From patchwork Thu May 20 09:16:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 444552 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 88E14C433B4 for ; Thu, 20 May 2021 09:38:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6D5D061404 for ; Thu, 20 May 2021 09:38:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232923AbhETJkQ (ORCPT ); Thu, 20 May 2021 05:40:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:41218 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233230AbhETJil (ORCPT ); Thu, 20 May 2021 05:38:41 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 83E3A613CE; Thu, 20 May 2021 09:30:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621503047; bh=KkJLWJR/icDzq06kTCIfwSPB4B9uo9pQ4NbCczthCE0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YzhdnZA0MtWfwQwIjlpLWHCPfiZ1Q+av7DmuyhffFfZNBRjFEI/E/LB+slA6dh7Xi WF2GGC5vTEOk+TZU8E4ZKDMwD0vBYYgdv24jVXW1Pf4EBGFRa2q1ODCEEv2SyF0LQI /bBvfHuVNV7z1Q8A8n8qv9VuDuKBgLktS+gjM7rk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sean Young , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 4.19 045/425] media: ite-cir: check for receive overflow Date: Thu, 20 May 2021 11:16:54 +0200 Message-Id: <20210520092132.904503655@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210520092131.308959589@linuxfoundation.org> References: <20210520092131.308959589@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sean Young [ Upstream commit 28c7afb07ccfc0a939bb06ac1e7afe669901c65a ] It's best if this condition is reported. Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/rc/ite-cir.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/media/rc/ite-cir.c b/drivers/media/rc/ite-cir.c index de77d22c30a7..18f3718315a8 100644 --- a/drivers/media/rc/ite-cir.c +++ b/drivers/media/rc/ite-cir.c @@ -285,8 +285,14 @@ static irqreturn_t ite_cir_isr(int irq, void *data) /* read the interrupt flags */ iflags = dev->params.get_irq_causes(dev); + /* Check for RX overflow */ + if (iflags & ITE_IRQ_RX_FIFO_OVERRUN) { + dev_warn(&dev->rdev->dev, "receive overflow\n"); + ir_raw_event_reset(dev->rdev); + } + /* check for the receive interrupt */ - if (iflags & (ITE_IRQ_RX_FIFO | ITE_IRQ_RX_FIFO_OVERRUN)) { + if (iflags & ITE_IRQ_RX_FIFO) { /* read the FIFO bytes */ rx_bytes = dev->params.get_rx_bytes(dev, rx_buf,