From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F010E23372C; Mon, 10 Mar 2025 18:23:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741631003; cv=none; b=BIZQ+RnRr5okiifUwqsvtDduNmCRSvet/5nCn/OZUrp2NnRp7PUCm+aeGGlg0xcmGkIbob6BN1F9flkKKJTM6paRpo5NpUIYXUWTA42TAtArrWtb/x9FLmuVclu3zCNLUWfmhr4/HvkfL1a4ZRYHF2byr5fDE285oWOmEqpCAd4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741631003; c=relaxed/simple; bh=6ZgjavyLKTDwi0lncptbW8mEenyWZ+GLhvMOJI0ZoMo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SgcIunF6uu2Ktyed/oRbgDRprmz/ay5BhnS4dHzH1YTtOE80XNMhbdPZ+7Dzd8xECpx3d+5DfyEniOda6a5Ucabw67Fy8rM1ce2p86rPwbSiHJJ7calT96P4pS+1ojHcFfNpA1miAXld9XKjDtRSrNFpaBnfTLd0OPJadt89jXY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ZeEUb7Lo; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="ZeEUb7Lo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 149D5C4CEE5; Mon, 10 Mar 2025 18:23:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1741631002; bh=6ZgjavyLKTDwi0lncptbW8mEenyWZ+GLhvMOJI0ZoMo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZeEUb7LodZ+wwxiF+FmWUkZXWLOgDJd7L+iyG7nZfybcilZUyXsEBiOorH7oKrXNH 3Sj4yfAKRdx6Dm5p7sxUNEVuHQw5FdhvFZt8T/UMjHtY2Sg5AZy28o/3SDqVCRwkMA SqzCxltdFZjarPDwnefaReNly4xh96z0tdCqE7Hg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Prashanth K Subject: [PATCH 5.15 591/620] usb: gadget: Set self-powered based on MaxPower and bmAttributes Date: Mon, 10 Mar 2025 18:07:17 +0100 Message-ID: <20250310170608.859028054@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250310170545.553361750@linuxfoundation.org> References: <20250310170545.553361750@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Prashanth K commit 40e89ff5750fca2c1d6da93f98a2038716bba86c upstream. Currently the USB gadget will be set as bus-powered based solely on whether its bMaxPower is greater than 100mA, but this may miss devices that may legitimately draw less than 100mA but still want to report as bus-powered. Similarly during suspend & resume, USB gadget is incorrectly marked as bus/self powered without checking the bmAttributes field. Fix these by configuring the USB gadget as self or bus powered based on bmAttributes, and explicitly set it as bus-powered if it draws more than 100mA. Cc: stable Fixes: 5e5caf4fa8d3 ("usb: gadget: composite: Inform controller driver of self-powered") Signed-off-by: Prashanth K Link: https://lore.kernel.org/r/20250217120328.2446639-1-prashanth.k@oss.qualcomm.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/composite.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1004,10 +1004,11 @@ static int set_config(struct usb_composi else usb_gadget_set_remote_wakeup(gadget, 0); done: - if (power <= USB_SELF_POWER_VBUS_MAX_DRAW) - usb_gadget_set_selfpowered(gadget); - else + if (power > USB_SELF_POWER_VBUS_MAX_DRAW || + !(c->bmAttributes & USB_CONFIG_ATT_SELFPOWER)) usb_gadget_clear_selfpowered(gadget); + else + usb_gadget_set_selfpowered(gadget); usb_gadget_vbus_draw(gadget, power); if (result >= 0 && cdev->delayed_status) @@ -2475,7 +2476,9 @@ void composite_suspend(struct usb_gadget cdev->suspended = 1; - usb_gadget_set_selfpowered(gadget); + if (cdev->config->bmAttributes & USB_CONFIG_ATT_SELFPOWER) + usb_gadget_set_selfpowered(gadget); + usb_gadget_vbus_draw(gadget, 2); } @@ -2504,8 +2507,11 @@ void composite_resume(struct usb_gadget else maxpower = min(maxpower, 900U); - if (maxpower > USB_SELF_POWER_VBUS_MAX_DRAW) + if (maxpower > USB_SELF_POWER_VBUS_MAX_DRAW || + !(cdev->config->bmAttributes & USB_CONFIG_ATT_SELFPOWER)) usb_gadget_clear_selfpowered(gadget); + else + usb_gadget_set_selfpowered(gadget); usb_gadget_vbus_draw(gadget, maxpower); }