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[PATCH] Char: isicom, expand function
Simple functions (those, that calls reuest_irq, request_region et al) may be expanded directly in code. It makes probe function more readable and transparent. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jiri Slaby
Linus Torvalds
parent
592ee3a5e5
commit
09a4a11255
@ -1520,37 +1520,6 @@ static void isicom_flush_buffer(struct tty_struct *tty)
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* Driver init and deinit functions
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*/
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static int __devinit isicom_register_ioregion(struct pci_dev *pdev,
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const unsigned int index)
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{
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struct isi_board *board = pci_get_drvdata(pdev);
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if (!board->base)
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return -EINVAL;
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if (!request_region(board->base, 16, ISICOM_NAME)) {
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dev_dbg(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
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"will be disabled.\n", board->base, board->base + 15,
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index + 1);
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return -EBUSY;
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}
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return 0;
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}
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static void isicom_unregister_ioregion(struct pci_dev *pdev)
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{
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struct isi_board *board = pci_get_drvdata(pdev);
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if (!board->base)
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return;
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release_region(board->base, 16);
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dev_dbg(&pdev->dev, "I/O Region 0x%lx-0x%lx released.\n",
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board->base, board->base + 15);
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board->base = 0;
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}
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static const struct tty_operations isicom_ops = {
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.open = isicom_open,
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.close = isicom_close,
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@ -1571,70 +1540,6 @@ static const struct tty_operations isicom_ops = {
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.tiocmset = isicom_tiocmset,
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};
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static int __devinit isicom_register_tty_driver(void)
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{
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int error = -ENOMEM;
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/* tty driver structure initialization */
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isicom_normal = alloc_tty_driver(PORT_COUNT);
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if (!isicom_normal)
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goto end;
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isicom_normal->owner = THIS_MODULE;
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isicom_normal->name = "ttyM";
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isicom_normal->major = ISICOM_NMAJOR;
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isicom_normal->minor_start = 0;
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isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
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isicom_normal->subtype = SERIAL_TYPE_NORMAL;
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isicom_normal->init_termios = tty_std_termios;
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isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
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CLOCAL;
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isicom_normal->flags = TTY_DRIVER_REAL_RAW;
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tty_set_operations(isicom_normal, &isicom_ops);
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if ((error = tty_register_driver(isicom_normal))) {
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pr_dbg("Couldn't register the dialin driver, error=%d\n",
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error);
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put_tty_driver(isicom_normal);
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}
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end:
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return error;
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}
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static void isicom_unregister_tty_driver(void)
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{
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int error;
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if ((error = tty_unregister_driver(isicom_normal)))
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pr_dbg("couldn't unregister normal driver, error=%d.\n", error);
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put_tty_driver(isicom_normal);
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}
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static int __devinit isicom_register_isr(struct pci_dev *pdev,
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const unsigned int index)
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{
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struct isi_board *board = pci_get_drvdata(pdev);
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unsigned long irqflags = IRQF_DISABLED;
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int retval = -EINVAL;
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if (!board->base)
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goto end;
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if (board->isa == NO)
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irqflags |= IRQF_SHARED;
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retval = request_irq(board->irq, isicom_interrupt, irqflags,
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ISICOM_NAME, board);
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if (retval < 0)
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dev_warn(&pdev->dev, "Could not install handler at Irq %d. "
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"Card%d will be disabled.\n", board->irq, index + 1);
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else
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retval = 0;
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end:
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return retval;
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}
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static int __devinit reset_card(struct pci_dev *pdev,
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const unsigned int card, unsigned int *signature)
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{
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@ -1913,13 +1818,21 @@ static int __devinit isicom_probe(struct pci_dev *pdev,
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pci_set_drvdata(pdev, board);
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retval = isicom_register_ioregion(pdev, index);
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if (retval < 0)
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if (!request_region(board->base, 16, ISICOM_NAME)) {
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dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
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"will be disabled.\n", board->base, board->base + 15,
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index + 1);
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retval = -EBUSY;
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goto err;
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}
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retval = isicom_register_isr(pdev, index);
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if (retval < 0)
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retval = request_irq(board->irq, isicom_interrupt,
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IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board);
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if (retval < 0) {
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dev_err(&pdev->dev, "Could not install handler at Irq %d. "
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"Card%d will be disabled.\n", board->irq, index + 1);
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goto errunrr;
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}
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retval = reset_card(pdev, index, &signature);
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if (retval < 0)
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@ -1934,7 +1847,7 @@ static int __devinit isicom_probe(struct pci_dev *pdev,
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errunri:
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free_irq(board->irq, board);
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errunrr:
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isicom_unregister_ioregion(pdev);
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release_region(board->base, 16);
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err:
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board->base = 0;
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return retval;
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@ -1945,7 +1858,7 @@ static void __devexit isicom_remove(struct pci_dev *pdev)
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struct isi_board *board = pci_get_drvdata(pdev);
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free_irq(board->irq, board);
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isicom_unregister_ioregion(pdev);
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release_region(board->base, 16);
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}
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static int __devinit isicom_setup(void)
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@ -1991,14 +1904,35 @@ static int __devinit isicom_setup(void)
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"Disabling Card%d...\n", irq[idx], idx + 1);
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}
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retval = isicom_register_tty_driver();
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if (retval < 0)
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/* tty driver structure initialization */
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isicom_normal = alloc_tty_driver(PORT_COUNT);
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if (!isicom_normal) {
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retval = -ENOMEM;
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goto error;
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}
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isicom_normal->owner = THIS_MODULE;
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isicom_normal->name = "ttyM";
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isicom_normal->major = ISICOM_NMAJOR;
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isicom_normal->minor_start = 0;
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isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
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isicom_normal->subtype = SERIAL_TYPE_NORMAL;
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isicom_normal->init_termios = tty_std_termios;
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isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
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CLOCAL;
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isicom_normal->flags = TTY_DRIVER_REAL_RAW;
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tty_set_operations(isicom_normal, &isicom_ops);
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retval = tty_register_driver(isicom_normal);
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if (retval) {
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pr_dbg("Couldn't register the dialin driver\n");
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goto err_puttty;
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}
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retval = pci_register_driver(&isicom_driver);
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if (retval < 0) {
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printk(KERN_ERR "ISICOM: Unable to register pci driver.\n");
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goto errtty;
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goto err_unrtty;
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}
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init_timer(&tx);
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@ -2009,8 +1943,10 @@ static int __devinit isicom_setup(void)
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add_timer(&tx);
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return 0;
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errtty:
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isicom_unregister_tty_driver();
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err_unrtty:
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tty_unregister_driver(isicom_normal);
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err_puttty:
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put_tty_driver(isicom_normal);
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error:
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return retval;
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}
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@ -2025,7 +1961,8 @@ static void __exit isicom_exit(void)
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msleep(10);
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pci_unregister_driver(&isicom_driver);
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isicom_unregister_tty_driver();
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tty_unregister_driver(isicom_normal);
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put_tty_driver(isicom_normal);
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}
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module_init(isicom_setup);
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