On Wed, Dec 1, 2010 at 11:21 AM, Bruno Randolf <br1@xxxxxxxxxxx> wrote: > On Wed December 1 2010 19:09:03 Sedat Dilek wrote: >> Hi, >> >> I have built today a linux-next (next-20101201) kernel which includes >> wireless-next-2.6 up to master-2010-11-30. [...] >> Unfortunately, my wlan network connection is totally unstable. [...] > 1.) For identification of the chipset, please: > dmesg |grep "ath5.*chip" > > 2.) Is there a problem when you don't use encryption? > > 3.) git bisect might help track it down. > > bruno OK, I did not a "classic" git-bisect, I created from linux-next (next-20101202) GIT tree a revert-ath5k patchset (30 in total). [1] VERY GOOD: Revertiing all 30 patches ...leads to a stable system. [2] REDUCED DISCONNECTIONS DROPS: Reverting 0001..0008 This stabilizes the system, but... listening to a radio broadcast-stream with VLC is a pain in the ass... permanent audio dropouts. I had only 2 disconnections in the first 10mins when system was up (normally I can see disconnects after loggin into my KDE desktop). [3] GOOD AUDIO STREAMING: Reverting 0001..0014 This is just fine, system like I am used to. [4] CONCLUSION So I played a bit with my revert-patchset. Reverting 0001..0008 + a refreshed v2 of 0014-Revert-ath5k-Use-turbo-flag-on-DCU.patch (patch attached) is doing the job here. Having a closer look into 0008 (parts of drivers/net/wireless/ath/ath5k/reset.c): $ grep AR5212 patches/revert-wireless-patches/0008-Revert-ath5k-Support-synth-only-channel-change-for-A.patch - if (ah->ah_version == AR5K_AR5212) + * On AR5212 TSF is almost preserved across a - * On AR5212 TSF is almost preserved across a + if (ah->ah_version == AR5K_AR5212) { - if (ah->ah_version == AR5K_AR5212 && As I mentionned I have a AR5212 wlan device! What to do with that parts? Any idea? Kind Regards, - Sedat - P.S.: I have added a list containing all commit-ids (chronological) and a script how I reverted (documenting for myself). $ ls patches/revert-wireless-patches/00*.patch patches/revert-wireless-patches/0001-Revert-ath5k-Set-turbo-bit-on-rf-bank-2.patch patches/revert-wireless-patches/0002-Revert-ath5k-Clean-up-turbo-mode-initvals-rfregs.patch patches/revert-wireless-patches/0003-Revert-ath5k-Cleanup-turbo-channel-flags.patch patches/revert-wireless-patches/0004-Revert-ath5k-Use-correct-clock-when-setting-ofdm-tim.patch patches/revert-wireless-patches/0005-Revert-ath5k-Skip-tx-power-setting-on-AR5210-for-now.patch patches/revert-wireless-patches/0006-Revert-ath5k-Tweak-phy-activate-to-rx-start-delay-ba.patch patches/revert-wireless-patches/0007-Revert-ath5k-No-need-to-save-restore-staid-flags-on-.patch patches/revert-wireless-patches/0008-Revert-ath5k-Support-synth-only-channel-change-for-A.patch patches/revert-wireless-patches/0009-Revert-ath5k-Skip-powertable-setting-when-we-are-on-.patch patches/revert-wireless-patches/0010-Revert-ath5k-Update-PLL-programming-for-turbo-half-q.patch patches/revert-wireless-patches/0011-Revert-ath5k-Update-spur-mitigation-filter-for-turbo.patch patches/revert-wireless-patches/0012-Revert-ath5k-Tweak-power-detector-delays-on-RF5111-R.patch patches/revert-wireless-patches/0013-Revert-ath5k-Always-set-IFS-intervals-on-reset.patch patches/revert-wireless-patches/0014-Revert-ath5k-Use-turbo-flag-on-DCU.patch patches/revert-wireless-patches/0015-Revert-ath5k-Set-all-IFS-intervals-not-just-slot-tim.patch patches/revert-wireless-patches/0016-Revert-ath5k-Extend-rate_duration.patch patches/revert-wireless-patches/0017-Revert-ath5k-Extend-get_default_sifs-slot_time.patch patches/revert-wireless-patches/0018-Revert-ath5k-Move-tx-retries-setting-outside-reset_t.patch patches/revert-wireless-patches/0019-Revert-ath5k-Increase-PHY-settling-parameters-for-tu.patch patches/revert-wireless-patches/0020-Revert-ath5k-Small-cleanup-on-tweak_initvals.patch patches/revert-wireless-patches/0021-Revert-ath5k-Put-core-clock-initialization-on-a-new-.patch patches/revert-wireless-patches/0022-Revert-ath5k-Add-new-field-on-ath5k_hw-to-track-band.patch patches/revert-wireless-patches/0023-Revert-ath5k-Use-new-function-to-stop-beacon-queue.patch patches/revert-wireless-patches/0024-Revert-ath5k-Check-RXE-when-setting-RXDP.patch patches/revert-wireless-patches/0025-Revert-ath5k-Use-DCU-early-termination-correctly.patch patches/revert-wireless-patches/0026-Revert-ath5k-Debug-DMA-timeouts.patch patches/revert-wireless-patches/0027-Revert-ath5k-Use-new-dma_stop-function-on-base.c.patch patches/revert-wireless-patches/0028-Revert-ath5k-Stop-PCU-on-reset.patch patches/revert-wireless-patches/0029-Revert-ath5k-Add-new-function-to-stop-rx-tx-DMA.patch patches/revert-wireless-patches/0030-Revert-ath5k-Reset-cleanup-and-generic-cleanup.patch
Index: linux-next/drivers/net/wireless/ath/ath5k/qcu.c =================================================================== --- linux-next.orig/drivers/net/wireless/ath/ath5k/qcu.c +++ linux-next/drivers/net/wireless/ath/ath5k/qcu.c @@ -647,11 +647,6 @@ * on ath5k_hw_set_ifs_intervals */ ath5k_hw_set_tx_retry_limits(ah, 0); - /* Set the turbo flag when operating on 40MHz */ - if (ah->ah_bwmode == AR5K_BWMODE_40MHZ) - AR5K_REG_ENABLE_BITS(ah, AR5K_DCU_GBL_IFS_MISC, - AR5K_DCU_GBL_IFS_MISC_TURBO_MODE); - /* If we didn't set IFS timings through * ath5k_hw_set_coverage_class make sure * we set them here */
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