Get the compiler to verify the argument type of struct pci_dev *.
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
---
Another possible improvement is to range check index.
include/linux/pci.h | 36 ++++++++++++++++++++++++++----------
1 files changed, 26 insertions(+), 10 deletions(-)
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 5faa831..971d0e9 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1396,16 +1396,32 @@ static inline struct pci_dev *pci_dev_get(struct pci_dev *dev)
/* these helpers provide future and backwards compatibility
* for accessing popular PCI BAR info */
-#define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start)
-#define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end)
-#define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags)
-#define pci_resource_len(dev,bar) \
- ((pci_resource_start((dev), (bar)) == 0 && \
- pci_resource_end((dev), (bar)) == \
- pci_resource_start((dev), (bar))) ? 0 : \
- \
- (pci_resource_end((dev), (bar)) - \
- pci_resource_start((dev), (bar)) + 1))
+static inline resource_size_t
+pci_resource_start(const struct pci_dev *dev, int index)
+{
+ return dev->resource[index].start;
+}
+
+static inline resource_size_t
+pci_resource_end(const struct pci_dev *dev, int index)
+{
+ return dev->resource[index].end;
+}
+
+static inline unsigned long
+pci_resource_flags(const struct pci_dev *dev, int index)
+{
+ return dev->resource[index].flags;
+}
+
+static inline resource_size_t
+pci_resource_len(const struct pci_dev *dev, int index)
+{
+ if (pci_resource_start(dev, index) == 0 &&
+ pci_resource_end(dev, index) == 0)
+ return 0;
+ return resource_size(&dev->resource[index]);
+}
/* Similar to the helpers above, these manipulate per-pci_dev
* driver-specific data. They are really just a wrapper around
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