Author: delphij
Date: Fri Dec 5 21:30:13 2008
New Revision: 185653
URL: http://svn.freebsd.org/changeset/base/185653
Log:
MFC r185593:
Don't attempt to clear status updates if we did not do a link state
change. As a side effect, this makes the excessive interrupts to
disappear which has been observed as a regression in recent stable/7.
Reported by: many (on -stable@)
Reviewed by: davidch
Approved by: re (kensmith, kib)
Modified:
stable/7/sys/ (props changed)
stable/7/sys/dev/bce/if_bce.c
Modified: stable/7/sys/dev/bce/if_bce.c
==============================================================================
--- stable/7/sys/dev/bce/if_bce.c Fri Dec 5 21:19:24 2008
(r185652)
+++ stable/7/sys/dev/bce/if_bce.c Fri Dec 5 21:30:13 2008
(r185653)
@@ -7030,13 +7030,14 @@ bce_intr(void *xsc)
/* Was it a link change interrupt? */
if ((status_attn_bits & STATUS_ATTN_BITS_LINK_STATE) !=
- (sc->status_block->status_attn_bits_ack &
STATUS_ATTN_BITS_LINK_STATE))
+ (sc->status_block->status_attn_bits_ack &
STATUS_ATTN_BITS_LINK_STATE)) {
bce_phy_intr(sc);
- /* Clear any transient status updates during link state change.
*/
- REG_WR(sc, BCE_HC_COMMAND,
- sc->hc_command | BCE_HC_COMMAND_COAL_NOW_WO_INT);
- REG_RD(sc, BCE_HC_COMMAND);
+ /* Clear any transient status updates during link state
change. */
+ REG_WR(sc, BCE_HC_COMMAND,
+ sc->hc_command |
BCE_HC_COMMAND_COAL_NOW_WO_INT);
+ REG_RD(sc, BCE_HC_COMMAND);
+ }
/* If any other attention is asserted then the chip is toast. */
if (((status_attn_bits & ~STATUS_ATTN_BITS_LINK_STATE) !=
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