pcim_iomap_regions() is a complicated function that uses a bit mask to
determine the BARs the user wishes to request and ioremap. Almost all
users only ever set a single bit in that mask, making that mechanism
questionable.
pcim_iomap_region() is now available as a more simple replacement.
Make pcim_iomap_region() a public function.
Mark pcim_iomap_regions() as deprecated.
Signed-off-by: Philipp Stanner <pstanner@xxxxxxxxxx>
---
drivers/pci/devres.c | 8 ++++++--
include/linux/pci.h | 2 ++
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/devres.c b/drivers/pci/devres.c
index 3780a9f9ec00..89ec26ea1501 100644
--- a/drivers/pci/devres.c
+++ b/drivers/pci/devres.c
@@ -728,7 +728,7 @@ EXPORT_SYMBOL(pcim_iounmap);
* Mapping and region will get automatically released on driver detach. If
* desired, release manually only with pcim_iounmap_region().
*/
-static void __iomem *pcim_iomap_region(struct pci_dev *pdev, int bar,
+void __iomem *pcim_iomap_region(struct pci_dev *pdev, int bar,
const char *name)
{
int ret;
@@ -761,6 +761,7 @@ static void __iomem *pcim_iomap_region(struct pci_dev *pdev, int bar,
return IOMEM_ERR_PTR(ret);
}
+EXPORT_SYMBOL(pcim_iomap_region);
/**
* pcim_iounmap_region - Unmap and release a PCI BAR
@@ -783,7 +784,7 @@ static void pcim_iounmap_region(struct pci_dev *pdev, int bar)
}
/**
- * pcim_iomap_regions - Request and iomap PCI BARs
+ * pcim_iomap_regions - Request and iomap PCI BARs (DEPRECATED)
* @pdev: PCI device to map IO resources for
* @mask: Mask of BARs to request and iomap
* @name: Name associated with the requests
@@ -791,6 +792,9 @@ static void pcim_iounmap_region(struct pci_dev *pdev, int bar)
* Returns: 0 on success, negative error code on failure.
*
* Request and iomap regions specified by @mask.
+ *
+ * This function is DEPRECATED. Do not use it in new code.
+ * Use pcim_iomap_region() instead.
*/
int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name)
{
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 4cf89a4b4cbc..fc30176d28ca 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -2292,6 +2292,8 @@ static inline void pci_fixup_device(enum pci_fixup_pass pass,
void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
void __iomem * const *pcim_iomap_table(struct pci_dev *pdev);
+void __iomem *pcim_iomap_region(struct pci_dev *pdev, int bar,
+ const char *name);
int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name);
int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask,
const char *name);
--
2.45.2
