Date: Wed, 8 Feb 2017 06:54:09 +0000 (UTC) From: Adrian Chadd <adrian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r313416 - head/sys/dev/iwm Message-ID: <201702080654.v186s9lg013301@repo.freebsd.org>
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Author: adrian Date: Wed Feb 8 06:54:08 2017 New Revision: 313416 URL: https://svnweb.freebsd.org/changeset/base/313416 Log: [iwm] Only for family 7000 power-down busmaster DMA clocks when stopping. Taken-From: Linux iwlwifi Obtained from: DragonflyBSD commit 4c45994fcc77373ae2fb0901db15368c9731f641 Modified: head/sys/dev/iwm/if_iwm.c Modified: head/sys/dev/iwm/if_iwm.c ============================================================================== --- head/sys/dev/iwm/if_iwm.c Wed Feb 8 06:53:23 2017 (r313415) +++ head/sys/dev/iwm/if_iwm.c Wed Feb 8 06:54:08 2017 (r313416) @@ -1401,11 +1401,12 @@ iwm_stop_device(struct iwm_softc *sc) for (qid = 0; qid < nitems(sc->txq); qid++) iwm_reset_tx_ring(sc, &sc->txq[qid]); - /* - * Power-down device's busmaster DMA clocks - */ - iwm_write_prph(sc, IWM_APMG_CLK_DIS_REG, IWM_APMG_CLK_VAL_DMA_CLK_RQT); - DELAY(5); + if (sc->cfg->device_family == IWM_DEVICE_FAMILY_7000) { + /* Power-down device's busmaster DMA clocks */ + iwm_write_prph(sc, IWM_APMG_CLK_DIS_REG, + IWM_APMG_CLK_VAL_DMA_CLK_RQT); + DELAY(5); + } /* Make sure (redundant) we've released our request to stay awake */ IWM_CLRBITS(sc, IWM_CSR_GP_CNTRL,
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