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SubjectRe: [PATCH] fsi: occ: Remove usage of the deprecated ida_simple_xx() API
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Le 20/01/2024 à 09:07, Christophe JAILLET a écrit :
> ida_alloc() and ida_free() should be preferred to the deprecated
> ida_simple_get() and ida_simple_remove().
>
> Note that the upper limit of ida_simple_get() is exclusive, but the one of
> ida_alloc_range() is inclusive. So, this upper limit, INT_MAX, should have
> been changed to INT_MAX-1.
>
> But, it is likely that the INT_MAX 'idx' is valid that the max value passed
> to ida_simple_get() should have been 0.
>
> So, allow this INT_MAX 'idx' value now.
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> The change related to the INT_MAX value is speculative.
> Review with care. (or I can re-submit with INT_MAX-1, to be safe :))
> ---

Hi,

polite reminder.

CJ



> drivers/fsi/fsi-occ.c | 17 ++++++++---------
> 1 file changed, 8 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/fsi/fsi-occ.c b/drivers/fsi/fsi-occ.c
> index da35ca9e84a6..f7157c1d77d8 100644
> --- a/drivers/fsi/fsi-occ.c
> +++ b/drivers/fsi/fsi-occ.c
> @@ -656,17 +656,16 @@ static int occ_probe(struct platform_device *pdev)
> rc = of_property_read_u32(dev->of_node, "reg", &reg);
> if (!rc) {
> /* make sure we don't have a duplicate from dts */
> - occ->idx = ida_simple_get(&occ_ida, reg, reg + 1,
> - GFP_KERNEL);
> + occ->idx = ida_alloc_range(&occ_ida, reg, reg,
> + GFP_KERNEL);
> if (occ->idx < 0)
> - occ->idx = ida_simple_get(&occ_ida, 1, INT_MAX,
> - GFP_KERNEL);
> + occ->idx = ida_alloc_min(&occ_ida, 1,
> + GFP_KERNEL);
> } else {
> - occ->idx = ida_simple_get(&occ_ida, 1, INT_MAX,
> - GFP_KERNEL);
> + occ->idx = ida_alloc_min(&occ_ida, 1, GFP_KERNEL);
> }
> } else {
> - occ->idx = ida_simple_get(&occ_ida, 1, INT_MAX, GFP_KERNEL);
> + occ->idx = ida_alloc_min(&occ_ida, 1, GFP_KERNEL);
> }
>
> platform_set_drvdata(pdev, occ);
> @@ -680,7 +679,7 @@ static int occ_probe(struct platform_device *pdev)
> rc = misc_register(&occ->mdev);
> if (rc) {
> dev_err(dev, "failed to register miscdevice: %d\n", rc);
> - ida_simple_remove(&occ_ida, occ->idx);
> + ida_free(&occ_ida, occ->idx);
> kvfree(occ->buffer);
> return rc;
> }
> @@ -719,7 +718,7 @@ static int occ_remove(struct platform_device *pdev)
> else
> device_for_each_child(&pdev->dev, NULL, occ_unregister_of_child);
>
> - ida_simple_remove(&occ_ida, occ->idx);
> + ida_free(&occ_ida, occ->idx);
>
> return 0;
> }


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