diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-sis5595.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-sis5595.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c index a6feed449dbe..283769cecee2 100644 --- a/drivers/i2c/busses/i2c-sis5595.c +++ b/drivers/i2c/busses/i2c-sis5595.c @@ -129,6 +129,7 @@ MODULE_PARM_DESC(force_addr, "Initialize the base address of the i2c controller" static struct pci_driver sis5595_driver; static unsigned short sis5595_base; +static struct pci_dev *sis5595_pdev; static u8 sis5595_read(u8 reg) { @@ -379,6 +380,8 @@ MODULE_DEVICE_TABLE (pci, sis5595_ids); static int __devinit sis5595_probe(struct pci_dev *dev, const struct pci_device_id *id) { + int err; + if (sis5595_setup(dev)) { dev_err(&dev->dev, "SIS5595 not detected, module not inserted.\n"); return -ENODEV; @@ -389,20 +392,24 @@ static int __devinit sis5595_probe(struct pci_dev *dev, const struct pci_device_ sprintf(sis5595_adapter.name, "SMBus SIS5595 adapter at %04x", sis5595_base + SMB_INDEX); - return i2c_add_adapter(&sis5595_adapter); -} + err = i2c_add_adapter(&sis5595_adapter); + if (err) { + release_region(sis5595_base + SMB_INDEX, 2); + return err; + } -static void __devexit sis5595_remove(struct pci_dev *dev) -{ - i2c_del_adapter(&sis5595_adapter); - release_region(sis5595_base + SMB_INDEX, 2); + /* Always return failure here. This is to allow other drivers to bind + * to this pci device. We don't really want to have control over the + * pci device, we only wanted to read as few register values from it. + */ + sis5595_pdev = pci_dev_get(dev); + return -ENODEV; } static struct pci_driver sis5595_driver = { .name = "sis5595_smbus", .id_table = sis5595_ids, .probe = sis5595_probe, - .remove = __devexit_p(sis5595_remove), }; static int __init i2c_sis5595_init(void) @@ -413,6 +420,12 @@ static int __init i2c_sis5595_init(void) static void __exit i2c_sis5595_exit(void) { pci_unregister_driver(&sis5595_driver); + if (sis5595_pdev) { + i2c_del_adapter(&sis5595_adapter); + release_region(sis5595_base + SMB_INDEX, 2); + pci_dev_put(sis5595_pdev); + sis5595_pdev = NULL; + } } MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>"); |