From mboxrd@z Thu Jan 1 00:00:00 1970 From: Azael Avalos Subject: [PATCH v2 5/5] toshiba_acpi: Change touchpad store to check for invalid values Date: Wed, 10 Sep 2014 21:01:57 -0600 Message-ID: <1410404517-4209-2-git-send-email-coproscefalo@gmail.com> References: <1410404517-4209-1-git-send-email-coproscefalo@gmail.com> Return-path: Received: from mail-oi0-f54.google.com ([209.85.218.54]:55854 "EHLO mail-oi0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751803AbaIKDCH (ORCPT ); Wed, 10 Sep 2014 23:02:07 -0400 In-Reply-To: <1410404517-4209-1-git-send-email-coproscefalo@gmail.com> Sender: platform-driver-x86-owner@vger.kernel.org List-ID: To: Matthew Garrett , Darren Hart , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Azael Avalos The function toshiba_touchpad_store is not checking for invalid values and simply returns silently. This patch checks for invalid values and returns accordingly. Signed-off-by: Azael Avalos --- drivers/platform/x86/toshiba_acpi.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index 08147c5..5a2324d 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -1429,12 +1429,18 @@ static ssize_t toshiba_touchpad_store(struct device *dev, { struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev); int state; + int ret; /* Set the TouchPad on/off, 0 - Disable | 1 - Enable */ - if (sscanf(buf, "%i", &state) == 1 && (state == 0 || state == 1)) { - if (toshiba_touchpad_set(toshiba, state) < 0) - return -EIO; - } + ret = kstrtoint(buf, 0, &state); + if (ret) + return ret; + if (state != 0 && state != 1) + return -EINVAL; + + ret = toshiba_touchpad_set(toshiba, state); + if (ret) + return ret; return count; } -- 2.0.0