Hi QiaoChong,
On Tue, Jan 22, 2019 at 3:04 PM qiaochong <qiaoch...@loongson.cn> wrote:
>
> From: QiaoChong <qiaoch...@loongson.cn>
>
> git blame drivers/parport/parport_pc.c
>
> 181bf1e815a2a (Alan Cox 2009-06-11 13:08:10 +0100 1376)
> static struct superio_struct *find_superio(struct parport *p)
> ^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 1377) {
> 181bf1e815a2a (Alan Cox 2009-06-11 13:08:10 +0100 1378)
> int i;
> 181bf1e815a2a (Alan Cox 2009-06-11 13:08:10 +0100 1379)
> for (i = 0; i < NR_SUPERIOS; i++)
> 181bf1e815a2a (Alan Cox 2009-06-11 13:08:10 +0100 1380)
> if (superios[i].io != p->base)
> 181bf1e815a2a (Alan Cox 2009-06-11 13:08:10 +0100 1381)
> return &superios[i];
> 181bf1e815a2a (Alan Cox 2009-06-11 13:08:10 +0100 1382)
> return NULL;
> 181bf1e815a2a (Alan Cox 2009-06-11 13:08:10 +0100 1383) }
> 73e0d48b8c28f (Michael Buesch 2009-06-11 13:06:31 +0100 1384)
>
> git log -1 -p 181bf1e815a2a
>
> -static int get_superio_dma(struct parport *p)
> +static struct superio_struct *find_superio(struct parport *p)
> {
> - int i = 0;
> + int i;
> + for (i = 0; i < NR_SUPERIOS; i++)
> + if (superios[i].io != p->base)
> + return &superios[i];
> + return NULL;
> +}
>
> - while ((i < NR_SUPERIOS) && (superios[i].io != p->base))
> - i++;
> - if (i != NR_SUPERIOS)
> - return superios[i].dma;
>
> the code before 181bf1e815a2a also mean superio[i].io == p->base, fixup it.
So, this means the Super-IO chips irq and dma has not worked since 2009. :(
Can you please resend this with a proper commit message..
--
Regards
Sudip
