Linux-Wireless Archive on lore.kernel.org
 help / color / Atom feed
From: Tom Psyborg <pozega.tomislav@gmail.com>
To: Kalle Valo <kvalo@codeaurora.org>
Cc: Christian Lamparter <chunkeey@gmail.com>,
	linux-wireless@vger.kernel.org, ath10k@lists.infradead.org
Subject: Re: [PATCH] ath10k: restore QCA9880-AR1A (v1) detection
Date: Wed, 18 Sep 2019 23:30:42 +0200
Message-ID: <CAKR_QVJ09gsbvvutDjDU4tR3VdkQRyYveCnAZ-gU9qByERb-=g@mail.gmail.com> (raw)
In-Reply-To: <20190917064412.E237C61577@smtp.codeaurora.org>

On 17/09/2019, Kalle Valo <kvalo@codeaurora.org> wrote:
> Christian Lamparter <chunkeey@gmail.com> wrote:
>
>> This patch restores the old behavior that read
>> the chip_id on the QCA988x before resetting the
>> chip. This needs to be done in this order since
>> the unsupported QCA988x AR1A chips fall off the
>> bus when resetted. Otherwise the next MMIO Op
>> after the reset causes a BUS ERROR and panic.
>>
>> Cc: stable@vger.kernel.org
>> Fixes: 1a7fecb766c8 ("ath10k: reset chip before reading chip_id in
>> probe")
>> Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
>
> I'll drop this as there's no plan to support QCA988X hw1.0.
>
> --
> https://patchwork.kernel.org/patch/11136089/
>
> https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
>
>

Maybe the whole subject on QCA988X cards should be re-evaluated? Since
at this point it's not for certain whether the card is difficult to
support or whether it is damaged.
There was at least one report of QCA988X hw2.0 failing in an identical
way as QCA988X hw1.0. In case it turns out to be hw damage, a fallback
driver mechanism could provide extended lifetime for these cards. A
link to the hw2.0 failure:
https://forum.openwrt.org/t/is-it-possible-to-brick-the-wireless-card-qca988x-irreversibly/32615

  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-06 21:54 Christian Lamparter
2019-09-07 21:43 ` Sasha Levin
2019-09-07 23:18   ` stable backports for "ath10k: restore QCA9880-AR1A (v1) detection" Christian Lamparter
2019-09-10  1:27   ` [PATCH] ath10k: restore QCA9880-AR1A (v1) detection Tom Psyborg
2019-09-10  7:21     ` Kalle Valo
2019-09-10 12:59       ` Tom Psyborg
2019-09-08  6:32 ` Tom Psyborg
2019-09-17  6:44 ` Kalle Valo
2019-09-18 21:30   ` Tom Psyborg [this message]
     [not found] ` <20190917064412.C2E0D61572@smtp.codeaurora.org>
2019-09-20 17:19   ` Christian Lamparter
2019-10-01 13:03     ` Kalle Valo
2019-10-01 14:17       ` Tom Psyborg
2019-10-02 17:19 ` Kalle Valo

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAKR_QVJ09gsbvvutDjDU4tR3VdkQRyYveCnAZ-gU9qByERb-=g@mail.gmail.com' \
    --to=pozega.tomislav@gmail.com \
    --cc=ath10k@lists.infradead.org \
    --cc=chunkeey@gmail.com \
    --cc=kvalo@codeaurora.org \
    --cc=linux-wireless@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-Wireless Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-wireless/0 linux-wireless/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-wireless linux-wireless/ https://lore.kernel.org/linux-wireless \
		linux-wireless@vger.kernel.org
	public-inbox-index linux-wireless

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-wireless


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git