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Date: Tue, 7 Jul 2015 10:45:32 +0200
From: Frans Klaver <fransklaver@...il.com>
To: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc: khalid@...ehiking.org, JBottomley@...n.com,
linux-scsi@...r.kernel.org,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] [SCSI] FlashPoint: optimize string comparison
On Tue, Jul 7, 2015 at 7:39 AM, Christophe JAILLET
<christophe.jaillet@...adoo.fr> wrote:
> Stop comparing the strings as soon as we know that they don't match.
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
> drivers/scsi/FlashPoint.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/scsi/FlashPoint.c b/drivers/scsi/FlashPoint.c
> index 5c74e4c..24a4d1a 100644
> --- a/drivers/scsi/FlashPoint.c
> +++ b/drivers/scsi/FlashPoint.c
> @@ -6280,8 +6280,10 @@ static unsigned char FPT_scmachid(unsigned char p_card,
> match = 1;
>
> for (k = 0; k < ID_STRING_LENGTH; k++) {
> - if (p_id_string[k] != FPT_scamInfo[i].id_string[k])
> + if (p_id_string[k] != FPT_scamInfo[i].id_string[k]) {
> match = 0;
> + break;
> + }
> }
>
> if (match) {
Why doesn't this use strncmp?
Thanks,
Frans
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