On Friday 25 January 2008, Jussi Kivilinna wrote:
> Function pointer is for 'subminidrivers' that need to do work on device
> right after minidriver has initialized hardware.
>
> For example, rndis_wlan setting device specific configuration parameters
> with OID_GEN_RNDIS_CONFIG_PARAMETER right after rndis_host has
> initialized hardware with RNDIS_INIT.
>
> Signed-off-by: Jussi Kivilinna <jussi.kivilinna@xxxxxxxx>
Acked-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
... though I'm not sure I'd coin a term like "subminidriver". ;)
> ---
>
> drivers/net/usb/rndis_host.c | 6 ++++++
> drivers/net/usb/usbnet.h | 5 +++++
> 2 files changed, 11 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
> index 1d6bf0a..0813903 100644
> --- a/drivers/net/usb/rndis_host.c
> +++ b/drivers/net/usb/rndis_host.c
> @@ -336,6 +336,12 @@ int generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf)
> dev->hard_mtu, tmp, dev->rx_urb_size,
> 1 << le32_to_cpu(u.init_c->packet_alignment));
>
> + /* module has some device initialization code needs to be done right
> + * after RNDIS_INIT */
> + if (dev->driver_info->early_init &&
> + dev->driver_info->early_init(dev) != 0)
> + goto halt_fail_and_release;
> +
> /* Get designated host ethernet address */
> reply_len = ETH_ALEN;
> retval = rndis_query(dev, intf, u.buf, OID_802_3_PERMANENT_ADDRESS,
> diff --git a/drivers/net/usb/usbnet.h b/drivers/net/usb/usbnet.h
> index 0b4bf09..25b63d3 100644
> --- a/drivers/net/usb/usbnet.h
> +++ b/drivers/net/usb/usbnet.h
> @@ -116,6 +116,11 @@ struct driver_info {
> struct sk_buff *(*tx_fixup)(struct usbnet *dev,
> struct sk_buff *skb, gfp_t flags);
>
> + /* early initialization code, can sleep. This is for minidrivers
> + * having 'subminidrivers' that need to do extra initialization
> + * right after minidriver have initialized hardware. */
> + int (*early_init)(struct usbnet *dev);
> +
> /* for new devices, use the descriptor-reading code instead */
> int in; /* rx endpoint */
> int out; /* tx endpoint */
>
-
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