* [PATCH v4 1/8] dma: debug: Replace strncmp with str_has_prefix
@ 2019-08-09 7:10 Chuhong Yuan
0 siblings, 0 replies; only message in thread
From: Chuhong Yuan @ 2019-08-09 7:10 UTC (permalink / raw)
Cc: Chuhong Yuan, linux-kernel, iommu, Robin Murphy, Christoph Hellwig
strncmp(str, const, len) is error-prone because len
is easy to have typo.
The example is the hard-coded len has counting error
or sizeof(const) forgets - 1.
So we prefer using newly introduced str_has_prefix()
to substitute such strncmp to make code better.
Signed-off-by: Chuhong Yuan <hslester96@gmail.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
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2019-08-09 7:10 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-08-09 7:10 [PATCH v4 1/8] dma: debug: Replace strncmp with str_has_prefix Chuhong Yuan
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).