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usb : usb_kbd : Populating 'priv' member of USB keyboard device_t structure

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This patch populates the 'priv' field of the USB keyboard device_t
structure. The 'priv' field is populated with the address of the
'struct usb_device' structure that represents the USB device.

The 'priv' field can then be used in the 'usb_event_poll' function to
determine the USB device that requires to be polled. An
example of its usage in 'usb_event_poll' function is as below.

	device_t *dev;
	struct usb_device *usb_kbd_dev;

	<snip>

	dev = device_get_by_name("usbkbd");
	usb_kbd_dev = (struct usb_device *)dev->priv;
	iface = &usb_kbd_dev->config.if_desc[0];

Signed-off-by: Thomas Abraham <t-abraham@ti.com>
Signed-off-by: Remy Bohmer <linux@bohmer.net>
This commit is contained in:
Thomas Abraham 2009-01-04 12:15:35 +05:30 committed by Remy Bohmer
parent 366523c26b
commit 1eb734fed3
1 changed files with 1 additions and 0 deletions
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1
common/usb_kbd.c
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@ -183,6 +183,7 @@ int drv_usb_kbd_init(void)
usb_kbd_dev.puts = NULL;
usb_kbd_dev.getc = usb_kbd_getc;
usb_kbd_dev.tstc = usb_kbd_testc;
usb_kbd_dev.priv = (void *)dev;
error = device_register (&usb_kbd_dev);
if(error==0) {
/* check if this is the standard input device */