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scsi: aic94xx: Fix fall-through warning for Clang

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In preparation to enable -Wimplicit-fallthrough for Clang, fix a
warning by explicitly adding a fallthrough; statement.

Notice that this seems to be a Duff device for performance[1]. So,
although the code looks a bit _funny_, I didn't want to refactor
or modify it beyond merely adding a fallthrough marking, which
might be the least disruptive way to fix this issue.

[1] https://www.drdobbs.com/a-reusable-duff-device/184406208

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2021-06-30 19:03:40 -05:00
parent ba3fea5472
commit 4e1c8c17ff
1 changed files with 3 additions and 1 deletions
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4
drivers/scsi/aic94xx/aic94xx_sds.c
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@ -718,10 +718,12 @@ static void *asd_find_ll_by_id(void * const start, const u8 id0, const u8 id1)
do {
switch (id1) {
default:
if (el->id1 == id1)
if (el->id1 == id1) {
fallthrough;
case 0xFF:
if (el->id0 == id0)
return el;
}
}
el = start + le16_to_cpu(el->next);
} while (el != start);