netdev - Re: [PATCH net 1/5] bnx2x: limit number of interrupt vectors for 57711

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Message-ID: <52CAB3F6.2060901@cogentembedded.com>
Date:	Mon, 06 Jan 2014 17:47:34 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Yuval Mintz <yuvalmin@...adcom.com>, davem@...emloft.net,
	netdev@...r.kernel.org, Dmitry Kravkov <dmitry@...adcom.com>
CC:	ariele@...adcom.com
Subject: Re: [PATCH net 1/5] bnx2x: limit number of interrupt vectors for
 57711

Hello.

On 05-01-2014 20:33, Yuval Mintz wrote:

> From: Dmitry Kravkov <dmitry@...adcom.com>

> Original straightforward division may lead to zeroing number of SB and
> null-pointer dereference when device is short of MSIX vectors or lacks
> MSIX capabilities.

> Reported-by: Vladislav Zolotarov <vladz@...udius-systems.com>
> Signed-off-by: Dmitry Kravkov <dmitry@...adcom.com>
> Signed-off-by: Yuval Mintz <yuvalmin@...adcom.com>
> Signed-off-by: Ariel Elior <ariele@...adcom.com>
> ---
>   drivers/net/ethernet/broadcom/bnx2x/bnx2x.h      | 2 ++
>   drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 6 +++---
>   2 files changed, 5 insertions(+), 3 deletions(-)

> diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
> index a1f66e2..cb30d1a 100644
> --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
> +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
> @@ -2499,4 +2499,6 @@ void bnx2x_set_local_cmng(struct bnx2x *bp);
>   #define MCPR_SCRATCH_BASE(bp) \
>   	(CHIP_IS_E1x(bp) ? MCP_REG_MCPR_SCRATCH : MCP_A_REG_MCPR_SCRATCH)
>
> +#define E1H_MAX_MF_SB_COUNT (HC_SB_MAX_SB_E1X/(E1HVN_MAX * PORT_MAX))

    Be consistent and put spaces around / too, please.

WBR, Sergei

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