From: Keith Busch <keith.busch@intel.com>
To: linux-pci@vger.kernel.org, alex.williamson@redhat.com,
bhelgaas@google.com
Cc: Keith Busch <keith.busch@intel.com>
Subject: [PATCHv2 1/2] PCI: call pci reset callback to pci_driver on FLR
Date: Mon, 13 Jan 2014 15:26:27 -0700 [thread overview]
Message-ID: <1389651988-27392-2-git-send-email-keith.busch@intel.com> (raw)
In-Reply-To: <1389651988-27392-1-git-send-email-keith.busch@intel.com>
A user can issue a pci function level reset to a device using sysfs
entry /sys/bus/pci/devices/.../reset. A kernel driver handling the
pci device probably would like to know that such a reset has occured,
so this patch calls the pci_driver's slot_reset pci_error_handler.
Signed-off-by: Keith Busch <keith.busch@intel.com>
---
drivers/pci/pci.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index b127fbda..1bfddc5 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3584,6 +3584,12 @@ int pci_reset_function(struct pci_dev *dev)
pci_dev_restore(dev);
+ if (!rc) {
+ const struct pci_error_handlers *err_handler = dev->driver ?
+ dev->driver->err_handler : NULL;
+ if (err_handler && err_handler->slot_reset)
+ err_handler->slot_reset(dev);
+ }
return rc;
}
EXPORT_SYMBOL_GPL(pci_reset_function);
--
1.7.10.4
next prev parent reply other threads:[~2014-01-13 22:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-13 22:26 [PATCHv2 0/2] PCI: driver function reset notification Keith Busch
2014-01-13 22:26 ` Keith Busch [this message]
2014-01-13 22:26 ` [PATCHv2 2/2] NVMe: Implement pci reset callback Keith Busch
2014-01-16 18:49 ` [PATCHv2 0/2] PCI: driver function reset notification Bjorn Helgaas
2014-01-16 19:10 ` Alex Williamson
2014-01-16 20:38 ` Keith Busch
2014-01-17 17:26 ` Bjorn Helgaas
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