From patchwork Thu Jun 28 23:49:28 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Karim Eshapa X-Patchwork-Id: 10495363 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 583DB6022E for ; Thu, 28 Jun 2018 23:49:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 36EF529F08 for ; Thu, 28 Jun 2018 23:49:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2AD0329F0C; Thu, 28 Jun 2018 23:49:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C632729F08 for ; Thu, 28 Jun 2018 23:49:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936280AbeF1Xtk (ORCPT ); Thu, 28 Jun 2018 19:49:40 -0400 Received: from mail-wr0-f194.google.com ([209.85.128.194]:33060 "EHLO mail-wr0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935342AbeF1Xtk (ORCPT ); Thu, 28 Jun 2018 19:49:40 -0400 Received: by mail-wr0-f194.google.com with SMTP id k7-v6so3601366wrq.0; Thu, 28 Jun 2018 16:49:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=jJ0HvTuii/tj87M4Greg6e4RuT0tIJ3zCHzr8ED8vI8=; b=gxOAYW97Y7ahv9sWDXQbUZw5eqMUHTHPA5OwJM9ZMtbYXBHKk0MOo+LIHr6NCovYQI EtAOp9LxdhE6/fNTPz6A0uWY3R1+6HGYESfZxRgq1krWtGwH7s8Z1avcBstKyrrHcUdK r8RwEcdFgJVo89iW9m8zeC/CBKtum/n4eAMXD4ir1PuNSX/foAKFpC0X9+Vfbnm/H5pt HZczpYxlTserATpAFMCIDMpHVd4Ciec9djo9ZQu/XWjXlA38mRgvwjtluCNMenRP8Jx6 BL+AtYlZrAEt2kj2KACj/dmEGxziYIaeM9ycU5XEu/noiFIoSKR6okg+u4544JSySDl9 m0fQ== 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; bh=jJ0HvTuii/tj87M4Greg6e4RuT0tIJ3zCHzr8ED8vI8=; b=br7KBP/qQ2rqoiAtp5xzoz+hS28L4pISkm5PgHyFQBZvBWmnnE+O/42XiAEMCTtXOU 10MYHmwpMOx479yFjLU2g9nvKaJ/ykulXgGe3dXLcS8OrFkB8jMoOsxNbd9yX50/MaVK IunyiGm/IADdLtVKxG8kb3QeZqqEdv6X8g2lYc6GXJMZwaZIZwsagnBzTaTh2Axmtax6 HaTQA/lyzDaKBZ3dxs0i8+ILTHWYNaBKrhVe9hri9uly4xPznoPg+iTmlVREwjIYzoDE yfztH3mjvK2//on0NSus8nm35rkRkRSDb1BUtTNn+4VcDT9JRxaTkodB+NAyA2qEXSHF NRAQ== X-Gm-Message-State: APt69E3K4vF8iim8o4B2KYrn5xgsrHm4Whl46AMJez4KO/0gQmJYbut6 cfYfRONKJ+dRT7qJ2CjZyXo= X-Google-Smtp-Source: AAOMgpfXhAHMKkdfqCiCDCTZm0pmWbox394q/V3kuEdMr8jEmJSo3ts+oW6FqJ0XKowg4kB4654C+g== X-Received: by 2002:a5d:4b0a:: with SMTP id v10-v6mr4396167wrq.87.1530229778661; Thu, 28 Jun 2018 16:49:38 -0700 (PDT) Received: from localhost.localdomain ([156.219.234.99]) by smtp.gmail.com with ESMTPSA id t124-v6sm78214wmt.29.2018.06.28.16.49.32 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 28 Jun 2018 16:49:37 -0700 (PDT) From: Karim Eshapa To: lars@metafoo.de Cc: Michael.Hennerich@analog.com, jic23@kernel.org, knaack.h@gmx.de, pmeerw@pmeerw.net, gregkh@linuxfoundation.org, linux-iio@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Karim Eshapa Subject: [PATCH 4/4] staging:iio:adc:ad7280a: Use GFP_ATOMIC in interrupt handler Date: Fri, 29 Jun 2018 01:49:28 +0200 Message-Id: <20180628234928.4205-1-karim.eshapa@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Use GFP_ATOMIC rather GFP_KERNEL in interrupt handler, as GFP_KERNEL may sleep according to slab allocator. Signed-off-by: Karim Eshapa --- drivers/staging/iio/adc/ad7280a.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c index b736275c10f5..25c4fbc303f7 100644 --- a/drivers/staging/iio/adc/ad7280a.c +++ b/drivers/staging/iio/adc/ad7280a.c @@ -692,7 +692,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private) unsigned int *channels; int i, ret; - channels = kcalloc(st->scan_cnt, sizeof(*channels), GFP_KERNEL); + channels = kcalloc(st->scan_cnt, sizeof(*channels), GFP_ATOMIC); if (!channels) return IRQ_HANDLED;