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platform_device: switch to simpler IDA interface 

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>
Link: https://lore.kernel.org/r/20200909180248.10093-1-brgl@bgdev.pl
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bartosz Golaszewski 2020-09-09 20:02:48 +02:00 committed by Greg Kroah-Hartman
parent 0c7a6b91d2
commit 0de7511695
1 changed files with 3 additions and 3 deletions
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6
drivers/base/platform.c
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@ -573,7 +573,7 @@ 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;
@ -614,7 +614,7 @@ 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;
}
@ -645,7 +645,7 @@ 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;
}