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5bbcece640
It is preferred to use sizeof(*pointer) instead of sizeof(type) due to the type of the variable can change and one needs not change the former (unlike the latter). This patch has no effect on runtime behavior. Signed-off-by: Erick Archer <erick.archer@outlook.com> Link: https://lore.kernel.org/r/PAXPR02MB72483F512F863C74A4AECA2B8BFB2@PAXPR02MB7248.eurprd02.prod.outlook.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
109 lines
2.3 KiB
C
109 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2001 Vojtech Pavlik
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*/
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/*
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* EMU10k1 - SB Live / Audigy - gameport driver for Linux
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*/
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#include <asm/io.h>
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#include <linux/module.h>
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#include <linux/ioport.h>
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#include <linux/gameport.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
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MODULE_DESCRIPTION("EMU10k1 gameport driver");
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MODULE_LICENSE("GPL");
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struct emu {
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struct pci_dev *dev;
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struct gameport *gameport;
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int io;
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int size;
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};
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static const struct pci_device_id emu_tbl[] = {
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{ 0x1102, 0x7002, PCI_ANY_ID, PCI_ANY_ID }, /* SB Live gameport */
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{ 0x1102, 0x7003, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy gameport */
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{ 0x1102, 0x7004, PCI_ANY_ID, PCI_ANY_ID }, /* Dell SB Live */
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{ 0x1102, 0x7005, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy LS gameport */
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{ 0, }
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};
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MODULE_DEVICE_TABLE(pci, emu_tbl);
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static int emu_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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struct emu *emu;
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struct gameport *port;
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int error;
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emu = kzalloc(sizeof(*emu), GFP_KERNEL);
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port = gameport_allocate_port();
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if (!emu || !port) {
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printk(KERN_ERR "emu10k1-gp: Memory allocation failed\n");
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error = -ENOMEM;
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goto err_out_free;
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}
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error = pci_enable_device(pdev);
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if (error)
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goto err_out_free;
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emu->io = pci_resource_start(pdev, 0);
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emu->size = pci_resource_len(pdev, 0);
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emu->dev = pdev;
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emu->gameport = port;
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gameport_set_name(port, "EMU10K1");
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gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
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port->dev.parent = &pdev->dev;
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port->io = emu->io;
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if (!request_region(emu->io, emu->size, "emu10k1-gp")) {
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printk(KERN_ERR "emu10k1-gp: unable to grab region 0x%x-0x%x\n",
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emu->io, emu->io + emu->size - 1);
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error = -EBUSY;
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goto err_out_disable_dev;
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}
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pci_set_drvdata(pdev, emu);
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gameport_register_port(port);
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return 0;
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err_out_disable_dev:
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pci_disable_device(pdev);
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err_out_free:
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gameport_free_port(port);
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kfree(emu);
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return error;
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}
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static void emu_remove(struct pci_dev *pdev)
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{
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struct emu *emu = pci_get_drvdata(pdev);
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gameport_unregister_port(emu->gameport);
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release_region(emu->io, emu->size);
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kfree(emu);
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pci_disable_device(pdev);
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}
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static struct pci_driver emu_driver = {
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.name = "Emu10k1_gameport",
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.id_table = emu_tbl,
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.probe = emu_probe,
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.remove = emu_remove,
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};
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module_pci_driver(emu_driver);
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