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Subject[PATCH v2 1/2] PCI: Export pci_dev_trylock() and pci_dev_unlock()
Date
Other places in the kernel use this form, and so just
provide a common path for it.

Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
drivers/pci/pci.c | 6 ++++--
include/linux/pci.h | 3 +++
2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index f09821af1d2e..b1d9bb3f5ae2 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -5027,7 +5027,7 @@ static void pci_dev_lock(struct pci_dev *dev)
}

/* Return 1 on successful lock, 0 on contention */
-static int pci_dev_trylock(struct pci_dev *dev)
+int pci_dev_trylock(struct pci_dev *dev)
{
if (pci_cfg_access_trylock(dev)) {
if (device_trylock(&dev->dev))
@@ -5037,12 +5037,14 @@ static int pci_dev_trylock(struct pci_dev *dev)

return 0;
}
+EXPORT_SYMBOL_GPL(pci_dev_trylock);

-static void pci_dev_unlock(struct pci_dev *dev)
+void pci_dev_unlock(struct pci_dev *dev)
{
device_unlock(&dev->dev);
pci_cfg_access_unlock(dev);
}
+EXPORT_SYMBOL_GPL(pci_dev_unlock);

static void pci_dev_save_and_disable(struct pci_dev *dev)
{
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 6248e044dd29..d8f056f3a2e3 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1622,6 +1622,9 @@ void pci_cfg_access_lock(struct pci_dev *dev);
bool pci_cfg_access_trylock(struct pci_dev *dev);
void pci_cfg_access_unlock(struct pci_dev *dev);

+int pci_dev_trylock(struct pci_dev *dev);
+void pci_dev_unlock(struct pci_dev *dev);
+
/*
* PCI domain support. Sometimes called PCI segment (eg by ACPI),
* a PCI domain is defined to be a set of PCI buses which share
--
2.30.2
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