From: Guenter Roeck <linux@roeck-us.net>
To: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
Guenter Roeck <linux@roeck-us.net>,
Rajat Jain <rajatxjain@gmail.com>
Subject: [PATCH] PCI: pciehp: Always protect pciehp_disable_slot() with hotplug mutex
Date: Sun, 1 Nov 2015 13:58:40 -0800 [thread overview]
Message-ID: <1446415120-14867-1-git-send-email-linux@roeck-us.net> (raw)
When called from pciehp_sysfs_disable_slot(), the call to
pciehp_disable_slot() was not protected by the hotplug mutex.
Cc: Rajat Jain <rajatxjain@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
drivers/pci/hotplug/pciehp_ctrl.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 4c8f4cde6854..880978b6d534 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -511,7 +511,9 @@ int pciehp_sysfs_disable_slot(struct slot *p_slot)
case STATIC_STATE:
p_slot->state = POWEROFF_STATE;
mutex_unlock(&p_slot->lock);
+ mutex_lock(&p_slot->hotplug_lock);
retval = pciehp_disable_slot(p_slot);
+ mutex_unlock(&p_slot->hotplug_lock);
mutex_lock(&p_slot->lock);
p_slot->state = STATIC_STATE;
break;
--
2.1.4
next reply other threads:[~2015-11-01 21:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-01 21:58 Guenter Roeck [this message]
2015-11-05 3:01 ` [PATCH] PCI: pciehp: Always protect pciehp_disable_slot() with hotplug mutex Rajat Jain
[not found] ` <CAA93t1o1tFvZDiBNfU62q+sfiykVxKCAs_ZWJ-uDjyEWaLEwoQ@mail.gmail.com>
2015-11-05 5:14 ` Guenter Roeck
2015-11-25 17:48 ` Bjorn Helgaas
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