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Date: Thu, 8 Jun 2017 00:57:37 +0200 From: Willy Tarreau <w@....eu> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, linux@...ck-us.net Cc: Johan Hovold <johan@...nel.org>, Michael Ellerman <mpe@...erman.id.au>, Willy Tarreau <w@....eu> Subject: [PATCH 3.10 071/250] powerpc/pci/rpadlpar: Fix device reference leaks From: Johan Hovold <johan@...nel.org> commit 99e5cde5eae78bef95bfe7c16ccda87fb070149b upstream. Make sure to drop any device reference taken by vio_find_node() when adding and removing virtual I/O slots. Fixes: 5eeb8c63a38f ("[PATCH] PCI Hotplug: rpaphp: Move VIO registration") Signed-off-by: Johan Hovold <johan@...nel.org> Signed-off-by: Michael Ellerman <mpe@...erman.id.au> Signed-off-by: Willy Tarreau <w@....eu> --- drivers/pci/hotplug/rpadlpar_core.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c index b29e20b..ffb2de5 100644 --- a/drivers/pci/hotplug/rpadlpar_core.c +++ b/drivers/pci/hotplug/rpadlpar_core.c @@ -259,8 +259,13 @@ static int dlpar_add_phb(char *drc_name, struct device_node *dn) static int dlpar_add_vio_slot(char *drc_name, struct device_node *dn) { - if (vio_find_node(dn)) + struct vio_dev *vio_dev; + + vio_dev = vio_find_node(dn); + if (vio_dev) { + put_device(&vio_dev->dev); return -EINVAL; + } if (!vio_register_device_node(dn)) { printk(KERN_ERR @@ -336,6 +341,9 @@ static int dlpar_remove_vio_slot(char *drc_name, struct device_node *dn) return -EINVAL; vio_unregister_device(vio_dev); + + put_device(&vio_dev->dev); + return 0; } -- 2.8.0.rc2.1.gbe9624a
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