From patchwork Tue Mar 10 12:38:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 229438 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 D5579C18E5C for ; Tue, 10 Mar 2020 13:37:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA61D20675 for ; Tue, 10 Mar 2020 13:37:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583847435; bh=e6XfKFCo3E/geqxtJL5UjdGZZn5PajSr++jGszYg4WU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=mxkU797buqloN4Syvx4/Vla9TLj9I1XAj0rQ0WvLIhU7amCHYYHNfVwGJRBzyYAZa /8j1zuGUHTpuhthlmyKdglsOCSBEDeIB0Pmzi1LMCRM0ejLHmcnEbnszdwUKFiQCsx b+CxP3ggQ5e3lqV3VBS4rVz5vmSXtw05b+hVXLlY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726784AbgCJMlQ (ORCPT ); Tue, 10 Mar 2020 08:41:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:40536 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726776AbgCJMlP (ORCPT ); Tue, 10 Mar 2020 08:41:15 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 D54AD24695; Tue, 10 Mar 2020 12:41:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583844075; bh=e6XfKFCo3E/geqxtJL5UjdGZZn5PajSr++jGszYg4WU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=B1O8m6Tqf9w1P3iK6AT2Y0wbw3T4c9YBvW5JpApbCHYCf7SDqDFTdE6bbJRXaNeqR q1uEMreS39TL2vzelA0mI4Za8PPoJGKjHDj3oMpMxLooC8UgUlOdtLRKeIwdm4CG9i Z4YyXv7oRqu+iI1rraDGrUEsy+baPVxkQgtzmEQU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Johan Korsnes , Alan Stern , Armando Visconti , Jiri Kosina Subject: [PATCH 4.4 22/72] HID: core: increase HID report buffer size to 8KiB Date: Tue, 10 Mar 2020 13:38:35 +0100 Message-Id: <20200310123607.383998649@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200310123601.053680753@linuxfoundation.org> References: <20200310123601.053680753@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Johan Korsnes commit 84a4062632462c4320704fcdf8e99e89e94c0aba upstream. We have a HID touch device that reports its opens and shorts test results in HID buffers of size 8184 bytes. The maximum size of the HID buffer is currently set to 4096 bytes, causing probe of this device to fail. With this patch we increase the maximum size of the HID buffer to 8192 bytes, making device probe and acquisition of said buffers succeed. Signed-off-by: Johan Korsnes Cc: Alan Stern Cc: Armando Visconti Cc: Jiri Kosina Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman --- include/linux/hid.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -451,7 +451,7 @@ struct hid_report_enum { }; #define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */ -#define HID_MAX_BUFFER_SIZE 4096 /* 4kb */ +#define HID_MAX_BUFFER_SIZE 8192 /* 8kb */ #define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */ #define HID_OUTPUT_FIFO_SIZE 64