From patchwork Sun Sep 27 19:49:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 11802475 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9F7D96CA for ; Sun, 27 Sep 2020 19:59:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7EA0623A53 for ; Sun, 27 Sep 2020 19:59:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="N+JwA8r3"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="4RL85lLh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727380AbgI0T7t (ORCPT ); Sun, 27 Sep 2020 15:59:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38696 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726621AbgI0T6B (ORCPT ); Sun, 27 Sep 2020 15:58:01 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2FF89C0613DB; Sun, 27 Sep 2020 12:57:32 -0700 (PDT) Message-Id: <20200927194921.839848434@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1601236650; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=E8BWshtU8a/PkQjFPYy93BN17JLJsGh02VUnxk0upzE=; b=N+JwA8r3ht2f/M3ne58BpHfK1GOt4GMqgR18UWPfudBaJBFVIMdq0c1il9j4d+HHmtwtzs dmqcYnudPntJFjQw+NeBhPlRkwqSgONwm1d7AhSB6RMMtlKXUSrO/zsTuOPAOq0SzUhg72 ZYvkb2hSCYvJCyLpN5Nw1itasArreCiHk2i661yoGbLq2npjGEWG3aIJgA2yx7gcFqOoeX s3wVL+sMCKLksBDWA0g69AYJhaNQL0jnR8gZXl3eqiXQxdYi914TlLexu6dI2Y6U7nqN5H 5n1t4HiKzEK+gZC8Kb5q4zYumbZWOdMm39zvPowPfdmw12wBDSIyP1vvzR1+2g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1601236650; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=E8BWshtU8a/PkQjFPYy93BN17JLJsGh02VUnxk0upzE=; b=4RL85lLhlslR61dMUmztot7BjIosLb2ekytQx92VaR4TQzSfM5fCdFe3L+k6GNbwDMYffR V1pCph8cyROkLAAQ== Date: Sun, 27 Sep 2020 21:49:06 +0200 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Linus Torvalds , Paul McKenney , Matthew Wilcox , Sebastian Andrzej Siewior , "David S. Miller" , Jakub Kicinski , linux-usb@vger.kernel.org, netdev@vger.kernel.org, Christian Benvenuti , Govindarajulu Varadarajan <_govind@gmx.com>, Dave Miller , Jonathan Corbet , Mauro Carvalho Chehab , linux-doc@vger.kernel.org, Luc Van Oostenryck , Jay Cliburn , Chris Snook , Vishal Kulkarni , Jeff Kirsher , intel-wired-lan@lists.osuosl.org, Shannon Nelson , Pensando Drivers , Andrew Lunn , Heiner Kallweit , Russell King , Thomas Bogendoerfer , Solarflare linux maintainers , Edward Cree , Martin Habets , Jon Mason , Daniel Drake , Ulrich Kunitz , Kalle Valo , linux-wireless@vger.kernel.org, Greg Kroah-Hartman , Arend van Spriel , Franky Lin , Hante Meuleman , Chi-Hsien Lin , Wright Feng , brcm80211-dev-list.pdl@broadcom.com, brcm80211-dev-list@cypress.com, Stanislav Yakovlev , Stanislaw Gruszka , Johannes Berg , Emmanuel Grumbach , Luca Coelho , Intel Linux Wireless , Jouni Malinen , Amitkumar Karwar , Ganapathi Bhat , Xinming Hu , libertas-dev@lists.infradead.org, Pascal Terjan , Ping-Ke Shih Subject: [patch 20/35] net: usb: kaweth: Replace kaweth_control() with usb_control_msg() References: <20200927194846.045411263@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Sebastian Andrzej Siewior kaweth_control() is almost the same as usb_control_msg() except for the memory allocation mode (GFP_ATOMIC vs GFP_NOIO) and the in_interrupt() check. All the invocations of kaweth_control() are within the probe function in fully preemtible context so there is no reason to use atomic allocations, GFP_NOIO which is used by usb_control_msg() is perfectly fine. Replace kaweth_control() invocations from probe with usb_control_msg(). Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Cc: "David S. Miller" Cc: Jakub Kicinski Cc: linux-usb@vger.kernel.org Cc: netdev@vger.kernel.org --- drivers/net/usb/kaweth.c | 93 +++++++++++++++-------------------------------- 1 file changed, 30 insertions(+), 63 deletions(-) --- a/drivers/net/usb/kaweth.c +++ b/drivers/net/usb/kaweth.c @@ -282,19 +282,13 @@ static int kaweth_control(struct kaweth_ ****************************************************************/ static int kaweth_read_configuration(struct kaweth_device *kaweth) { - int retval; - - retval = kaweth_control(kaweth, - usb_rcvctrlpipe(kaweth->dev, 0), + return usb_control_msg(kaweth->dev, usb_rcvctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_GET_ETHERNET_DESC, USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE, - 0, - 0, - (void *)&kaweth->configuration, + 0, 0, + &kaweth->configuration, sizeof(kaweth->configuration), KAWETH_CONTROL_TIMEOUT); - - return retval; } /**************************************************************** @@ -302,21 +296,14 @@ static int kaweth_read_configuration(str ****************************************************************/ static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size) { - int retval; - netdev_dbg(kaweth->net, "Setting URB size to %d\n", (unsigned)urb_size); - retval = kaweth_control(kaweth, - usb_sndctrlpipe(kaweth->dev, 0), - KAWETH_COMMAND_SET_URB_SIZE, - USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, - urb_size, - 0, - (void *)&kaweth->scratch, - 0, - KAWETH_CONTROL_TIMEOUT); - - return retval; + return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0), + KAWETH_COMMAND_SET_URB_SIZE, + USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, + urb_size, 0, + &kaweth->scratch, 0, + KAWETH_CONTROL_TIMEOUT); } /**************************************************************** @@ -324,21 +311,14 @@ static int kaweth_set_urb_size(struct ka ****************************************************************/ static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait) { - int retval; - netdev_dbg(kaweth->net, "Set SOFS wait to %d\n", (unsigned)sofs_wait); - retval = kaweth_control(kaweth, - usb_sndctrlpipe(kaweth->dev, 0), - KAWETH_COMMAND_SET_SOFS_WAIT, - USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, - sofs_wait, - 0, - (void *)&kaweth->scratch, - 0, - KAWETH_CONTROL_TIMEOUT); - - return retval; + return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0), + KAWETH_COMMAND_SET_SOFS_WAIT, + USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, + sofs_wait, 0, + &kaweth->scratch, 0, + KAWETH_CONTROL_TIMEOUT); } /**************************************************************** @@ -347,22 +327,15 @@ static int kaweth_set_sofs_wait(struct k static int kaweth_set_receive_filter(struct kaweth_device *kaweth, __u16 receive_filter) { - int retval; - netdev_dbg(kaweth->net, "Set receive filter to %d\n", (unsigned)receive_filter); - retval = kaweth_control(kaweth, - usb_sndctrlpipe(kaweth->dev, 0), - KAWETH_COMMAND_SET_PACKET_FILTER, - USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, - receive_filter, - 0, - (void *)&kaweth->scratch, - 0, - KAWETH_CONTROL_TIMEOUT); - - return retval; + return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0), + KAWETH_COMMAND_SET_PACKET_FILTER, + USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, + receive_filter, 0, + &kaweth->scratch, 0, + KAWETH_CONTROL_TIMEOUT); } /**************************************************************** @@ -407,14 +380,11 @@ static int kaweth_download_firmware(stru kaweth->firmware_buf, kaweth); netdev_dbg(kaweth->net, "Firmware length: %d\n", data_len); - return kaweth_control(kaweth, - usb_sndctrlpipe(kaweth->dev, 0), + return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SCAN, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, - 0, - 0, - (void *)kaweth->firmware_buf, - data_len, + 0, 0, + kaweth->firmware_buf, data_len, KAWETH_CONTROL_TIMEOUT); } @@ -433,15 +403,12 @@ static int kaweth_trigger_firmware(struc kaweth->firmware_buf[6] = 0x00; kaweth->firmware_buf[7] = 0x00; - return kaweth_control(kaweth, - usb_sndctrlpipe(kaweth->dev, 0), - KAWETH_COMMAND_SCAN, - USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, - 0, - 0, - (void *)kaweth->firmware_buf, - 8, - KAWETH_CONTROL_TIMEOUT); + return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0), + KAWETH_COMMAND_SCAN, + USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, + 0, 0, + (void *)kaweth->firmware_buf, 8, + KAWETH_CONTROL_TIMEOUT); } /****************************************************************