On 06-Dec-17 1:34 AM, Bjorn Helgaas wrote:
> On Fri, Dec 01, 2017 at 02:50:02PM +0530, Manikanta Maddireddy wrote:
>> PCI subsystem pass pci_bus pointer to pci_ops callback functions, Tegra
>
> s/PCI subsystem pass/The PCI subsystem passes a/
> s/, Tegra/. The Tegra/
>
>> host driver use pci_find_host_bridge() to get pci_host_bridge from pci_bus.
>
> s/use/uses/
>
>> Export pci_find_host_bridge() to allow Tegra PCIe driver to be compiled as
>> loadable kernel module.
>
> s/allow Tegra/allow the Tegra/
> s/loadable/a loadable/
>
> But why do you need pci_find_host_bridge() at all? Most drivers use
> the pci_bus.sysdata pointer for this purpose, e.g., see db271747a04d
> ("PCI: mediatek: Use bus->sysdata to get host private data")
>
I will send a patch to use bus->sysdata instead of pci_find_host_bridge().
>> Signed-off-by: Manikanta Maddireddy <mmaddireddy@xxxxxxxxxx>
>> ---
>> V2:
>> * commit message update
>> V3:
>> * EXPORT_SYMBOL is changed to EXPORT_SYMBOL_GPL
>>
>> drivers/pci/host-bridge.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c
>> index add66236215c..b8c0fcde9bd7 100644
>> --- a/drivers/pci/host-bridge.c
>> +++ b/drivers/pci/host-bridge.c
>> @@ -22,6 +22,7 @@ struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus)
>>
>> return to_pci_host_bridge(root_bus->bridge);
>> }
>> +EXPORT_SYMBOL_GPL(pci_find_host_bridge);
>>
>> struct device *pci_get_host_bridge_device(struct pci_dev *dev)
>> {
>> --
>> 2.1.4
>>
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