From: sashiko-bot@kernel.org
To: "Fabrice Gasnier" <fabrice.gasnier@foss.st.com>
Cc: linux-usb@vger.kernel.org
Subject: Re: [PATCH v3 4/6] usb: dwc2: hcd: fix possible successive vbus supply enables
Date: Fri, 06 Nov 2026 18:08:49 +0000 [thread overview]
Message-ID: <sashiko-outbox-201993@kernel.org> (raw)
In-Reply-To: <20261106-dwc2-low-power-fixes-stm32-v3-4-68d2a0e9bab6@foss.st.com>
> External VBUS supply may have already been enabled, before entering
> dwc2_hcd_reinit (e.g. the controller is in host mode, without any device
> plugged).
> This results in vbus enable count to increase every time this occurs.
> As consequence, dwc2_vbus_supply_exit won't disable vbus upon suspend
> request.
> Fix this by reading PWR bit before and after dwc2_hcd_reinit() call.
>
> Fixes: cd7cd0e6cedf ("usb: dwc2: fix unbalanced use of external vbus-supply")
> Cc: stable@vger.kernel.org
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261106-dwc2-low-power-fixes-stm32-v3-0-68d2a0e9bab6@foss.st.com?part=4
next prev parent reply other threads:[~2026-11-06 18:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-06 17:38 [PATCH v3 0/6] usb: dwc2: fix low power issues found on stm32mp1 Fabrice Gasnier
2026-11-06 17:38 ` [PATCH v3 1/6] usb: dwc2: fix recovery after PM domain off Fabrice Gasnier
2026-11-06 18:16 ` sashiko-bot
2026-11-06 17:38 ` [PATCH v3 2/6] usb: dwc2: fix a possible interrupt storm in hcd resume Fabrice Gasnier
2026-11-06 17:57 ` sashiko-bot
2026-11-06 17:38 ` [PATCH v3 3/6] usb: dwc2: fix a possible interrupt storm on stm32mp1 Fabrice Gasnier
2026-11-06 17:45 ` sashiko-bot
2026-11-06 17:38 ` [PATCH v3 4/6] usb: dwc2: hcd: fix possible successive vbus supply enables Fabrice Gasnier
2026-11-06 18:08 ` sashiko-bot [this message]
2026-11-06 17:38 ` [PATCH v3 5/6] usb: dwc2: hcd: don't disable/enable external vbus by system suspend/resume Fabrice Gasnier
2026-11-06 17:57 ` sashiko-bot
2026-11-06 17:38 ` [PATCH v3 6/6] usb: dwc2: platform: fix stm32mp15 detection logic power management Fabrice Gasnier
2026-11-06 18:05 ` sashiko-bot
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