usbnet: Don't waste time calling uno_stop if device is detaching.
The hardware is most likely gone, so trying to write to its registers (and, in some cases, wait until a timeout for a device to reset) is a waste of time. Even if it was detached only in software with drvctl, reattaching it will reset the device anyway.
This commit is contained in:
parent
59c4aff91f
commit
42232f3bdc
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: usbnet.c,v 1.67 2022/03/03 05:49:44 riastradh Exp $ */
|
||||
/* $NetBSD: usbnet.c,v 1.68 2022/03/03 05:49:58 riastradh Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 2019 Matthew R. Green
|
||||
|
@ -31,7 +31,7 @@
|
|||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD: usbnet.c,v 1.67 2022/03/03 05:49:44 riastradh Exp $");
|
||||
__KERNEL_RCSID(0, "$NetBSD: usbnet.c,v 1.68 2022/03/03 05:49:58 riastradh Exp $");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/kernel.h>
|
||||
|
@ -1154,7 +1154,12 @@ usbnet_stop(struct usbnet *un, struct ifnet *ifp, int disable)
|
|||
* the hardware. The driver's uno_stop routine now has
|
||||
* exclusive access to any registers that might previously have
|
||||
* been used by to ifmedia, mii, or ioctl callbacks.
|
||||
*
|
||||
* Don't bother if the device is being detached, though -- if
|
||||
* it's been unplugged then there's no point in trying to touch
|
||||
* the registers.
|
||||
*/
|
||||
if (!unp->unp_dying)
|
||||
uno_stop(un, ifp, disable);
|
||||
|
||||
/* Stop transfers. */
|
||||
|
|
Loading…
Reference in New Issue