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Input: emu10k1 - do not leave device enabled when probe fails

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Rework emu_probe() to make sure we leave the device disabled if probe
fails for any reason.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov 2010-09-29 18:50:17 -07:00
parent 05e93a746a
commit 7aed3fb73f
1 changed files with 25 additions and 18 deletions
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43
drivers/input/gameport/emu10k1-gp.c
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@ -59,45 +59,52 @@ MODULE_DEVICE_TABLE(pci, emu_tbl);
static int __devinit emu_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
int ioport, iolen;
struct emu *emu;
struct gameport *port;
if (pci_enable_device(pdev))
return -EBUSY;
ioport = pci_resource_start(pdev, 0);
iolen = pci_resource_len(pdev, 0);
if (!request_region(ioport, iolen, "emu10k1-gp"))
return -EBUSY;
int error;
emu = kzalloc(sizeof(struct emu), GFP_KERNEL);
port = gameport_allocate_port();
if (!emu || !port) {
printk(KERN_ERR "emu10k1-gp: Memory allocation failed\n");
release_region(ioport, iolen);
pci_disable_device(pdev);
kfree(emu);
gameport_free_port(port);
return -ENOMEM;
error = -ENOMEM;
goto err_out_free;
}
emu->io = ioport;
emu->size = iolen;
error = pci_enable_device(pdev);
if (error)
goto err_out_free;
emu->io = pci_resource_start(pdev, 0);
emu->size = pci_resource_len(pdev, 0);
emu->dev = pdev;
emu->gameport = port;
gameport_set_name(port, "EMU10K1");
gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
port->dev.parent = &pdev->dev;
port->io = ioport;
port->io = emu->io;
if (!request_region(emu->io, emu->size, "emu10k1-gp")) {
printk(KERN_ERR "emu10k1-gp: unable to grab region 0x%x-0x%x\n",
emu->io, emu->io + emu->size - 1);
error = -EBUSY;
goto err_out_disable_dev;
}
pci_set_drvdata(pdev, emu);
gameport_register_port(port);
return 0;
err_out_disable_dev:
pci_disable_device(pdev);
err_out_free:
gameport_free_port(port);
kfree(emu);
return error;
}
static void __devexit emu_remove(struct pci_dev *pdev)