pwm: Replace deprecated PCI functions

pcim_iomap_table() and pcim_request_regions() have been deprecated in
commit e354bb8 ("PCI: Deprecate pcim_iomap_table(),
pcim_iomap_regions_request_all()") and commit d140f80 ("PCI:
Deprecate pcim_iomap_regions() in favor of pcim_iomap_region()").

Replace these functions with pcim_iomap_region().

Additionally, pass the actual driver names to pcim_iomap_region()
instead of the previous pci_name(), since the 'name' parameter should
always reflect which driver owns a region.

Signed-off-by: Philipp Stanner <pstanner@redhat.com>
Link: https://lore.kernel.org/r/20241111090944.11293-2-pstanner@redhat.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>

drivers/pwm/pwm-dwc.c

@@ -66,20 +66,16 @@ static int dwc_pwm_probe(struct pci_dev *pci, const struct pci_device_id *id)
 
 	pci_set_master(pci);
 
-	ret = pcim_iomap_regions(pci, BIT(0), pci_name(pci));
-	if (ret)
-		return dev_err_probe(dev, ret, "Failed to iomap PCI BAR\n");
-
 	info = (const struct dwc_pwm_info *)id->driver_data;
 	ddata = devm_kzalloc(dev, struct_size(ddata, chips, info->nr), GFP_KERNEL);
 	if (!ddata)
 		return -ENOMEM;
 
-	/*
-	 * No need to check for pcim_iomap_table() failure,
-	 * pcim_iomap_regions() already does it for us.
-	 */
-	ddata->io_base = pcim_iomap_table(pci)[0];
+	ddata->io_base = pcim_iomap_region(pci, 0, "pwm-dwc");
+	if (IS_ERR(ddata->io_base))
+		return dev_err_probe(dev, PTR_ERR(ddata->io_base),
+				     "Failed to request / iomap PCI BAR\n");
+
 	ddata->info = info;
 
 	for (idx = 0; idx < ddata->info->nr; idx++) {

drivers/pwm/pwm-lpss-pci.c

@@ -18,19 +18,20 @@ static int pwm_lpss_probe_pci(struct pci_dev *pdev,
 			      const struct pci_device_id *id)
 {
 	const struct pwm_lpss_boardinfo *info;
+	void __iomem *io_base;
 	struct pwm_chip *chip;
 	int err;
 
 	err = pcim_enable_device(pdev);
 	if (err < 0)
 		return err;
 
-	err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
-	if (err)
-		return err;
+	io_base = pcim_iomap_region(pdev, 0, "pwm-lpss");
+	if (IS_ERR(io_base))
+		return PTR_ERR(io_base);
 
 	info = (struct pwm_lpss_boardinfo *)id->driver_data;
-	chip = devm_pwm_lpss_probe(&pdev->dev, pcim_iomap_table(pdev)[0], info);
+	chip = devm_pwm_lpss_probe(&pdev->dev, io_base, info);
 	if (IS_ERR(chip))
 		return PTR_ERR(chip);