From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933327AbcBIWsm (ORCPT ); Tue, 9 Feb 2016 17:48:42 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:40930 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964849AbcBIWqF (ORCPT ); Tue, 9 Feb 2016 17:46:05 -0500 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Samuel Thibault , Greg Kroah-Hartman , Kamal Mostafa Subject: [PATCH 3.19.y-ckt 37/47] Staging: speakup: Fix getting port information Date: Tue, 9 Feb 2016 14:44:51 -0800 Message-Id: <1455057901-7468-38-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1455057901-7468-1-git-send-email-kamal@canonical.com> References: <1455057901-7468-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 3.19 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.19.8-ckt15 -stable review patch. If anyone has any objections, please let me know. ---8<------------------------------------------------------------ From: Samuel Thibault commit 327b882d3bcc1fba82dbd39b5cf5a838c81218e2 upstream. Commit f79b0d9c223c ("staging: speakup: Fixed warning instead of ") broke the port information in the speakup driver: SERIAL_PORT_DFNS only gets defined if asm/serial.h is included, and no other header includes asm/serial.h. We here make sure serialio.c does get the arch-specific definition of SERIAL_PORT_DFNS from asm/serial.h, if any. Along the way, this makes sure that we do have information for the requested serial port number (index) Fixes: f79b0d9c223c ("staging: speakup: Fixed warning instead of ") Signed-off-by: Samuel Thibault Signed-off-by: Greg Kroah-Hartman Signed-off-by: Kamal Mostafa --- drivers/staging/speakup/serialio.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/staging/speakup/serialio.c b/drivers/staging/speakup/serialio.c index 1d9d51b..f41a7da 100644 --- a/drivers/staging/speakup/serialio.c +++ b/drivers/staging/speakup/serialio.c @@ -6,6 +6,11 @@ #include "spk_priv.h" #include "serialio.h" +#include +/* WARNING: Do not change this to without testing that + * SERIAL_PORT_DFNS does get defined to the appropriate value. */ +#include + #ifndef SERIAL_PORT_DFNS #define SERIAL_PORT_DFNS #endif @@ -23,9 +28,15 @@ const struct old_serial_port *spk_serial_init(int index) int baud = 9600, quot = 0; unsigned int cval = 0; int cflag = CREAD | HUPCL | CLOCAL | B9600 | CS8; - const struct old_serial_port *ser = rs_table + index; + const struct old_serial_port *ser; int err; + if (index >= ARRAY_SIZE(rs_table)) { + pr_info("no port info for ttyS%d\n", index); + return NULL; + } + ser = rs_table + index; + /* Divisor, bytesize and parity */ quot = ser->baud_base / baud; cval = cflag & (CSIZE | CSTOPB); -- 1.9.1