Re: [PATCH] openpromfs: Adjust three seq_printf() calls in property_show()

From: Joe Perches
Date: Tue Jul 02 2019 - 12:08:10 EST


On Tue, 2019-07-02 at 17:40 +0200, Markus Elfring wrote:
> From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> Date: Tue, 2 Jul 2019 17:24:27 +0200
>
> A bit of information should be put into a sequence.
> Thus improve the execution speed for this data output by better usage
> of corresponding functions.
>
> This issue was detected by using the Coccinelle software.

(wasn't Markus perma-banned?)

> diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c
[]
> @@ -76,14 +76,14 @@ static int property_show(struct seq_file *f, void *v)
> while (len > 0) {
> int n = strlen(pval);
>
> - seq_printf(f, "%s", (char *) pval);
> + seq_puts(f, (char *) pval);
>
> /* Skip over the NULL byte too. */
> pval += n + 1;
> len -= n + 1;
>
> if (len > 0)
> - seq_printf(f, " + ");
> + seq_puts(f, " + ");
> }
> } else {
> if (len & 3) {
> @@ -111,8 +111,7 @@ static int property_show(struct seq_file *f, void *v)
> }
> }
> }
> - seq_printf(f, "\n");
> -
> + seq_putc(f, '\n');
> return 0;
> }

If this is really useful (and it's really not),
at least change void *pval to char *pval and
remove a bunch of useless casts.