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Ip=[137.71.25.57]; Helo=[nwd2mta2.analog.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN3PR03MB2260 X-Mailman-Approved-At: Thu, 09 May 2019 07:18:00 +0000 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=analog.onmicrosoft.com; s=selector1-analog-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=ej4TvjRJPb880Evlka3jGsq9toPstBngds/H7MSz+98=; b=h9DQ+GRsCQDxKqwstM007EbLcpBHqWjQ2MRqXq5cju0OtcgE40K257CUdmKTcLmNiFsVQ8TTUi5HLpjaCc0tXSIxEMkemV6E3tWUguwanL7bPvyn1MHBba2gc+TzvtAMCzfuHmsH9w9p/tFocvXacJIH4a0VqaLEN/p5NINwGK0= X-Mailman-Original-Authentication-Results: spf=pass (sender IP is 137.71.25.57) smtp.mailfrom=analog.com; lists.freedesktop.org; dkim=none (message not signed) header.d=none;lists.freedesktop.org; dmarc=bestguesspass action=none header.from=analog.com; X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gregkh@linuxfoundation.org, Alexandru Ardelean , andriy.shevchenko@linux.intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP The documentation the `_match_string()` helper mentions that `n` (size of the given array) should be: * @n: number of strings in the array or -1 for NULL terminated arrays The behavior of the function is different, in the sense that it exits on the first NULL element in the array, regardless of whether `n` is -1 or a positive number. This patch changes the behavior, to exit the loop when a NULL element is found and n == -1. Essentially, this aligns the behavior with the doc-string. There are currently many users of `match_string()`, and so, in order to go through them, the next patches in the series will focus on doing some cosmetic changes, which are aimed at grouping the users of `match_string()`. Signed-off-by: Alexandru Ardelean --- lib/string.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/lib/string.c b/lib/string.c index 3ab861c1a857..76edb7bf76cb 100644 --- a/lib/string.c +++ b/lib/string.c @@ -648,8 +648,11 @@ int match_string(const char * const *array, size_t n, const char *string) for (index = 0; index < n; index++) { item = array[index]; - if (!item) + if (!item) { + if (n != (size_t)-1) + continue; break; + } if (!strcmp(item, string)) return index; }