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PCI/ASPM: Move pci_function_0() upward 

Move pci_function_0() earlier so we can use it from other functions.

Link: https://lore.kernel.org/r/20211119193732.12343-2-refactormyself@gmail.com
Signed-off-by: Bolarinwa O. Saheed <refactormyself@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Bolarinwa O. Saheed 2021-11-19 20:37:29 +01:00 committed by Bjorn Helgaas
parent fa55b7dcdc
commit 43262f001b
1 changed files with 14 additions and 14 deletions
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28
drivers/pci/pcie/aspm.c
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@ -105,6 +105,20 @@ static const char *policy_str[] = {
#define LINK_RETRAIN_TIMEOUT HZ
/*
* The L1 PM substate capability is only implemented in function 0 in a
* multi function device.
*/
static struct pci_dev *pci_function_0(struct pci_bus *linkbus)
{
struct pci_dev *child;
list_for_each_entry(child, &linkbus->devices, bus_list)
if (PCI_FUNC(child->devfn) == 0)
return child;
return NULL;
}
static int policy_to_aspm_state(struct pcie_link_state *link)
{
switch (aspm_policy) {
@ -423,20 +437,6 @@ static void pcie_aspm_check_latency(struct pci_dev *endpoint)
}
}
/*
* The L1 PM substate capability is only implemented in function 0 in a
* multi function device.
*/
static struct pci_dev *pci_function_0(struct pci_bus *linkbus)
{
struct pci_dev *child;
list_for_each_entry(child, &linkbus->devices, bus_list)
if (PCI_FUNC(child->devfn) == 0)
return child;
return NULL;
}
static void pci_clear_and_set_dword(struct pci_dev *pdev, int pos,
u32 clear, u32 set)
{