Add another comment about WB195 (AR9285+AR3011) when using ASPM.

svn path=/head/; revision=251606
2013-06-10 20:10:34 +00:00 · 2013-06-10 20:10:34 +00:00 · b674594527 · 2020-12-20 02:59:44 +00:00
commit b674594527
parent 86e92a9cf8
1 changed files with 4 additions and 0 deletions
--- a/sys/dev/ath/if_ath_btcoex.c
+++ b/sys/dev/ath/if_ath_btcoex.c
@ -134,6 +134,10 @@ ath_btcoex_cfg_wb195(struct ath_softc *sc)
 * When using bluetooth coexistence, ASPM needs to be disabled
 * otherwise the sleeping interferes with the bluetooth (USB)
 * operation and the MAC sleep/wakeup hardware.
+ *
+ * The PCIe powersave routine also needs to not be called
+ * by the driver during suspend/resume, else things will get
+ * a little odd.  Check Linux ath9k for more details.
 */
 static int
 ath_btcoex_aspm_wb195(struct ath_softc *sc)