Messages in this thread Patch in this message | | | From | David Brownell <> | Subject | Re: [PATCH 2/2] usbnet: use MII hooks only if CONFIG_MII is enabled | Date | Sat, 28 Oct 2006 14:10:09 -0700 |
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On Saturday 28 October 2006 4:21 am, Christoph Hellwig wrote:
> This is really awkward and against what we do in any other driver.
Awkward, yes -- which is why I posted the non-awkward version, which is repeated below. (No thanks to "diff" for making the patch ugly though; the resulting code is clean and non-awkward, moving that function helped.)
Against what other drivers do? Since "usbnet.c" is infrastructure code, not a driver, your comment can't apply. Infrastructure uses conditional compilation routinely in such cases.
But remember that the actual drivers follow the standard convention ("select MII") given Randy's patch #1 of 2.
- Dave
------------------------- The usbnet infrastructure must not reference MII symbols unless they're provided in the kernel being built. This extends also to the ethtool hooks that reference those symbols.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Index: g26/drivers/usb/net/usbnet.c =================================================================== --- g26.orig/drivers/usb/net/usbnet.c 2006-10-24 18:29:28.000000000 -0700 +++ g26/drivers/usb/net/usbnet.c 2006-10-25 19:07:16.000000000 -0700 @@ -669,6 +669,9 @@ done: * they'll probably want to use this base set. */ +#if defined(CONFIG_MII) || defined(CONFIG_MII_MODULE) +#define HAVE_MII + int usbnet_get_settings (struct net_device *net, struct ethtool_cmd *cmd) { struct usbnet *dev = netdev_priv(net); @@ -699,20 +702,6 @@ int usbnet_set_settings (struct net_devi } EXPORT_SYMBOL_GPL(usbnet_set_settings); - -void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info) -{ - struct usbnet *dev = netdev_priv(net); - - /* REVISIT don't always return "usbnet" */ - strncpy (info->driver, driver_name, sizeof info->driver); - strncpy (info->version, DRIVER_VERSION, sizeof info->version); - strncpy (info->fw_version, dev->driver_info->description, - sizeof info->fw_version); - usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info); -} -EXPORT_SYMBOL_GPL(usbnet_get_drvinfo); - u32 usbnet_get_link (struct net_device *net) { struct usbnet *dev = netdev_priv(net); @@ -730,40 +719,57 @@ u32 usbnet_get_link (struct net_device * } EXPORT_SYMBOL_GPL(usbnet_get_link); -u32 usbnet_get_msglevel (struct net_device *net) +int usbnet_nway_reset(struct net_device *net) { struct usbnet *dev = netdev_priv(net); - return dev->msg_enable; + if (!dev->mii.mdio_write) + return -EOPNOTSUPP; + + return mii_nway_restart(&dev->mii); } -EXPORT_SYMBOL_GPL(usbnet_get_msglevel); +EXPORT_SYMBOL_GPL(usbnet_nway_reset); -void usbnet_set_msglevel (struct net_device *net, u32 level) +#endif /* HAVE_MII */ + +void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info) { struct usbnet *dev = netdev_priv(net); - dev->msg_enable = level; + /* REVISIT don't always return "usbnet" */ + strncpy (info->driver, driver_name, sizeof info->driver); + strncpy (info->version, DRIVER_VERSION, sizeof info->version); + strncpy (info->fw_version, dev->driver_info->description, + sizeof info->fw_version); + usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info); } -EXPORT_SYMBOL_GPL(usbnet_set_msglevel); +EXPORT_SYMBOL_GPL(usbnet_get_drvinfo); -int usbnet_nway_reset(struct net_device *net) +u32 usbnet_get_msglevel (struct net_device *net) { struct usbnet *dev = netdev_priv(net); - if (!dev->mii.mdio_write) - return -EOPNOTSUPP; + return dev->msg_enable; +} +EXPORT_SYMBOL_GPL(usbnet_get_msglevel); - return mii_nway_restart(&dev->mii); +void usbnet_set_msglevel (struct net_device *net, u32 level) +{ + struct usbnet *dev = netdev_priv(net); + + dev->msg_enable = level; } -EXPORT_SYMBOL_GPL(usbnet_nway_reset); +EXPORT_SYMBOL_GPL(usbnet_set_msglevel); /* drivers may override default ethtool_ops in their bind() routine */ static struct ethtool_ops usbnet_ethtool_ops = { +#ifdef HAVE_MII .get_settings = usbnet_get_settings, .set_settings = usbnet_set_settings, - .get_drvinfo = usbnet_get_drvinfo, .get_link = usbnet_get_link, .nway_reset = usbnet_nway_reset, +#endif + .get_drvinfo = usbnet_get_drvinfo, .get_msglevel = usbnet_get_msglevel, .set_msglevel = usbnet_set_msglevel, }; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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