From patchwork Mon Sep 7 14:50:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 11761165 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 AAC0459D for ; Mon, 7 Sep 2020 14:52:49 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DC525207C3 for ; Mon, 7 Sep 2020 14:52:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="SmXFytf4"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="AO0NWMVe" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DC525207C3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 7C8071791; Mon, 7 Sep 2020 16:52:01 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 7C8071791 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1599490365; bh=VyYPJEj5Ta05TnAL4Uqngww5JY0W3tZR+jtP4bI3fM8=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=SmXFytf4Mr2XJhO/FpzAJheZKue8lH2BmijqxHfYA5UzqSdtfP4vb6wdBYFKbdtoQ kTKvcDSjuB06SXSYdsjk/313dqk6n+NV1si8pnVdBmBT1+zxGBlzOkBJtPv3KWnT11 WzfucKavkn0InDHUAJ1MambEM2bVB7fn8o06wUGI= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 3D548F8021C; Mon, 7 Sep 2020 16:51:23 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id B0A48F8028D; Mon, 7 Sep 2020 16:51:11 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on alsa1.perex.cz X-Spam-Level: X-Spam-Status: No, score=-0.1 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id B9E65F800FD for ; Mon, 7 Sep 2020 16:51:00 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz B9E65F800FD Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="AO0NWMVe" Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 49690207C3; Mon, 7 Sep 2020 14:50:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599490258; bh=VyYPJEj5Ta05TnAL4Uqngww5JY0W3tZR+jtP4bI3fM8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AO0NWMVeiykJuFlIG2+j/MgHbQ1A9SkfAaTHndL7x8pAgyokDPAePFPyq4+eMfyoJ iulHCmkqToL92A4X1uEeI8AjdoLKZWWY7nECRBYr05PHYN6LFOqgRvJuN1Aw8nZwgg AEJObpCRRN8wzpUSgvETVNQzKrE63S6eRb42pSiU= From: Greg Kroah-Hartman To: himadrispandya@gmail.com, dvyukov@google.com, linux-usb@vger.kernel.org Subject: [PATCH v2 01/11] USB: move snd_usb_pipe_sanity_check into the USB core Date: Mon, 7 Sep 2020 16:50:58 +0200 Message-Id: <20200907145108.3766613-2-gregkh@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200907145108.3766613-1-gregkh@linuxfoundation.org> References: <20200907145108.3766613-1-gregkh@linuxfoundation.org> MIME-Version: 1.0 Cc: alsa-devel@alsa-project.org, "Gustavo A. R. Silva" , johan.hedberg@gmail.com, Chris Wulff , Takashi Iwai , Greg Kroah-Hartman , marcel@holtmann.org, Eli Billauer , Dmitry Panchenko , linux-kernel@vger.kernel.org, Jussi Laako , tiwai@suse.com, stern@rowland.harvard.ed, linux-bluetooth@vger.kernel.org, Alexander Tsoy , Alan Stern , Nick Kossifidis , Jesus Ramos , "Geoffrey D. Bennett" , Emiliano Ingrassia X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" snd_usb_pipe_sanity_check() is a great function, so let's move it into the USB core so that other parts of the kernel, including the USB core, can call it. Name it usb_pipe_type_check() to match the existing usb_urb_ep_type_check() call, which now uses this function. Cc: Jaroslav Kysela Cc: Takashi Iwai Cc: "Gustavo A. R. Silva" Cc: Eli Billauer Cc: Emiliano Ingrassia Cc: Alan Stern Cc: Alexander Tsoy Cc: "Geoffrey D. Bennett" Cc: Jussi Laako Cc: Nick Kossifidis Cc: Dmitry Panchenko Cc: Chris Wulff Cc: Jesus Ramos Cc: linux-usb@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: alsa-devel@alsa-project.org Reviewed-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- v2: - use usb_pipe_type_check() instead of usb_urb_ep_type_check in urb.c - fix typo in function description - both changes thanks to Alan Stern's review comments - added Takashi Iwai's reviewed-by drivers/usb/core/urb.c | 31 +++++++++++++++++++++++-------- include/linux/usb.h | 1 + sound/usb/helper.c | 16 +--------------- sound/usb/helper.h | 1 - sound/usb/mixer_scarlett_gen2.c | 2 +- sound/usb/quirks.c | 12 ++++++------ 6 files changed, 32 insertions(+), 31 deletions(-) diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 27e83e55a590..357b149b20d3 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -192,24 +192,39 @@ static const int pipetypes[4] = { }; /** - * usb_urb_ep_type_check - sanity check of endpoint in the given urb - * @urb: urb to be checked + * usb_pipe_type_check - sanity check of a specific pipe for a usb device + * @dev: struct usb_device to be checked + * @pipe: pipe to check * * This performs a light-weight sanity check for the endpoint in the - * given urb. It returns 0 if the urb contains a valid endpoint, otherwise - * a negative error code. + * given usb device. It returns 0 if the pipe is valid for the specific usb + * device, otherwise a negative error code. */ -int usb_urb_ep_type_check(const struct urb *urb) +int usb_pipe_type_check(struct usb_device *dev, unsigned int pipe) { const struct usb_host_endpoint *ep; - ep = usb_pipe_endpoint(urb->dev, urb->pipe); + ep = usb_pipe_endpoint(dev, pipe); if (!ep) return -EINVAL; - if (usb_pipetype(urb->pipe) != pipetypes[usb_endpoint_type(&ep->desc)]) + if (usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)]) return -EINVAL; return 0; } +EXPORT_SYMBOL_GPL(usb_pipe_type_check); + +/** + * usb_urb_ep_type_check - sanity check of endpoint in the given urb + * @urb: urb