From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:39507 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751822AbbJQVe5 (ORCPT ); Sat, 17 Oct 2015 17:34:57 -0400 Subject: Patch "regmap: debugfs: Don't bother actually printing when calculating max length" has been added to the 3.10-stable tree To: broonie@kernel.org, gregkh@linuxfoundation.org, linux@rasmusvillemoes.dk Cc: , From: Date: Sat, 17 Oct 2015 14:34:56 -0700 Message-ID: <144511769618444@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled regmap: debugfs: Don't bother actually printing when calculating max length to the 3.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: regmap-debugfs-don-t-bother-actually-printing-when-calculating-max-length.patch and it can be found in the queue-3.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 176fc2d5770a0990eebff903ba680d2edd32e718 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 19 Sep 2015 07:12:34 -0700 Subject: regmap: debugfs: Don't bother actually printing when calculating max length From: Mark Brown commit 176fc2d5770a0990eebff903ba680d2edd32e718 upstream. The in kernel snprintf() will conveniently return the actual length of the printed string even if not given an output beffer at all so just do that rather than relying on the user to pass in a suitable buffer, ensuring that we don't need to worry if the buffer was truncated due to the size of the buffer passed in. Reported-by: Rasmus Villemoes Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- drivers/base/regmap/regmap-debugfs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -23,8 +23,7 @@ static struct dentry *regmap_debugfs_roo /* Calculate the length of a fixed format */ static size_t regmap_calc_reg_len(int max_val, char *buf, size_t buf_size) { - snprintf(buf, buf_size, "%x", max_val); - return strlen(buf); + return snprintf(NULL, 0, "%x", max_val); } static ssize_t regmap_name_read_file(struct file *file, Patches currently in stable-queue which might be from broonie@kernel.org are queue-3.10/regmap-debugfs-ensure-we-don-t-underflow-when-printing-access-masks.patch queue-3.10/spi-fix-documentation-of-spi_alloc_master.patch queue-3.10/asoc-fix-broken-pxa-soc-support.patch queue-3.10/asoc-dwc-correct-irq-clear-method.patch queue-3.10/regmap-debugfs-don-t-bother-actually-printing-when-calculating-max-length.patch queue-3.10/spi-spi-pxa2xx-check-status-register-to-determine-if-sssr_tint-is-disabled.patch