From patchwork Wed Jun 5 17:44:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Smirnov X-Patchwork-Id: 13687223 Received: from shark1.inbox.lv (shark1.inbox.lv [194.152.32.81]) (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 95F9D621 for ; Wed, 5 Jun 2024 17:44:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.152.32.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717609453; cv=none; b=Za5se9n8LrRFKXtJZiFGoAa3PgHGTkbfqHkFzNF1EfeJc/4ahS4goehLOHM4liafF4hEXuFaU32zBxxX47tmP2FXRvY0O5ekQXb4xroORPTK/N+hWQ035Zdv5y3G63LryWUyJMDcWIyajVg9jnVyjTRvGNi2mWecdi3a2DJ+w6Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717609453; c=relaxed/simple; bh=GJn/xA6s1+S1gr4PC0gOF49LsFKmnQcWpi3zDjUFMiw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; 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x=1717611249; bh=GJn/xA6s1+S1gr4PC0gOF49LsFKmnQcWpi3zDjUFMiw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:X-ESPOL: From:Date:To:Cc:Message-ID:Subject:Reply-To; b=b3c32LE+eCdkW2TvEzLgygjcyLDf41ibQZWSiEMcv6sVwrQILXSHqCBbG6H6Qf29j BZZnH+q11zua1hd1M0m9guRMRjEccj/Tc0+K9/j90Wh6kQsD9YlEM7wZCdHKVgQ1w5 qt+bU4Hg7Y+adlLEedwG+RbOszCV6G7GW5dfZF/4= Received: from mail.inbox.lv (pop1 [127.0.0.1]) by shark1-in.inbox.lv (Postfix) with ESMTP id 4VvZZx1mNYz2d6L9; Wed, 5 Jun 2024 20:44:09 +0300 (EEST) From: Dmitry To: linux-usb@vger.kernel.org Cc: Dmitry Subject: [PATCH] usb: serial: Fix mos7840 hangup when resuming from standby Date: Wed, 5 Jun 2024 20:44:01 +0300 Message-ID: <20240605174401.3193-1-d.smirnov@inbox.lv> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240604225507.6801-1-d.smirnov@inbox.lv> References: <20240604225507.6801-1-d.smirnov@inbox.lv> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Virus-Scanned: OK X-ESPOL: EZeEAiZdmGUky828N/0M6uvn2N+6SFshtTn7yqFDmn8l0K+jx9N0cWyUGILnHwa7bg== --- drivers/usb/serial/mos7840.c | 50 ++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 8b0308d84270..30c5b09a4409 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1737,6 +1737,54 @@ static void mos7840_port_remove(struct usb_serial_port *port) kfree(mos7840_port); } +static int mos7840_suspend(struct usb_serial *serial, pm_message_t message) +{ + struct moschip_port *mos7840_port; + struct usb_serial_port *port; + int i; + dev_dbg(&serial->interface->dev, "mos7840_suspend\n"); + + for (i = 0; i < serial->num_ports; ++i) { + port = serial->port[i]; + if (!tty_port_initialized(&port->port)) + continue; + + mos7840_port = usb_get_serial_port_data(port); + + usb_kill_urb(mos7840_port->read_urb); + mos7840_port->read_urb_busy = false; + } + return 0; +} + +static int mos7840_resume(struct usb_serial *serial) +{ + struct moschip_port *mos7840_port; + struct usb_serial_port *port; + int res; + int i; + dev_dbg(&serial->interface->dev, "mos7840_resume\n"); + + for (i = 0; i < serial->num_ports; ++i) { + port = serial->port[i]; + if (!tty_port_initialized(&port->port)) + continue; + + mos7840_port = usb_get_serial_port_data(port); + + if (port->bulk_in_size) { + res = usb_submit_urb(mos7840_port->read_urb, GFP_NOIO); + + if (res) { + usb_kill_urb(mos7840_port->read_urb); + mos7840_port->read_urb_busy = false; + } + } + } + + return 0; +} + static struct usb_serial_driver moschip7840_4port_device = { .driver = { .owner = THIS_MODULE, @@ -1764,6 +1812,8 @@ static struct usb_serial_driver moschip7840_4port_device = { .port_probe = mos7840_port_probe, .port_remove = mos7840_port_remove, .read_bulk_callback = mos7840_bulk_in_callback, + .suspend = mos7840_suspend, + .resume = mos7840_resume, }; static struct usb_serial_driver * const serial_drivers[] = {