to be checked + * + * This performs a light-weight sanity check for the endpoint in the + * given urb. It returns 0 if the urb contains a valid endpoint, otherwise + * a negative error code. + */ +int usb_urb_ep_type_check(const struct urb *urb) +{ + return usb_pipe_type_check(urb->dev, urb->pipe); +} EXPORT_SYMBOL_GPL(usb_urb_ep_type_check); /** @@ -474,7 +489,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) */ /* Check that the pipe's type matches the endpoint's type */ - if (usb_urb_ep_type_check(urb)) + if (usb_pipe_type_check(urb->dev, urb->pipe)) dev_WARN(&dev->dev, "BOGUS urb xfer, pipe %x != type %x\n", usb_pipetype(urb->pipe), pipetypes[xfertype]); diff --git a/include/linux/usb.h b/include/linux/usb.h index 20c555db4621..0b3963d7ec38 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1764,6 +1764,7 @@ static inline int usb_urb_dir_out(struct urb *urb) return (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_OUT; } +int usb_pipe_type_check(struct usb_device *dev, unsigned int pipe); int usb_urb_ep_type_check(const struct urb *urb); void *usb_alloc_coherent(struct usb_device *dev, size_t size, diff --git a/sound/usb/helper.c b/sound/usb/helper.c index 4c12cc5b53fd..cf92d7110773 100644 --- a/sound/usb/helper.c +++ b/sound/usb/helper.c @@ -63,20 +63,6 @@ void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype return NULL; } -/* check the validity of pipe and EP types */ -int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe) -{ - static const int pipetypes[4] = { - PIPE_CONTROL, PIPE_ISOCHRONOUS, PIPE_BULK, PIPE_INTERRUPT - }; - struct usb_host_endpoint *ep; - - ep = usb_pipe_endpoint(dev, pipe); - if (!ep || usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)]) - return -EINVAL; - return 0; -} - /* * Wrapper for usb_control_msg(). * Allocates a temp buffer to prevent dmaing from/to the stack. @@ -89,7 +75,7 @@ int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request, void *buf = NULL; int timeout; - if (snd_usb_pipe_sanity_check(dev, pipe)) + if (usb_pipe_type_check(dev, pipe)) return -EINVAL; if (size > 0) { diff --git a/sound/usb/helper.h b/sound/usb/helper.h index 5e8a18b4e7b9..f5b4c6647e4d 100644 --- a/sound/usb/helper.h +++ b/sound/usb/helper.h @@ -7,7 +7,6 @@ unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size); void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype); void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype); -int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe); int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request, __u8 requesttype, __u16 value, __u16 index, void *data, __u16 size); diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c index 0ffff7640892..9609c6d9655c 100644 --- a/sound/usb/mixer_scarlett_gen2.c +++ b/sound/usb/mixer_scarlett_gen2.c @@ -1978,7 +1978,7 @@ static int scarlett2_mixer_status_create(struct usb_mixer_interface *mixer) return 0; } - if (snd_usb_pipe_sanity_check(dev, pipe)) + if (usb_pipe_type_check(dev, pipe)) return -EINVAL; mixer->urb = usb_alloc_urb(0, GFP_KERNEL); diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index abf99b814a0f..fc3aab04a0bc 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -846,7 +846,7 @@ static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev) static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 }; void *buf; - if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x05))) + if (usb_pipe_type_check(dev, usb_sndintpipe(dev, 0x05))) return -EINVAL; buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL); if (!buf) @@ -875,7 +875,7 @@ static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev) { int ret; - if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0))) + if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0))) return -EINVAL; ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE, @@ -984,7 +984,7 @@ static int snd_usb_axefx3_boot_quirk(struct usb_device *dev) dev_dbg(&dev->dev, "Waiting for Axe-Fx III to boot up...\n"); - if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0))) + if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0))) return -EINVAL; /* If the Axe-Fx III has not fully booted, it will timeout when trying * to enable the audio streaming interface. A more generous timeout is @@ -1018,7 +1018,7 @@ static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf, { int err, actual_length; - if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x01))) + if (usb_pipe_type_check(dev, usb_sndintpipe(dev, 0x01))) return -EINVAL; err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x01), buf, *length, &actual_length, 1000); @@ -1030,7 +1030,7 @@ static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf, memset(buf, 0, buf_size); - if (snd_usb_pipe_sanity_check(dev, usb_rcvintpipe(dev, 0x82))) + if (usb_pipe_type_check(dev, usb_rcvintpipe(dev, 0x82))) return -EINVAL; err = usb_interrupt_msg(dev, usb_rcvintpipe(dev, 0x82), buf, buf_size, &actual_length, 1000); @@ -1117,7 +1117,7 @@ static int snd_usb_motu_m_series_boot_quirk(struct usb_device *dev) { int ret; - if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0))) + if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0))) return -EINVAL; ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 1, USB_TYPE_VENDOR | USB_RECIP_DEVICE,