svn commit: r333095 - head/sys/dev/usb/net

[Ed Maste]

Author: emaste
Date: Mon Apr 30 01:58:24 2018
New Revision: 333095
URL: https://svnweb.freebsd.org/changeset/base/333095

Log:
  if_smsc: fix reset check
  
  In smsc_phy_init function, when the driver was trying to reset PHY, it
  didn't poll for the correct bit (BMCR_RESET) to be cleared.  Instead, it
  anded it with MII_BMCR (which is 0), so it just exited the loop.
  
  This issue was fixed in Linux in commit d94609200069.
  
  Submitted by:	Arshan Khanifar
  MFC after:	1 week
  Sponsored by:	The FreeBSD Foundation

Modified:
  head/sys/dev/usb/net/if_smsc.c

Modified: head/sys/dev/usb/net/if_smsc.c
==============================================================================
--- head/sys/dev/usb/net/if_smsc.c	Mon Apr 30 00:07:41 2018	(r333094)
+++ head/sys/dev/usb/net/if_smsc.c	Mon Apr 30 01:58:24 2018	(r333095)
@@ -1306,7 +1306,7 @@ smsc_phy_init(struct smsc_softc *sc)
 	do {
 		uether_pause(&sc->sc_ue, hz / 100);
 		bmcr = smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR);
-	} while ((bmcr & MII_BMCR) && ((ticks - start_ticks) < max_ticks));
+	} while ((bmcr & BMCR_RESET) && ((ticks - start_ticks) < max_ticks));
 
 	if (((usb_ticks_t)(ticks - start_ticks)) >= max_ticks) {
 		smsc_err_printf(sc, "PHY reset timed-out");