GenWQE: Use pci_(request|release)_mem_regions

Now that we do have pci_request_mem_regions() and pci_release_mem_regions()
at hand, use it in the genwqe driver.

[bhelgaas: fix build issues]
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
CC: Frank Haverkamp <haver@linux.vnet.ibm.com>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/genwqe/card_base.c

@@ -182,7 +182,7 @@ static void genwqe_dev_free(struct genwqe_dev *cd)
  */
 static int genwqe_bus_reset(struct genwqe_dev *cd)
 {
-	int bars, rc = 0;
+	int rc = 0;
 	struct pci_dev *pci_dev = cd->pci_dev;
 	void __iomem *mmio;
 
@@ -193,8 +193,7 @@ static int genwqe_bus_reset(struct genwqe_dev *cd)
 	cd->mmio = NULL;
 	pci_iounmap(pci_dev, mmio);
 
-	bars = pci_select_bars(pci_dev, IORESOURCE_MEM);
-	pci_release_selected_regions(pci_dev, bars);
+	pci_release_mem_regions(pci_dev);
 
 	/*
 	 * Firmware/BIOS might change memory mapping during bus reset.
@@ -218,7 +217,7 @@ static int genwqe_bus_reset(struct genwqe_dev *cd)
 			    GENWQE_INJECT_GFIR_FATAL |
 			    GENWQE_INJECT_GFIR_INFO);
 
-	rc = pci_request_selected_regions(pci_dev, bars, genwqe_driver_name);
+	rc = pci_request_mem_regions(pci_dev, genwqe_driver_name);
 	if (rc) {
 		dev_err(&pci_dev->dev,
 			"[%s] err: request bars failed (%d)\n", __func__, rc);
@@ -1068,10 +1067,9 @@ static int genwqe_health_check_stop(struct genwqe_dev *cd)
  */
 static int genwqe_pci_setup(struct genwqe_dev *cd)
 {
-	int err, bars;
+	int err;
 	struct pci_dev *pci_dev = cd->pci_dev;
 
-	bars = pci_select_bars(pci_dev, IORESOURCE_MEM);
 	err = pci_enable_device_mem(pci_dev);
 	if (err) {
 		dev_err(&pci_dev->dev,
@@ -1080,7 +1078,7 @@ static int genwqe_pci_setup(struct genwqe_dev *cd)
 	}
 
 	/* Reserve PCI I/O and memory resources */
-	err = pci_request_selected_regions(pci_dev, bars, genwqe_driver_name);
+	err = pci_request_mem_regions(pci_dev, genwqe_driver_name);
 	if (err) {
 		dev_err(&pci_dev->dev,
 			"[%s] err: request bars failed (%d)\n", __func__, err);
@@ -1142,7 +1140,7 @@ static int genwqe_pci_setup(struct genwqe_dev *cd)
  out_iounmap:
 	pci_iounmap(pci_dev, cd->mmio);
  out_release_resources:
-	pci_release_selected_regions(pci_dev, bars);
+	pci_release_mem_regions(pci_dev);
  err_disable_device:
 	pci_disable_device(pci_dev);
  err_out:
@@ -1154,14 +1152,12 @@ static int genwqe_pci_setup(struct genwqe_dev *cd)
  */
 static void genwqe_pci_remove(struct genwqe_dev *cd)
 {
-	int bars;
 	struct pci_dev *pci_dev = cd->pci_dev;
 
 	if (cd->mmio)
 		pci_iounmap(pci_dev, cd->mmio);
 
-	bars = pci_select_bars(pci_dev, IORESOURCE_MEM);
-	pci_release_selected_regions(pci_dev, bars);
+	pci_release_mem_regions(pci_dev);
 	pci_disable_device(pci_dev);
 }