This is intended for devices which are known to work with BAR sizes other
than those which they advertise; usually larger.
---
drivers/pci/setup-res.c | 4 ++--
include/linux/pci.h | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 43eda101fcf4..3651754de433 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -407,7 +407,7 @@ void pci_release_resource(struct pci_dev *dev, int resno)
}
EXPORT_SYMBOL(pci_release_resource);
-int pci_resize_resource(struct pci_dev *dev, int resno, int size)
+int pci_resize_resource(struct pci_dev *dev, int resno, int size, bool forced)
{
struct resource *res = dev->resource + resno;
int old, ret;
@@ -426,7 +426,7 @@ int pci_resize_resource(struct pci_dev *dev, int resno, int
size)
if (!sizes)
return -ENOTSUPP;
- if (!(sizes & BIT(size)))
+ if (!forced && !(sizes & BIT(size)))
return -EINVAL;
old = pci_rebar_get_current_size(dev, resno);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 5eee18969fe8..f33494d92512 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1238,7 +1238,7 @@ static __always_inline u64 pci_rebar_size_to_bytes(int
size)
}
u32 pci_rebar_get_possible_sizes(struct pci_dev *pdev, int bar);
int pci_rebar_get_current_size(struct pci_dev *pdev, int bar);
-int __must_check pci_resize_resource(struct pci_dev *dev, int i, int size);
+int __must_check pci_resize_resource(struct pci_dev *dev, int i, int size,
bool forced);
int pci_select_bars(struct pci_dev *dev, unsigned long flags);
bool pci_device_is_present(struct pci_dev *pdev);
--
2.20.1
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