linux-kernel - [PATCH 03/12] dma-debug: Replace strncmp with str_has

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Message-Id: <20190729151416.9388-1-hslester96@gmail.com>
Date:   Mon, 29 Jul 2019 23:14:16 +0800
From:   Chuhong Yuan <hslester96@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Chuhong Yuan <hslester96@...il.com>
Subject: [PATCH 03/12] dma-debug: Replace strncmp with str_has_prefix

strncmp(str, const, len) is error-prone.
We had better use newly introduced
str_has_prefix() instead of it.

Signed-off-by: Chuhong Yuan <hslester96@...il.com>
---
 kernel/dma/debug.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c
index 099002d84f46..0f9e1aba3e1a 100644
--- a/kernel/dma/debug.c
+++ b/kernel/dma/debug.c
@@ -970,7 +970,7 @@ static __init int dma_debug_cmdline(char *str)
 	if (!str)
 		return -EINVAL;
 
-	if (strncmp(str, "off", 3) == 0) {
+	if (str_has_prefix(str, "off")) {
 		pr_info("debugging disabled on kernel command line\n");
 		global_disable = true;
 	}
-- 
2.20.1