From: Wren Turkal <wt@penguintechs.org>
To: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>,
Zijun Hu <quic_zijuhu@quicinc.com>,
Marcel Holtmann <marcel@holtmann.org>,
Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Subject: Re: [PATCH] Bluetooth: qca: set power_ctrl_enabled on NULL returned by gpiod_get_optional()
Date: Wed, 24 Apr 2024 05:17:39 -0700 [thread overview]
Message-ID: <2371f538-ec53-4037-b171-c62bf4e06eb1@penguintechs.org> (raw)
In-Reply-To: <CAMRc=MfnEct7ThQhCA3AoY7hxq8j1mmFLNNkK17+RSvJxs67XQ@mail.gmail.com>
On 4/24/24 4:56 AM, Bartosz Golaszewski wrote:
> On Wed, Apr 24, 2024 at 1:53 PM Wren Turkal <wt@penguintechs.org> wrote:
>>
>> On 4/24/24 4:16 AM, Wren Turkal wrote:
>>> On 4/24/24 2:04 AM, Bartosz Golaszewski wrote:
>>>> On Wed, 24 Apr 2024 07:07:05 +0200, Wren Turkal<wt@penguintechs.org>
>>>> said:
>>>>> On 4/22/24 6:00 AM, Bartosz Golaszewski wrote:
>>>>>> From: Bartosz Golaszewski<bartosz.golaszewski@linaro.org>
>>>>>>
>>>>>> Any return value from gpiod_get_optional() other than a pointer to a
>>>>>> GPIO descriptor or a NULL-pointer is an error and the driver should
>>>>>> abort probing. That being said: commit 56d074d26c58 ("Bluetooth:
>>>>>> hci_qca:
>>>>>> don't use IS_ERR_OR_NULL() with gpiod_get_optional()") no longer sets
>>>>>> power_ctrl_enabled on NULL-pointer returned by
>>>>>> devm_gpiod_get_optional(). Restore this behavior but bail-out on
>>>>>> errors.
>>>>> Nack. This patch does fixes neither the disable/re-enable problem nor
>>>>> the warm boot problem.
>>>>>
>>>>> Zijun replied to this patch also with what I think is the proper
>>>>> reasoning for why it doesn't fix my setup.
>>>>>
>>>> Indeed, I only addressed a single issue here and not the code under the
>>>> default: label of the switch case. Sorry.
>>>>
>>>> Could you give the following diff a try?
>>>
>>> I had a feeling that was what was going on. I'll give the patch a shot.
>>>
>>> wt
>>
>> Considering this patch is basically equivalent to patch 1/2 from Zijun,
>> I am not surprised that is works similarly. I.e. on a cold boot, I can
>> disable/re-enable bluetooth as many time as I want.
>>
>
> Zijun didn't bail out on errors which is the issue the original patch
> tried to address and this one preserves.
>
>> However, since this patch doesn't include the quirk fix from Zijun's
>> patchset (patch 2/2), bluetooth fails to work after a warm boot.
>>
>
> That's OK, we have the first part right. Let's now see if we can reuse
> patch 2/2 from Zijun.
I'm compiling it right now. Be back soon.
>> @Zijun, this patch looks more idiomatic when I look at the surrounding
>> code than your patch 1/2. Notice how it doesn't use the "else if"
>> construct. It does the NULL test separately after checking for errors.
>>
>> --
>> You're more amazing than you think!
>
> Bart
--
You're more amazing than you think!
next prev parent reply other threads:[~2024-04-24 12:17 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-22 13:00 [PATCH] Bluetooth: qca: set power_ctrl_enabled on NULL returned by gpiod_get_optional() Bartosz Golaszewski
2024-04-24 4:05 ` Krzysztof Kozlowski
2024-04-24 4:55 ` quic_zijuhu
2024-04-24 5:07 ` Wren Turkal
2024-04-24 9:04 ` Bartosz Golaszewski
2024-04-24 9:32 ` quic_zijuhu
2024-04-24 9:50 ` Krzysztof Kozlowski
2024-04-24 11:16 ` Wren Turkal
2024-04-24 11:53 ` Wren Turkal
2024-04-24 11:56 ` Bartosz Golaszewski
2024-04-24 12:09 ` Wren Turkal
2024-04-24 12:17 ` Wren Turkal [this message]
2024-04-24 12:20 ` Bartosz Golaszewski
2024-04-24 12:23 ` Bartosz Golaszewski
2024-04-24 12:24 ` Wren Turkal
2024-04-24 12:27 ` Bartosz Golaszewski
2024-04-24 12:30 ` Wren Turkal
2024-04-24 12:57 ` Bartosz Golaszewski
2024-04-24 12:57 ` Wren Turkal
2024-04-24 13:12 ` quic_zijuhu
2024-04-24 13:26 ` Wren Turkal
2024-04-24 13:30 ` quic_zijuhu
2024-04-24 22:09 ` Wren Turkal
2024-04-24 13:53 ` Bartosz Golaszewski
2024-04-24 22:17 ` Wren Turkal
2024-04-24 23:35 ` quic_zijuhu
2024-04-25 2:34 ` Wren Turkal
2024-04-24 11:25 ` Wren Turkal
2024-04-24 11:53 ` Bartosz Golaszewski
2024-04-24 11:59 ` Wren Turkal
2024-04-24 12:01 ` Bartosz Golaszewski
2024-04-24 12:05 ` Wren Turkal
Reply instructions:
You may reply publicly 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=2371f538-ec53-4037-b171-c62bf4e06eb1@penguintechs.org \
--to=wt@penguintechs.org \
--cc=bartosz.golaszewski@linaro.org \
--cc=brgl@bgdev.pl \
--cc=krzysztof.kozlowski@linaro.org \
--cc=linux-bluetooth@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=luiz.dentz@gmail.com \
--cc=marcel@holtmann.org \
--cc=quic_zijuhu@quicinc.com \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).