From: Matthias Kaehlcke <mka@chromium.org>
To: Javier Carrasco <javier.carrasco@wolfvision.net>
Cc: Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Helen Koike <helen.koike@collabora.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Russell King <linux@armlinux.org.uk>,
linux-sound@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v4 2/8] usb: misc: onboard_dev: add support for non-hub devices
Date: Wed, 21 Feb 2024 19:24:12 +0000 [thread overview]
Message-ID: <ZdZN3FIS4zcKe4Kw@google.com> (raw)
In-Reply-To: <20240220-onboard_xvf3500-v4-2-dc1617cc5dd4@wolfvision.net>
On Tue, Feb 20, 2024 at 03:05:46PM +0100, Javier Carrasco wrote:
> Most of the functionality this driver provides can be used by non-hub
> devices as well.
>
> To account for the hub-specific code, add a flag to the device data
> structure and check its value for hub-specific code.
Please mention that the driver doesn't power off non-hub devices
during system suspend.
> Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
> ---
> drivers/usb/misc/onboard_usb_dev.c | 3 ++-
> drivers/usb/misc/onboard_usb_dev.h | 10 ++++++++++
> 2 files changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/misc/onboard_usb_dev.c b/drivers/usb/misc/onboard_usb_dev.c
> index 2103af2cb2a6..f43130a6786f 100644
> --- a/drivers/usb/misc/onboard_usb_dev.c
> +++ b/drivers/usb/misc/onboard_usb_dev.c
> @@ -129,7 +129,8 @@ static int __maybe_unused onboard_dev_suspend(struct device *dev)
> if (!device_may_wakeup(node->udev->bus->controller))
> continue;
>
> - if (usb_wakeup_enabled_descendants(node->udev)) {
> + if (usb_wakeup_enabled_descendants(node->udev) ||
> + !onboard_dev->pdata->is_hub) {
This check isn't dependent on characteristics of the USB devices processed
in this loop, therefore it can be performed at function entry. Please combine
it with the check of 'always_powered_in_suspend'. It's also an option to
omit the check completely, 'always_powered_in_suspend' will never be set for
non-hub devices (assuming the sysfs attribute isn't added).
> power_off = false;
> break;
> }
Without code context: please omit the creation of the 'always_powered_in_suspend'
attribute for non-hub devices. As per above we don't plan to hone it, so it
shouldn't exist.
next prev parent reply other threads:[~2024-02-21 19:24 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-20 14:05 [PATCH v4 0/8] usb: misc: onboard_hub: add support for XMOS XVF3500 Javier Carrasco
2024-02-20 14:05 ` [PATCH v4 1/8] usb: misc: onboard_hub: rename to onboard_dev Javier Carrasco
2024-02-21 19:14 ` Matthias Kaehlcke
2024-02-20 14:05 ` [PATCH v4 2/8] usb: misc: onboard_dev: add support for non-hub devices Javier Carrasco
2024-02-21 19:24 ` Matthias Kaehlcke [this message]
2024-02-22 14:42 ` Javier Carrasco
2024-02-27 17:55 ` Matthias Kaehlcke
2024-02-20 14:05 ` [PATCH v4 3/8] drm: ci: arm64.config: update ONBOARD_USB_HUB to ONBOARD_USB_DEV Javier Carrasco
2024-02-20 14:33 ` Helen Koike
2024-02-20 14:05 ` [PATCH v4 4/8] arm64: defconfig: " Javier Carrasco
2024-02-20 14:05 ` [PATCH v4 5/8] ARM: multi_v7_defconfig: update ONBOARD_USB_HUB name Javier Carrasco
2024-02-20 14:05 ` [PATCH v4 6/8] usb: misc: onboard_dev: use device supply names Javier Carrasco
2024-02-21 20:25 ` Matthias Kaehlcke
2024-02-21 20:40 ` Javier Carrasco
2024-02-21 21:18 ` Matthias Kaehlcke
2024-02-21 21:33 ` Javier Carrasco
2024-02-21 21:46 ` Matthias Kaehlcke
2024-02-27 18:12 ` Matthias Kaehlcke
2024-02-20 14:05 ` [PATCH v4 7/8] ASoC: dt-bindings: xmos,xvf3500: add XMOS XVF3500 voice processor Javier Carrasco
2024-02-22 15:02 ` Krzysztof Kozlowski
2024-02-20 14:05 ` [PATCH v4 8/8] usb: misc: onboard_hub: add support for XMOS XVF3500 Javier Carrasco
2024-02-20 14:34 ` [PATCH v4 0/8] " Alexander Stein
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