spi: stm32-ospi: Use of_reserved_mem_region_to_resource() for "memory-region"

Use the newly added of_reserved_mem_region_to_resource() function to
handle "memory-region" properties.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250709021638.2047365-1-robh@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-stm32-ospi.c b/drivers/spi/spi-stm32-ospi.c
index 2829535e5cd4f2f00bfb9cee6ebf50a45a367862..72baa402a2c3a3c994fa96f2d12e09fb9238c666 100644 (file)
--- a/drivers/spi/spi-stm32-ospi.c
+++ b/drivers/spi/spi-stm32-ospi.c
@@ -766,9 +766,7 @@ static int stm32_ospi_get_resources(struct platform_device *pdev)
 {
        struct device *dev = &pdev->dev;
        struct stm32_ospi *ospi = platform_get_drvdata(pdev);
-       struct resource *res;
-       struct reserved_mem *rmem = NULL;
-       struct device_node *node;
+       struct resource *res, _res;
        int ret;
 
        ospi->regs_base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
@@ -820,17 +818,13 @@ static int stm32_ospi_get_resources(struct platform_device *pdev)
                        goto err_dma;
        }
 
-       node = of_parse_phandle(dev->of_node, "memory-region", 0);
-       if (node)
-               rmem = of_reserved_mem_lookup(node);
-       of_node_put(node);
-
-       if (rmem) {
-               ospi->mm_size = rmem->size;
-               ospi->mm_base = devm_ioremap(dev, rmem->base, rmem->size);
+       res = &_res;
+       ret = of_reserved_mem_region_to_resource(dev->of_node, 0, res);
+       if (!ret) {
+               ospi->mm_size = resource_size(res);
+               ospi->mm_base = devm_ioremap_resource(dev, res);
                if (!ospi->mm_base) {
-                       dev_err(dev, "unable to map memory region: %pa+%pa\n",
-                               &rmem->base, &rmem->size);
+                       dev_err(dev, "unable to map memory region: %pR\n", res);
                        ret = -ENOMEM;
                        goto err_dma;
                }