misc: cardreader: Use non-hybrid PCI devres API

cardreader enables its PCI device with pcim_enable_device(). This,
implicitly, switches the function pci_request_regions() into managed
mode, where it becomes a devres function.

The PCI subsystem wants to remove this hybrid nature from its
interfaces. To do so, users of the aforementioned combination of
functions must be ported to non-hybrid functions.

Moreover, since both functions are already managed in this driver, the
calls to pci_release_regions() are unnecessary.

Remove the calls to pci_release_regions().

Replace the call to sometimes-managed pci_request_regions() with one to
the always-managed pcim_request_all_regions().

Signed-off-by: Philipp Stanner <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/misc/cardreader/alcor_pci.c

···
 	priv->cfg = cfg;
 	priv->irq = pdev->irq;
 
-	ret = pci_request_regions(pdev, DRV_NAME_ALCOR_PCI);
+	ret = pcim_request_all_regions(pdev, DRV_NAME_ALCOR_PCI);
 	if (ret) {
 		dev_err(&pdev->dev, "Cannot request region\n");
 		ret = -ENOMEM;
···
 	if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
 		dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
 		ret = -ENODEV;
-		goto error_release_regions;
+		goto error_free_ida;
 	}
 
 	priv->iobase = pcim_iomap(pdev, bar, 0);
 	if (!priv->iobase) {
 		ret = -ENOMEM;
-		goto error_release_regions;
+		goto error_free_ida;
 	}
 
 	/* make sure irqs are disabled */
···
 	ret = dma_set_mask_and_coherent(priv->dev, AU6601_SDMA_MASK);
 	if (ret) {
 		dev_err(priv->dev, "Failed to set DMA mask\n");
-		goto error_release_regions;
+		goto error_free_ida;
 	}
 
 	pci_set_master(pdev);
···
 error_clear_drvdata:
 	pci_clear_master(pdev);
 	pci_set_drvdata(pdev, NULL);
-error_release_regions:
-	pci_release_regions(pdev);
 error_free_ida:
 	ida_free(&alcor_pci_idr, priv->id);
 	return ret;
···
 
 	ida_free(&alcor_pci_idr, priv->id);
 
-	pci_release_regions(pdev);
 	pci_clear_master(pdev);
 	pci_set_drvdata(pdev, NULL);
 }