lkml.org 
[lkml]   [2014]   [Jan]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subject[PATCH] checkpatch: Prefer ether_addr_copy to memcpy(foo, bar, ETH_ALEN)
From
Date
ether_addr_copy was added for kernel version 3.14.
It's slightly smaller/faster for some arches.
Encourage its use.

Signed-off-by: Joe Perches <joe@perches.com>
---
scripts/checkpatch.pl | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index be53ba7..0ea2a1e 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -4096,6 +4096,16 @@ sub process {
}
}

+# Check for memcpy(foo, bar, ETH_ALEN) that could be ether_addr_copy(foo, bar)
+ if ($^V && $^V ge 5.10.0 &&
+ $line =~ /^\+(?:.*?)\bmemcpy\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/s) {
+ if (WARN("PREFER_ETHER_ADDR_COPY",
+ "Prefer ether_addr_copy() over memcpy() if the Ethernet addresses are __aligned(2)\n" . $herecurr) &&
+ $fix) {
+ $fixed[$linenr - 1] =~ s/\bmemcpy\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/ether_addr_copy($2, $7)/;
+ }
+ }
+
# typecasts on min/max could be min_t/max_t
if ($^V && $^V ge 5.10.0 &&
defined $stat &&



\
 
 \ /
  Last update: 2014-01-22 00:41    [W:0.097 / U:1.496 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site