diff options
| author | Jarkko Nikula <jarkko.nikula@linux.intel.com> | 2015-02-13 16:52:25 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2015-03-09 12:51:59 +0300 |
| commit | fef220da43d8537ed7d11da4db17b958cd779887 (patch) | |
| tree | 191ab2edcc6ee6eabedbdd1cc0ca7e3d34b8ad6c /drivers/i2c | |
| parent | f85da3f5de6f354bc26eb84c013b41a8b8558c5e (diff) | |
| download | linux-fef220da43d8537ed7d11da4db17b958cd779887.tar.xz | |
i2c: i801: Use managed pcim_* PCI device initialization and reservation
Simplifies the code a bit and makes easier to disable PCI device on driver
detach by removing the pcim_pin_device() call in the future if needed.
Reason why i2c-i801.c doesn't ever call pci_disable_device() was because it
made some systems to hang during power-off. See commit d6fcb3b9cf77
("[PATCH] i2c-i801.c: don't pci_disable_device() after it was just enabled")
and
http://marc.info/?l=linux-kernel&m=115160053309535&w=2
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 25 |
1 files changed, 9 insertions, 16 deletions
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 5fb35464f693..5ecbb3fdc27e 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -1180,35 +1180,35 @@ static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id) } priv->features &= ~disable_features; - err = pci_enable_device(dev); + err = pcim_enable_device(dev); if (err) { dev_err(&dev->dev, "Failed to enable SMBus PCI device (%d)\n", err); - goto exit; + return err; } + pcim_pin_device(dev); /* Determine the address of the SMBus area */ priv->smba = pci_resource_start(dev, SMBBAR); if (!priv->smba) { dev_err(&dev->dev, "SMBus base address uninitialized, upgrade BIOS\n"); - err = -ENODEV; - goto exit; + return -ENODEV; } err = acpi_check_resource_conflict(&dev->resource[SMBBAR]); if (err) { - err = -ENODEV; - goto exit; + return -ENODEV; } - err = pci_request_region(dev, SMBBAR, dev_driver_string(&dev->dev)); + err = pcim_iomap_regions(dev, 1 << SMBBAR, + dev_driver_string(&dev->dev)); if (err) { dev_err(&dev->dev, "Failed to request SMBus region 0x%lx-0x%Lx\n", priv->smba, (unsigned long long)pci_resource_end(dev, SMBBAR)); - goto exit; + return err; } pci_read_config_byte(priv->pci_dev, SMBHSTCFG, &temp); @@ -1276,7 +1276,7 @@ static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id) err = i2c_add_adapter(&priv->adapter); if (err) { dev_err(&dev->dev, "Failed to add SMBus adapter\n"); - goto exit_release; + return err; } i801_probe_optional_slaves(priv); @@ -1286,11 +1286,6 @@ static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id) pci_set_drvdata(dev, priv); return 0; - -exit_release: - pci_release_region(dev, SMBBAR); -exit: - return err; } static void i801_remove(struct pci_dev *dev) @@ -1301,8 +1296,6 @@ static void i801_remove(struct pci_dev *dev) i2c_del_adapter(&priv->adapter); pci_write_config_byte(dev, SMBHSTCFG, priv->original_hstcfg); - pci_release_region(dev, SMBBAR); - /* * do not call pci_disable_device(dev) since it can cause hard hangs on * some systems during power-off (eg. Fujitsu-Siemens Lifebook E8010) |