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util/lint/checkpatch.pl: Use 'allocFunctions' 

This reduce difference with linux v5.18.

Change-Id: I1fc71b9cb6a4e4f8b27fbe6d45f4fa4e2c236157
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64603
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@tutanota.com>
This commit is contained in:
Elyes Haouas 2022-05-23 18:33:15 +02:00 committed by Martin L Roth
parent 64c04e0da9
commit a7b0d38964
1 changed files with 14 additions and 3 deletions
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17
util/lint/checkpatch.pl
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@ -601,6 +601,16 @@ our $logFunctions = qr{(?x:
seq_vprintf|seq_printf|seq_puts
)};
our $allocFunctions = qr{(?x:
(?:(?:devm_)?
(?:kv|k|v)[czm]alloc(?:_array)?(?:_node)? |
kstrdup(?:_const)? |
kmemdup(?:_nul)?) |
(?:\w+)?alloc_skb(?:_ip_align)? |
# dev_alloc_skb/netdev_alloc_skb, et al
dma_alloc_coherent
)};
our $signature_tags = qr{(?xi:
Signed-off-by:|
Acked-by:|
@ -5774,7 +5784,8 @@ sub process {
my ($s, $c) = ctx_statement_block($linenr - 3, $realcnt, 0);
# print("line: <$line>\nprevline: <$prevline>\ns: <$s>\nc: <$c>\n\n\n");
if ($s =~ /(?:^|\n)[ \+]\s*(?:$Type\s*)?\Q$testval\E\s*=\s*(?:\([^\)]*\)\s*)?\s*(?:devm_)?(?:[kv][czm]alloc(?:_node|_array)?\b|kstrdup|kmemdup|(?:dev_)?alloc_skb)/) {
if ($s =~ /(?:^|\n)[ \+]\s*(?:$Type\s*)?\Q$testval\E\s*=\s*(?:\([^\)]*\)\s*)?\s*$allocFunctions\s*\(/ &&
$s !~ /\b__GFP_NOWARN\b/ ) {
WARN("OOM_MESSAGE",
"Possible unnecessary 'out of memory' message\n" . $hereprev);
}
@ -6431,8 +6442,8 @@ sub process {
}
}
# check for pointless casting of kmalloc return
if ($line =~ /\*\s*\)\s*[kv][czm]alloc(_node){0,1}\b/) {
# check for pointless casting of alloc functions
if ($line =~ /\*\s*\)\s*$allocFunctions\b/) {
WARN("UNNECESSARY_CASTS",
"unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
}