github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-31 02:24:24 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

PCI: Refactor remove_dev_resources() to use pbus_select_window()

Browse Source 
Convert remove_dev_resources() to use pbus_select_window(). As 'available'
is not the real resources, the index has to be adjusted as only bridge
resource counterparts are present in the 'available' array.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20250829131113.36754-22-ilpo.jarvinen@linux.intel.com
This commit is contained in:
Ilpo Järvinen 2025-08-29 16:11:10 +03:00 committed by Bjorn Helgaas
parent 4292a1e45f
commit aaae2863e7
1 changed files with 9 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
drivers/pci/setup-bus.c
View File

@ -2062,34 +2062,18 @@ static void remove_dev_resource(struct resource *avail, struct pci_dev *dev,
static void remove_dev_resources(struct pci_dev *dev,
struct resource available[PCI_P2P_BRIDGE_RESOURCE_NUM])
{
struct resource *mmio_pref = &available[PCI_BUS_BRIDGE_PREF_MEM_WINDOW];
struct resource *res;
struct resource *res, *b_win;
int idx;
pci_dev_for_each_resource(dev, res) {
if (resource_type(res) == IORESOURCE_IO) {
remove_dev_resource(&available[PCI_BUS_BRIDGE_IO_WINDOW],
dev, res);
} else if (resource_type(res) == IORESOURCE_MEM) {
b_win = pbus_select_window(dev->bus, res);
if (!b_win)
continue;
/*
* Make sure prefetchable memory is reduced from
* the correct resource. Specifically we put 32-bit
* prefetchable memory in non-prefetchable window
* if there is a 64-bit prefetchable window.
*
* See comments in __pci_bus_size_bridges() for
* more information.
*/
if ((res->flags & IORESOURCE_PREFETCH) &&
((res->flags & IORESOURCE_MEM_64) ==
(mmio_pref->flags & IORESOURCE_MEM_64))) {
remove_dev_resource(&available[PCI_BUS_BRIDGE_PREF_MEM_WINDOW],
dev, res);
} else {
remove_dev_resource(&available[PCI_BUS_BRIDGE_MEM_WINDOW],
dev, res);
}
}
idx = pci_resource_num(dev->bus->self, b_win);
idx -= PCI_BRIDGE_RESOURCES;
remove_dev_resource(&available[idx], dev, res);
}
}