diff options
| author | Stefan Sperling <stsp@cvs.openbsd.org> | 2019-10-28 18:08:09 +0000 |
|---|---|---|
| committer | Stefan Sperling <stsp@cvs.openbsd.org> | 2019-10-28 18:08:09 +0000 |
| commit | cfcd38703794181182b4e68ae055a407c051b110 (patch) | |
| tree | 94bf0297541fb51ceffe28286468d955a7527554 /sys/dev | |
| parent | 58e408be8daf26c9378e1608613aaa61b7bad08b (diff) | |
Make iwm_stop_device() power down bus master DMA clocks on 7k devices only.
Patch by Imre Vadasz
ok patrick@
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/pci/if_iwm.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/sys/dev/pci/if_iwm.c b/sys/dev/pci/if_iwm.c index d83be95e4fc..8ae9f01cb02 100644 --- a/sys/dev/pci/if_iwm.c +++ b/sys/dev/pci/if_iwm.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_iwm.c,v 1.264 2019/10/28 18:06:04 stsp Exp $ */ +/* $OpenBSD: if_iwm.c,v 1.265 2019/10/28 18:08:08 stsp Exp $ */ /* * Copyright (c) 2014, 2016 genua gmbh <info@genua.de> @@ -1632,13 +1632,15 @@ iwm_stop_device(struct iwm_softc *sc) for (qid = 0; qid < nitems(sc->txq); qid++) iwm_reset_tx_ring(sc, &sc->txq[qid]); - if (iwm_nic_lock(sc)) { - /* Power-down device's busmaster DMA clocks */ - iwm_write_prph(sc, IWM_APMG_CLK_DIS_REG, - IWM_APMG_CLK_VAL_DMA_CLK_RQT); - iwm_nic_unlock(sc); + if (sc->sc_device_family == IWM_DEVICE_FAMILY_7000) { + if (iwm_nic_lock(sc)) { + /* Power-down device's busmaster DMA clocks */ + iwm_write_prph(sc, IWM_APMG_CLK_DIS_REG, + IWM_APMG_CLK_VAL_DMA_CLK_RQT); + iwm_nic_unlock(sc); + } + DELAY(5); } - DELAY(5); /* Make sure (redundant) we've released our request to stay awake */ IWM_CLRBITS(sc, IWM_CSR_GP_CNTRL, |