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 1F0111170D for ; Mon, 11 Sep 2023 14:13:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9936CC433C7; Mon, 11 Sep 2023 14:13:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1694441627; bh=0eZpFFnQpP8udK6Hjal76/IFBYxySvWY2MrKpm8r12w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LwXPOJlWxPJrdtSGFBW7EhzwEa8Oo4kJcKMHHFN33320muuQz2ktjhFVgi/zv5YK0 4tZVBcEwN7KtH+zs+KqvnJOudimI0bYF/AapxKeOwdF0iLsAYMqLTOrRZHhem2ZWSZ ZqfA7qEYrzdimdTp4NTUNAadwnrbBA7BVfsK0Qts= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Xu Yang , Peter Chen , Sasha Levin Subject: [PATCH 6.5 480/739] usb: phy: mxs: fix getting wrong state with mxs_phy_is_otg_host() Date: Mon, 11 Sep 2023 15:44:39 +0200 Message-ID: <20230911134704.548087223@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230911134650.921299741@linuxfoundation.org> References: <20230911134650.921299741@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.5-stable review patch. If anyone has any objections, please let me know. ------------------ From: Xu Yang [ Upstream commit 5eda42aebb7668b4dcff025cd3ccb0d3d7c53da6 ] The function mxs_phy_is_otg_host() will return true if OTG_ID_VALUE is 0 at USBPHY_CTRL register. However, OTG_ID_VALUE will not reflect the real state if the ID pin is float, such as Host-only or Type-C cases. The value of OTG_ID_VALUE is always 1 which means device mode. This patch will fix the issue by judging the current mode based on last_event. The controller will update last_event in time. Fixes: 7b09e67639d6 ("usb: phy: mxs: refine mxs_phy_disconnect_line") Signed-off-by: Xu Yang Acked-by: Peter Chen Link: https://lore.kernel.org/r/20230627110353.1879477-2-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/phy/phy-mxs-usb.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index e1a2b2ea098b5..cceabb9d37e98 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -388,14 +388,8 @@ static void __mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool disconnect) static bool mxs_phy_is_otg_host(struct mxs_phy *mxs_phy) { - void __iomem *base = mxs_phy->phy.io_priv; - u32 phyctrl = readl(base + HW_USBPHY_CTRL); - - if (IS_ENABLED(CONFIG_USB_OTG) && - !(phyctrl & BM_USBPHY_CTRL_OTG_ID_VALUE)) - return true; - - return false; + return IS_ENABLED(CONFIG_USB_OTG) && + mxs_phy->phy.last_event == USB_EVENT_ID; } static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on) -- 2.40.1