linux-kernel - Re: [PATCH 10/21] [SCSI] nsp32: use mdelay instead of large udelay constants

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Message-ID: <CALZLnaFeLcaGM7_McTZ=pKBRnpXk0AvqOTF=1YCqJv-53yk4XQ@mail.gmail.com>
Date:	Thu, 25 Apr 2013 17:42:38 -0700
From:	Masanori Goto <gotom@...ori.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	YOKOTA Hiroshi <yokota@...lab.is.tsukuba.ac.jp>,
	"James E.J. Bottomley" <JBottomley@...allels.com>,
	linux-scsi@...r.kernel.org
Subject: Re: [PATCH 10/21] [SCSI] nsp32: use mdelay instead of large udelay constants

2013/4/25 Arnd Bergmann <arnd@...db.de>
>
> ARM cannot handle udelay for more than 2 miliseconds, so we
> should use mdelay instead for those.
>

Singed-off-by: GOTO Masanori <gotom@...ian.or.jp>

> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Cc: GOTO Masanori <gotom@...ian.or.jp>
> Cc: YOKOTA Hiroshi <yokota@...lab.is.tsukuba.ac.jp>
> Cc: "James E.J. Bottomley" <JBottomley@...allels.com>
> Cc: linux-scsi@...r.kernel.org
> ---
>  drivers/scsi/nsp32.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/scsi/nsp32.c b/drivers/scsi/nsp32.c
> index 1e3879d..0665f9c 100644
> --- a/drivers/scsi/nsp32.c
> +++ b/drivers/scsi/nsp32.c
> @@ -2899,7 +2899,7 @@ static void nsp32_do_bus_reset(nsp32_hw_data *data)
>          * reset SCSI bus
>          */
>         nsp32_write1(base, SCSI_BUS_CONTROL, BUSCTL_RST);
> -       udelay(RESET_HOLD_TIME);
> +       mdelay(RESET_HOLD_TIME / 1000);
>         nsp32_write1(base, SCSI_BUS_CONTROL, 0);
>         for(i = 0; i < 5; i++) {
>                 intrdat = nsp32_read2(base, IRQ_STATUS); /* dummy read */
> --
> 1.8.1.2
>
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