PCI: Remove pcim_request_region_exclusive()

pcim_request_region_exclusive() was only needed for redirecting the
relatively exotic exclusive request functions in pci.c in case of them
operating in managed mode.

The managed nature has been removed from those functions and no one else
uses pcim_request_region_exclusive().

Remove pcim_request_region_exclusive().

Signed-off-by: Philipp Stanner <phasta@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Link: https://lore.kernel.org/r/20250519112959.25487-5-phasta@kernel.org

Author: Philipp Stanner

drivers/pci/devres.c

@@ -852,24 +852,6 @@ int pcim_request_region(struct pci_dev *pdev, int bar, const char *name)
 }
 EXPORT_SYMBOL(pcim_request_region);
 
-/**
- * pcim_request_region_exclusive - Request a PCI BAR exclusively
- * @pdev: PCI device to request region for
- * @bar: Index of BAR to request
- * @name: Name of the driver requesting the resource
- *
- * Returns: 0 on success, a negative error code on failure.
- *
- * Request region specified by @bar exclusively.
- *
- * The region will automatically be released on driver detach. If desired,
- * release manually only with pcim_release_region().
- */
-int pcim_request_region_exclusive(struct pci_dev *pdev, int bar, const char *name)
-{
-	return _pcim_request_region(pdev, bar, name, IORESOURCE_EXCLUSIVE);
-}
-
 /**
  * pcim_release_region - Release a PCI BAR
  * @pdev: PCI device to operate on

drivers/pci/pci.h

@@ -1060,8 +1060,6 @@ static inline pci_power_t mid_pci_get_power_state(struct pci_dev *pdev)
 #endif
 
 int pcim_intx(struct pci_dev *dev, int enable);
-int pcim_request_region_exclusive(struct pci_dev *pdev, int bar,
-				  const char *name);
 
 /*
  * Config Address for PCI Configuration Mechanism #1