From patchwork Mon Apr 15 12:29:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricardo Ribalda X-Patchwork-Id: 789053 Received: from mail-ot1-f42.google.com (mail-ot1-f42.google.com [209.85.210.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8922B67A1A for ; Mon, 15 Apr 2024 12:29:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713184178; cv=none; b=E5VormV4XkAvnD8lLNvpa2FhSokU/45qMP9MBKGEonm85eb9jqlPesSDnAkkomg+6oAIpSGTMhWIXC1gOp7eL15PWIHp1vZAj0kR/6JcDXkCPCg1QEdeJZXKdjAfGoaoPX3wG1GiGNxC72ErPl4FXmy8DP6fyPULbeJlfo4VelY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713184178; c=relaxed/simple; bh=5lhRyrzca4TjFgF2+b3ZcdjsSA8YOHY7wePS8t1m6qg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=u45uh3M4vohuSXY/miYKI8AqpCO2xmhNX4SeAtE2HLnDdFTOIiPSaoCZYb6NpaCMMgYBh+n32DYKdAoG7R5X0Lry4lawf8KyUzbk4BgSqGf+lAC6qR6Eay7VsFrZjAOi/qfqJRde0yI9ljCdIqrchXLd/NVfSBrtmQxeTyoSDv0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=SnX9GWE4; arc=none smtp.client-ip=209.85.210.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="SnX9GWE4" Received: by mail-ot1-f42.google.com with SMTP id 46e09a7af769-6ea1f98f3b9so1527624a34.1 for ; Mon, 15 Apr 2024 05:29:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1713184175; x=1713788975; darn=vger.kernel.org; h=cc:to:message-id:content-transfer-encoding:mime-version:subject :date:from:from:to:cc:subject:date:message-id:reply-to; bh=BECndX+48cQN13aMuuHQd3FSCd8ubmNe5lelLwKHJ9Q=; b=SnX9GWE48rZPD9JjKU+6DXAN4GRLlBjQPhDPZQNq5T0KRT0B59zTtSWkAiJGBECKsY 9uMXxuRR2BHEFfNHI1eL94BwuHWTIS/UPLlCICFwmn53Z9vTIQZ7On/6TS4U3jLOYhst 8buVbGjBitBVcnaRM6if9ce7kbcMosEJU0R/E= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713184175; x=1713788975; h=cc:to:message-id:content-transfer-encoding:mime-version:subject :date:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=BECndX+48cQN13aMuuHQd3FSCd8ubmNe5lelLwKHJ9Q=; b=qgo3wiQR/RqimMdAwcK6kecA5giKKf1iB6+088GSycr8R+ulG1xmFcDPOXsYLImrGX x2RDYv18vHaD7BytXiRYdrPObseAbmF8C4Y7TEXYTePFBf+X3xPzFuJocuIwDPMUAJMd vLJd4h1VBBSmJeiDRMmarhhnlIiNS4mqaM+JTTMyfHPPydKM5ykvNMtfF8pV4itOHjIh FEDK6ibue9AKK/9I7nirVzrvCN9vpOU6Eyo4ZgMIU1DoadA3XCmAD7LWNNxVBx/oW+Jr p7k9axkW2HYUoUZSNV3O4x/WJyjPkApreRt16ydAfUUzdw6bnrw4uPUQcO+zJ3L45Rqg 36zw== X-Forwarded-Encrypted: i=1; AJvYcCWANZyoTV+Qmi3EqoegP2ic9lmGK7g0qRc+ZgYIOkv3sdGbG+rE28hQqtIn8RqRRFNoZGlCf9GXX2xlwQcXKKMQtjXgdIdYNjWPRWY= X-Gm-Message-State: AOJu0YweT2+FpGvtZDclCjQxacJ0HArJi38nDCCh2qitqgJeFkgDDYbM DMbQhiR/SH35mALABTPmgdSp6vLVJotPtHhVdQrxY03B0HNCd+FZAT1DeEo5a5q2hhy5q4Oo+Qe d4Q== X-Google-Smtp-Source: AGHT+IFnzlmu0VuyTMTpmtRA1ipPdRGFpT7uNoJdSzFeilp7/o7vx5AB3UWUyblkfMXQZpGZY0vYPA== X-Received: by 2002:a05:6871:3389:b0:21e:f03b:8836 with SMTP id ng9-20020a056871338900b0021ef03b8836mr10892530oac.52.1713184175612; Mon, 15 Apr 2024 05:29:35 -0700 (PDT) Received: from denia.c.googlers.com (114.152.245.35.bc.googleusercontent.com. [35.245.152.114]) by smtp.gmail.com with ESMTPSA id i22-20020a05620a145600b0078d68b23254sm6270244qkl.107.2024.04.15.05.29.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Apr 2024 05:29:35 -0700 (PDT) From: Ricardo Ribalda Date: Mon, 15 Apr 2024 12:29:34 +0000 Subject: [PATCH v3] media: usb: siano: Fix allocation of urbs Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240415-smatch-v3-1-ed3f23f9d5ee@chromium.org> X-B4-Tracking: v=1; b=H4sIAK0dHWYC/2WMyw6CMBBFf4XM2jF9MFBc+R/GBdJCu4CaFhsN4 d8tLIzR5bm55ywQTXAmwqlYIJjkovNTBnkooLPtNBh0OjMIJkpWcoZxbOfOouqFJE2sJqkhn+/ B9O65hy7XzNbF2YfX3k18W/8SiSPDWpFmrGkVidu5s8GP7jEefRhgqyTxbdLHFMixIsGpkZWWj fox13V9A2jvzBPZAAAA To: Mauro Carvalho Chehab , Yasunari Takiguchi , Jean-Christophe Trotin , Lars-Peter Clausen , Dmitry Torokhov Cc: Hans Verkuil , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, Ricardo Ribalda X-Mailer: b4 0.12.4 USB urbs must be allocated with usb_alloc_urb. Quoting the manual Only use this function (usb_init_urb) if