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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2010-09-30 05:50:17 +0400
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2010-10-13 18:49:23 +0400
commit7aed3fb73f4ac7912ce9e0c232a15ee012bf4be5 (patch)
tree3a07769d97225612892db92a8917b3460465b9f5 /drivers/input/gameport
parent05e93a746a0781429de73117b2f2ef48d2312759 (diff)
downloadlinux-7aed3fb73f4ac7912ce9e0c232a15ee012bf4be5.tar.xz
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>
Diffstat (limited to 'drivers/input/gameport')
-rw-r--r--drivers/input/gameport/emu10k1-gp.c43
1 files changed, 25 insertions, 18 deletions
diff --git a/drivers/input/gameport/emu10k1-gp.c b/drivers/input/gameport/emu10k1-gp.c
index f85620590b66..422aa0a6b77f 100644
--- a/drivers/input/gameport/emu10k1-gp.c
+++ b/drivers/input/gameport/emu10k1-gp.c
@@ -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)