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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
114 lines
2.7 KiB
C
114 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#define pr_fmt(fmt) "of_pmem: " fmt
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#include <linux/of.h>
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#include <linux/libnvdimm.h>
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#include <linux/module.h>
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#include <linux/ioport.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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struct of_pmem_private {
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struct nvdimm_bus_descriptor bus_desc;
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struct nvdimm_bus *bus;
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};
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static int of_pmem_region_probe(struct platform_device *pdev)
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{
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struct of_pmem_private *priv;
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struct device_node *np;
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struct nvdimm_bus *bus;
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bool is_volatile;
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int i;
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np = dev_of_node(&pdev->dev);
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if (!np)
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return -ENXIO;
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priv = kzalloc_obj(*priv);
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if (!priv)
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return -ENOMEM;
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priv->bus_desc.provider_name = devm_kstrdup(&pdev->dev, pdev->name,
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GFP_KERNEL);
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if (!priv->bus_desc.provider_name) {
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kfree(priv);
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return -ENOMEM;
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}
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priv->bus_desc.module = THIS_MODULE;
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priv->bus_desc.of_node = np;
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priv->bus = bus = nvdimm_bus_register(&pdev->dev, &priv->bus_desc);
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if (!bus) {
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kfree(priv);
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return -ENODEV;
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}
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platform_set_drvdata(pdev, priv);
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is_volatile = of_property_read_bool(np, "volatile");
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dev_dbg(&pdev->dev, "Registering %s regions from %pOF\n",
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is_volatile ? "volatile" : "non-volatile", np);
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for (i = 0; i < pdev->num_resources; i++) {
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struct nd_region_desc ndr_desc;
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struct nd_region *region;
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/*
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* NB: libnvdimm copies the data from ndr_desc into it's own
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* structures so passing a stack pointer is fine.
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*/
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memset(&ndr_desc, 0, sizeof(ndr_desc));
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ndr_desc.numa_node = dev_to_node(&pdev->dev);
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ndr_desc.target_node = ndr_desc.numa_node;
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ndr_desc.res = &pdev->resource[i];
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ndr_desc.of_node = np;
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set_bit(ND_REGION_PAGEMAP, &ndr_desc.flags);
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if (is_volatile)
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region = nvdimm_volatile_region_create(bus, &ndr_desc);
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else {
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set_bit(ND_REGION_PERSIST_MEMCTRL, &ndr_desc.flags);
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region = nvdimm_pmem_region_create(bus, &ndr_desc);
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}
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if (!region)
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dev_warn(&pdev->dev, "Unable to register region %pR from %pOF\n",
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ndr_desc.res, np);
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else
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dev_dbg(&pdev->dev, "Registered region %pR from %pOF\n",
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ndr_desc.res, np);
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}
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return 0;
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}
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static void of_pmem_region_remove(struct platform_device *pdev)
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{
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struct of_pmem_private *priv = platform_get_drvdata(pdev);
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nvdimm_bus_unregister(priv->bus);
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kfree(priv);
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}
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static const struct of_device_id of_pmem_region_match[] = {
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{ .compatible = "pmem-region" },
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{ .compatible = "pmem-region-v2" },
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{ },
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};
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static struct platform_driver of_pmem_region_driver = {
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.probe = of_pmem_region_probe,
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.remove = of_pmem_region_remove,
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.driver = {
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.name = "of_pmem",
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.of_match_table = of_pmem_region_match,
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},
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};
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module_platform_driver(of_pmem_region_driver);
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MODULE_DEVICE_TABLE(of, of_pmem_region_match);
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MODULE_DESCRIPTION("NVDIMM Device Tree support");
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("IBM Corporation");
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