error_detected_iter(struct device *device, void *data)


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