linux-kernel - Re: [PATCH v2] Bluetooth: qca: set power_ctrl_enabled on NULL returned by gpiod_get

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Date: Wed, 24 Apr 2024 06:10:21 -0700
From: Wren Turkal <wt@...guintechs.org>
To: Bartosz Golaszewski <brgl@...ev.pl>, Marcel Holtmann
 <marcel@...tmann.org>, Luiz Augusto von Dentz <luiz.dentz@...il.com>,
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
 Zijun Hu <quic_zijuhu@...cinc.com>
Subject: Re: [PATCH v2] Bluetooth: qca: set power_ctrl_enabled on NULL
 returned by gpiod_get_optional()

On 4/24/24 5:29 AM, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski<bartosz.golaszewski@...aro.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.
> While at it: also bail-out on error returned when trying to get the
> "swctrl" GPIO.
> 
> Reported-by: Wren Turkal<wt@...guintechs.org>
> Reported-by: Zijun Hu<quic_zijuhu@...cinc.com>
> Closes:https://lore.kernel.org/linux-bluetooth/1713449192-25926-2-git-send-email-quic_zijuhu@quicinc.com/
> Fixes: 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()")
> Reviewed-by: Krzysztof Kozlowski<krzysztof.kozlowski@...aro.org>
> Signed-off-by: Bartosz Golaszewski<bartosz.golaszewski@...aro.org>

Tested-by: "Wren Turkal" <wt@...guintechs.org>


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