From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
We probe every device for whether it supports reset so we can tell whether
to create a sysfs "reset" file for it. We do that probe in
pci_init_capabilities() during enumeration and save the result in
dev->reset_fn. The result doesn't depend on any other devices on the bus
and shouldn't change after boot, so we don't need to do the probe again.
Remove the pci_probe_reset_function() calls and rely on the dev->reset_fn
we found during enumeration. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
---
drivers/pci/pci.c | 15 ++++++---------
1 file changed, 6 insertions(+), 9 deletions(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index f6a4dd10d9b0..4db740e4f50a 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -4450,9 +4450,8 @@ int pci_reset_function(struct pci_dev *dev)
{
int rc;
- rc = pci_probe_reset_function(dev);
- if (rc)
- return rc;
+ if (!dev->reset_fn)
+ return -ENOTTY;
pci_dev_lock(dev);
pci_dev_save_and_disable(dev);
@@ -4487,9 +4486,8 @@ int pci_reset_function_locked(struct pci_dev *dev)
{
int rc;
- rc = pci_probe_reset_function(dev);
- if (rc)
- return rc;
+ if (!dev->reset_fn)
+ return -ENOTTY;
pci_dev_save_and_disable(dev);
@@ -4511,9 +4509,8 @@ int pci_try_reset_function(struct pci_dev *dev)
{
int rc;
- rc = pci_probe_reset_function(dev);
- if (rc)
- return rc;
+ if (!dev->reset_fn)
+ return -ENOTTY;
if (!pci_dev_trylock(dev))
return -EAGAIN;
