From patchwork Wed Oct 9 14:41:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivas Kandagatla X-Patchwork-Id: 11181327 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 8838B112B for ; Wed, 9 Oct 2019 14:41:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 68A6220B7C for ; Wed, 9 Oct 2019 14:41:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="S37KM856" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731586AbfJIOlv (ORCPT ); Wed, 9 Oct 2019 10:41:51 -0400 Received: from mail-wm1-f67.google.com ([209.85.128.67]:36335 "EHLO mail-wm1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731568AbfJIOlg (ORCPT ); Wed, 9 Oct 2019 10:41:36 -0400 Received: by mail-wm1-f67.google.com with SMTP id m18so2917286wmc.1 for ; Wed, 09 Oct 2019 07:41:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=x6OiJB7EuLtp7p4md9nfqD7cxFgmkO+0cPK10Zj1xY4=; b=S37KM856wHDnECg/1FKkIy1yjXEgnkQZyXIgt16MoukNlQDooW2oElREMEGO9tw42c AN0H2HND1RtIjiWZr5Fo+xtOP9xOk176a+hD22LrL5O9GSyT4botIELjYdWGET/4hcDF MSnQufVUYttCnPzEAqqOarb+lb97gnpLlsqgoN9KOEiH629AypzkAIhnbqv3tknO6SkK FRN+R9m1a/e1/sTZ2XFgbsuZdeP8lIROsVWrKCc9X5BLqc22aK4ZCiTbb0gi/H/ZCFF8 iUyxB5Om0WyMwD3xAeu98dsJPGZ06bln/EFt4pVLcPpPvIdRTLhK3woc13l4ShOYOBVW 1Klw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=x6OiJB7EuLtp7p4md9nfqD7cxFgmkO+0cPK10Zj1xY4=; b=FcTgRI+C3DLUTRmS25MNYGDDY9j8Phpkab7hULNR134eUrKjMwBp99zIE+4RKfPw+d eJoR2FGTPg4NeCQLVijmkjnuNRlsYekiXYhgJVriSd1kQuAGEKw7ohYHjg9O+ntiqBDa 5XVtp3EHMQTP7KSeIUZeHqaat5re/+tpj8+ey6DM5NftBN0LN4Woz4D9TaV3Th5iHqfa 4HQR7Lg7jc2b5lTPZ4Msl+2b8XUPrBX+7Iy3TWpa/07lm0iJiaBZGNYgOIAVNW0+5+Fq o+ZBTRAG+VHZjK3iSsFmwE+uezCKV6Ivq7OmJshIjPNA7g6LwQtUkC8+Lptgb3f6GhgA ejWQ== X-Gm-Message-State: APjAAAULjtdRNCeZHkPmFtDSydqFz9oCib9zwx0BaoBuUsP9VihwCQ9P vHZPiUWcPwcsnmBEqypq3yMW0g== X-Google-Smtp-Source: APXvYqzdoajYxUt+SlTTO0rYrQtFoWl/VHou2VgKvHy8Q2cy4h9n2LvSPVFWSoFcClx2YWzAtQ95gQ== X-Received: by 2002:a7b:ce89:: with SMTP id q9mr2928113wmj.2.1570632095145; Wed, 09 Oct 2019 07:41:35 -0700 (PDT) Received: from srini-hackbox.lan (cpc89974-aztw32-2-0-cust43.18-1.cable.virginm.net. [86.30.250.44]) by smtp.gmail.com with ESMTPSA id b7sm3031770wrx.56.2019.10.09.07.41.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Oct 2019 07:41:33 -0700 (PDT) From: Srinivas Kandagatla To: gregkh@linuxfoundation.org Cc: arnd@arndb.de, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Jorge Ramirez-Ortiz , Srinivas Kandagatla Subject: [PATCH v3 4/5] misc: fastrpc: handle interrupted contexts Date: Wed, 9 Oct 2019 15:41:22 +0100 Message-Id: <20191009144123.24583-5-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191009144123.24583-1-srinivas.kandagatla@linaro.org> References: <20191009144123.24583-1-srinivas.kandagatla@linaro.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Jorge Ramirez-Ortiz Buffers owned by a context that has been interrupted either by a signal or a timeout might still be being accessed by the DSP. delegate returning the associated memory to a later time when the device is released. Signed-off-by: Jorge Ramirez-Ortiz Reviewed-by: Srinivas Kandagatla Signed-off-by: Srinivas Kandagatla --- drivers/misc/fastrpc.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index 666c431380ce..eef2cdc00672 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -984,12 +984,13 @@ static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel, } bail: - /* We are done with this compute context, remove it from pending list */ - spin_lock(&fl->lock); - list_del(&ctx->node); - spin_unlock(&fl->lock); - fastrpc_context_put(ctx); - + if (err != -ERESTARTSYS && err != -ETIMEDOUT) { + /* We are done with this compute context */ + spin_lock(&fl->lock); + list_del(&ctx->node); + spin_unlock(&fl->lock); + fastrpc_context_put(ctx); + } if (err) dev_dbg(fl->sctx->dev, "Error: Invoke Failed %d\n", err);