netdev - Re: [2/5][BNX2]: Add missing wait in bnx2_init_5709

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Message-ID: <20070604233940.GB31462@havoc.gtf.org>
Date:	Mon, 4 Jun 2007 19:39:40 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Michael Chan <mchan@...adcom.com>
Cc:	davem@...emloft.net, andy@...yhouse.net, netdev@...r.kernel.org
Subject: Re: [2/5][BNX2]: Add missing wait in bnx2_init_5709_context().

On Mon, Jun 04, 2007 at 05:00:35PM -0700, Michael Chan wrote:
> [BNX2]: Add missing wait in bnx2_init_5709_context().
> 
> For correctness, we need to wait for the MEM_INIT bit to be cleared
> in the BNX2_CTX_COMMAND register before proceeding.
> 
> Signed-off-by: Michael Chan <mchan@...adcom.com>
> 
> diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
> index 5d69e5b..daa62d9 100644
> --- a/drivers/net/bnx2.c
> +++ b/drivers/net/bnx2.c
> @@ -1778,6 +1778,12 @@ bnx2_init_5709_context(struct bnx2 *bp)
>  	val = BNX2_CTX_COMMAND_ENABLED | BNX2_CTX_COMMAND_MEM_INIT | (1 << 12);
>  	val |= (BCM_PAGE_BITS - 8) << 16;
>  	REG_WR(bp, BNX2_CTX_COMMAND, val);
> +	for (i = 0; i < 10; i++) {
> +		val = REG_RD(bp, BNX2_CTX_COMMAND);
> +		if (!(val & BNX2_CTX_COMMAND_MEM_INIT))
> +			break;
> +		udelay(2);
> +	}
>  	for (i = 0; i < bp->ctx_pages; i++) {
>  		int j;

If the bit does not clear after 10 loops, it seems to me you should
complain or somehow otherwise make note of the failure.

	Jeff



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