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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>
120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2018, Intel Corporation
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* Copied from reset-sunxi.c
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*/
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/init.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/platform_device.h>
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#include <linux/reset-controller.h>
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#include <linux/reset/reset-simple.h>
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#include <linux/reset/socfpga.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/types.h>
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#define SOCFPGA_NR_BANKS 8
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static int a10_reset_init(struct device_node *np)
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{
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struct reset_simple_data *data;
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struct resource res;
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resource_size_t size;
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int ret;
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u32 reg_offset = 0x10;
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data = kzalloc_obj(*data);
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if (!data)
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return -ENOMEM;
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ret = of_address_to_resource(np, 0, &res);
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if (ret)
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goto err_alloc;
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size = resource_size(&res);
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if (!request_mem_region(res.start, size, np->name)) {
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ret = -EBUSY;
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goto err_alloc;
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}
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data->membase = ioremap(res.start, size);
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if (!data->membase) {
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ret = -ENOMEM;
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goto release_region;
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}
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if (of_property_read_u32(np, "altr,modrst-offset", ®_offset))
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pr_warn("missing altr,modrst-offset property, assuming 0x10\n");
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data->membase += reg_offset;
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spin_lock_init(&data->lock);
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data->rcdev.owner = THIS_MODULE;
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data->rcdev.nr_resets = SOCFPGA_NR_BANKS * 32;
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data->rcdev.ops = &reset_simple_ops;
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data->rcdev.of_node = np;
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data->status_active_low = true;
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ret = reset_controller_register(&data->rcdev);
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if (ret)
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pr_err("unable to register device\n");
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return ret;
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release_region:
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release_mem_region(res.start, size);
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err_alloc:
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kfree(data);
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return ret;
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};
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/*
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* These are the reset controller we need to initialize early on in
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* our system, before we can even think of using a regular device
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* driver for it.
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* The controllers that we can register through the regular device
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* model are handled by the simple reset driver directly.
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*/
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static const struct of_device_id socfpga_early_reset_dt_ids[] __initconst = {
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{ .compatible = "altr,rst-mgr", },
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{ /* sentinel */ },
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};
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void __init socfpga_reset_init(void)
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{
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struct device_node *np;
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for_each_matching_node(np, socfpga_early_reset_dt_ids)
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a10_reset_init(np);
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}
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/*
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* The early driver is problematic, because it doesn't register
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* itself as a driver. This causes certain device links to prevent
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* consumer devices from probing. The hacky solution is to register
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* an empty driver, whose only job is to attach itself to the reset
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* manager and call probe.
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*/
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static const struct of_device_id socfpga_reset_dt_ids[] = {
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{ .compatible = "altr,rst-mgr", },
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{ /* sentinel */ },
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};
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static int reset_simple_probe(struct platform_device *pdev)
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{
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return 0;
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}
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static struct platform_driver reset_socfpga_driver = {
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.probe = reset_simple_probe,
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.driver = {
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.name = "socfpga-reset",
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.of_match_table = socfpga_reset_dt_ids,
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},
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};
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builtin_platform_driver(reset_socfpga_driver);
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