[PATCH] platform_device: switch to simpler IDA interface

[PATCH] platform_device: switch to simpler IDA interface

[Bartosz Golaszewski]

From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

We don't need to specify any ranges when allocating IDs so we can switch
to ida_alloc() and ida_free() instead of the ida_simple_ counterparts.

ida_simple_get(ida, 0, 0, gfp) is equivalent to
ida_alloc_range(ida, 0, UINT_MAX, gfp) which is equivalent to
ida_alloc(ida, gfp). Note: IDR will never actually allocate an ID
larger than INT_MAX.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 drivers/base/platform.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index e5d8a0503b4f..194c36e3f37c 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -559,7 +559,7 @@ int platform_device_add(struct platform_device *pdev)
 		 * that we remember it must be freed, and we append a suffix
 		 * to avoid namespace collision with explicit IDs.
 		 */
-		ret = ida_simple_get(&platform_devid_ida, 0, 0, GFP_KERNEL);
+		ret = ida_alloc(&platform_devid_ida, GFP_KERNEL);
 		if (ret < 0)
 			goto err_out;
 		pdev->id = ret;
@@ -600,7 +600,7 @@ int platform_device_add(struct platform_device *pdev)
 
  failed:
 	if (pdev->id_auto) {
-		ida_simple_remove(&platform_devid_ida, pdev->id);
+		ida_free(&platform_devid_ida, pdev->id);
 		pdev->id = PLATFORM_DEVID_AUTO;
 	}
 
@@ -631,7 +631,7 @@ void platform_device_del(struct platform_device *pdev)
 		device_del(&pdev->dev);
 
 		if (pdev->id_auto) {
-			ida_simple_remove(&platform_devid_ida, pdev->id);
+			ida_free(&platform_devid_ida, pdev->id);
 			pdev->id = PLATFORM_DEVID_AUTO;
 		}
 
-- 
2.26.1