Input: emu10k1 - do not leave device enabled when probe fails
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>
diff --git a/drivers/input/gameport/emu10k1-gp.c b/drivers/input/gameport/emu10k1-gp.c
index f856205..422aa0a 100644
--- a/drivers/input/gameport/emu10k1-gp.c
+++ b/drivers/input/gameport/emu10k1-gp.c
@@ -59,45 +59,52 @@
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)