[PATCH v3] soc: ti: Convert allocations to devm

From: Nicolas Frayer
Date: Fri Oct 28 2022 - 14:00:57 EST


Changed the memory and resource allocations in the probe function
to devm. Also added a remove callback.

Signed-off-by: Nicolas Frayer <nfrayer@xxxxxxxxxxxx>
---

v2->v3:
dropped module conversion part of this series while other driver dependencies
on socinfo are worked out.
A dependency issue is introduced by changing subsys_initcall()
to module_platform_driver(). Some drivers using the socinfo information probe
before the socinfo driver itself and it makes their probe fail.

Dropped series:
https://lore.kernel.org/all/20221010131538.7333-1-nfrayer@xxxxxxxxxxxx/

drivers/soc/ti/k3-socinfo.c | 36 +++++++++++++++++++-----------------
1 file changed, 19 insertions(+), 17 deletions(-)

diff --git a/drivers/soc/ti/k3-socinfo.c b/drivers/soc/ti/k3-socinfo.c
index 91f441ee6175..19f3e74f5376 100644
--- a/drivers/soc/ti/k3-socinfo.c
+++ b/drivers/soc/ti/k3-socinfo.c
@@ -96,21 +96,18 @@ static int k3_chipinfo_probe(struct platform_device *pdev)
partno_id = (jtag_id & CTRLMMR_WKUP_JTAGID_PARTNO_MASK) >>
CTRLMMR_WKUP_JTAGID_PARTNO_SHIFT;

- soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+ soc_dev_attr = devm_kzalloc(&pdev->dev, sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
return -ENOMEM;

- soc_dev_attr->revision = kasprintf(GFP_KERNEL, "SR%x.0", variant);
- if (!soc_dev_attr->revision) {
- ret = -ENOMEM;
- goto err;
- }
+ soc_dev_attr->revision = devm_kasprintf(&pdev->dev, GFP_KERNEL, "SR%x.0", variant);
+ if (!soc_dev_attr->revision)
+ return -ENOMEM;

ret = k3_chipinfo_partno_to_names(partno_id, soc_dev_attr);
if (ret) {
dev_err(dev, "Unknown SoC JTAGID[0x%08X]\n", jtag_id);
- ret = -ENODEV;
- goto err_free_rev;
+ return -ENODEV;
}

node = of_find_node_by_path("/");
@@ -118,22 +115,26 @@ static int k3_chipinfo_probe(struct platform_device *pdev)
of_node_put(node);

soc_dev = soc_device_register(soc_dev_attr);
- if (IS_ERR(soc_dev)) {
- ret = PTR_ERR(soc_dev);
- goto err_free_rev;
- }
+ if (IS_ERR(soc_dev))
+ return PTR_ERR(soc_dev);
+
+ platform_set_drvdata(pdev, soc_dev);

dev_info(dev, "Family:%s rev:%s JTAGID[0x%08x] Detected\n",
soc_dev_attr->family,
soc_dev_attr->revision, jtag_id);

return 0;
+}
+
+static int k3_chipinfo_remove(struct platform_device *pdev)
+{
+ struct soc_device *soc_dev = platform_get_drvdata(pdev);

-err_free_rev:
- kfree(soc_dev_attr->revision);
-err:
- kfree(soc_dev_attr);
- return ret;
+ if (soc_dev)
+ soc_device_unregister(soc_dev);
+
+ return 0;
}

static const struct of_device_id k3_chipinfo_of_match[] = {
@@ -147,6 +148,7 @@ static struct platform_driver k3_chipinfo_driver = {
.of_match_table = k3_chipinfo_of_match,
},
.probe = k3_chipinfo_probe,
+ .remove = k3_chipinfo_remove,
};

static int __init k3_chipinfo_init(void)
--
2.25.1