cxl: Remove cxl_get_phys_dev() kernel API

The cxl_get_phys_dev() API returns a struct device pointer which could
belong to either a struct pci_dev (bare-metal) or platform_device
(powerVM). To avoid potential problems in drivers, remove that API. It
was introduced to allow drivers to read the VPD of the adapter, but
the cxl driver now provides the cxl_pci_read_adapter_vpd() API for
that purpose.

Co-authored-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

drivers/misc/cxl/api.c

@@ -76,7 +76,6 @@ struct device *cxl_get_phys_dev(struct pci_dev *dev)
 
 	return afu->adapter->dev.parent;
 }
-EXPORT_SYMBOL_GPL(cxl_get_phys_dev);
 
 int cxl_release_context(struct cxl_context *ctx)
 {

include/misc/cxl.h

@@ -30,9 +30,6 @@ struct cxl_afu *cxl_pci_to_afu(struct pci_dev *dev);
 /* Get the AFU conf record number associated with a pci_dev */
 unsigned int cxl_pci_to_cfg_record(struct pci_dev *dev);
 
-/* Get the physical device (ie. the PCIe card) which the AFU is attached */
-struct device *cxl_get_phys_dev(struct pci_dev *dev);
-
 
 /*
  * Context lifetime overview: