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Date: Thu, 03 Mar 2016 10:54:07 -0600 From: Bjorn Helgaas <bhelgaas@...gle.com> To: linux-pci@...r.kernel.org Cc: Matthew Garrett <mjg59@...f.ucam.org>, Tony Luck <tony.luck@...el.com>, DRI <dri-devel@...ts.freedesktop.org>, Fenghua Yu <fenghua.yu@...el.com>, Intel Graphics Development <intel-gfx@...ts.freedesktop.org>, linux-kernel@...r.kernel.org, Ralf Baechle <ralf@...ux-mips.org>, Andy Lutomirski <luto@...capital.net>, Bruno Prémont <bonbons@...ux-vserver.org>, Daniel Stone <daniel@...ishbar.org>, Alex Deucher <alexdeucher@...il.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Ville Syrjälä <ville.syrjala@...ux.intel.com> Subject: [PATCH v1 02/12] PCI: Don't assign or reassign immutable resources IORESOURCE_PCI_FIXED means the resource can't be moved, so if it's set, don't bother trying to assign or reassign the resource. Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com> --- drivers/pci/setup-res.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c index 604011e..66c4d8f 100644 --- a/drivers/pci/setup-res.c +++ b/drivers/pci/setup-res.c @@ -276,6 +276,9 @@ int pci_assign_resource(struct pci_dev *dev, int resno) resource_size_t align, size; int ret; + if (res->flags & IORESOURCE_PCI_FIXED) + return 0; + res->flags |= IORESOURCE_UNSET; align = pci_resource_alignment(dev, res); if (!align) { @@ -321,6 +324,9 @@ int pci_reassign_resource(struct pci_dev *dev, int resno, resource_size_t addsiz resource_size_t new_size; int ret; + if (res->flags & IORESOURCE_PCI_FIXED) + return 0; + flags = res->flags; res->flags |= IORESOURCE_UNSET; if (!res->parent) {
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