you _really_ understand what you are doing. Fix the following smatch error: drivers/media/usb/siano/smsusb.c:53:38: warning: array of flexible structures Signed-off-by: Ricardo Ribalda --- Changes in v3: Thanks Hans - Remove unneeded NULL assignment - Use the proper variable :) - Link to v2: https://lore.kernel.org/r/20240415-smatch-v2-1-65215936d398@chromium.org Changes in v2: Thanks Hans - Only leave 1/6, the other ones are in another PR - Fix the return tag and NULLify the urbs on return - Link to v1: https://lore.kernel.org/r/20240410-smatch-v1-0-785d009a852b@chromium.org --- drivers/media/usb/siano/smsusb.c | 34 ++++++++++++++++++++++++---------- 1 file changed, 24 insertions(+), 10 deletions(-) --- base-commit: 34d7bf1c8e59f5fbf438ee32c96389ebe41ca2e8 change-id: 20240410-smatch-8f235d50753d Best regards, diff --git a/drivers/media/usb/siano/smsusb.c b/drivers/media/usb/siano/smsusb.c index 723510520d09..ba2c02e1070e 100644 --- a/drivers/media/usb/siano/smsusb.c +++ b/drivers/media/usb/siano/smsusb.c @@ -40,7 +40,7 @@ struct smsusb_urb_t { struct smscore_buffer_t *cb; struct smsusb_device_t *dev; - struct urb urb; + struct urb *urb; /* For the bottom half */ struct work_struct wq; @@ -160,7 +160,7 @@ static int smsusb_submit_urb(struct smsusb_device_t *dev, } usb_fill_bulk_urb( - &surb->urb, + surb->urb, dev->udev, usb_rcvbulkpipe(dev->udev, dev->in_ep), surb->cb->p, @@ -168,9 +168,9 @@ static int smsusb_submit_urb(struct smsusb_device_t *dev, smsusb_onresponse, surb ); - surb->urb.transfer_flags |= URB_FREE_BUFFER; + surb->urb->transfer_flags |= URB_FREE_BUFFER; - return usb_submit_urb(&surb->urb, GFP_ATOMIC); + return usb_submit_urb(surb->urb, GFP_ATOMIC); } static void smsusb_stop_streaming(struct smsusb_device_t *dev) @@ -178,7 +178,7 @@ static void smsusb_stop_streaming(struct smsusb_device_t *dev) int i; for (i = 0; i < MAX_URBS; i++) { - usb_kill_urb(&dev->surbs[i].urb); + usb_kill_urb(dev->surbs[i].urb); if (dev->surbs[i].wq.func) cancel_work_sync(&dev->surbs[i].wq); @@ -338,6 +338,8 @@ static void smsusb_term_device(struct usb_interface *intf) struct smsusb_device_t *dev = usb_get_intfdata(intf); if (dev) { + int i; + dev->state = SMSUSB_DISCONNECTED; smsusb_stop_streaming(dev); @@ -346,6 +348,9 @@ static void smsusb_term_device(struct usb_interface *intf) if (dev->coredev) smscore_unregister_device(dev->coredev); + for (i = 0; i < MAX_URBS; i++) + usb_free_urb(dev->surbs[i].urb); + pr_debug("device 0x%p destroyed\n", dev); kfree(dev); } @@ -390,6 +395,7 @@ static int smsusb_init_device(struct usb_interface *intf, int board_id) void *mdev; int i, rc; int align = 0; + int n_urb = 0; /* create device object */ dev = kzalloc(sizeof(struct smsusb_device_t), GFP_KERNEL); @@ -461,16 +467,18 @@ static int smsusb_init_device(struct usb_interface *intf, int board_id) dev->coredev->is_usb_device = true; /* initialize urbs */ - for (i = 0; i < MAX_URBS; i++) { - dev->surbs[i].dev = dev; - usb_init_urb(&dev->surbs[i].urb); + for (n_urb = 0; n_urb < MAX_URBS; n_urb++) { + dev->surbs[n_urb].dev = dev; + dev->surbs[n_urb].urb = usb_alloc_urb(0, GFP_KERNEL); + if (!dev->surbs[n_urb].urb) + goto free_urbs; } pr_debug("smsusb_start_streaming(...).\n"); rc = smsusb_start_streaming(dev); if (rc < 0) { pr_err("smsusb_start_streaming(...) failed\n"); - goto err_unregister_device; + goto free_urbs; } dev->state = SMSUSB_ACTIVE; @@ -478,13 +486,19 @@ static int smsusb_init_device(struct usb_interface *intf, int board_id) rc = smscore_start_device(dev->coredev); if (rc < 0) { pr_err("smscore_start_device(...) failed\n"); - goto err_unregister_device; + goto free_urbs; } pr_debug("device 0x%p created\n", dev); return rc; +free_urbs: + for (i = 0; i < n_urb; i++) { + usb_free_urb(dev->surbs[i].urb); + dev->surbs[i].urb = NULL; + } + err_unregister_device: smsusb_term_device(intf); #ifdef CONFIG_MEDIA_CONTROLLER_DVB